Category Air Warfare

Really the End of Stealth?

This blog reported in July that the end of stealth might be near.  Further evidence comes with Aviation Week’s interview with Fred Kennedy, the lead of the Tactical Technology Office (TTO) at the Defense Advanced Research Projects Agency (DARPA) reveals key elements of the debates within the US defense community, specifically about stealth.

“We have been doubling down on the miracle of stealth for forty years. … There are diminishing returns to using the same tactic.  I don’t think there is a lot of advantage to going further into this particular tactic of stealth.”  Rather, DARPA suggests what they call “un-deterable air presence. … You’re going to see me coming, since I won’t be stealthy, and you’re going to shoot at me, but you’re not going to hit anything.  An example is hypersonics.”

Meanwhile, Air Force Chief of Staff General Dave Goldfein is looking at the network approach, sometimes called combat cloud.  ”When you look at — through the lens of the network — and you look at air superiority as a mission, as a family-of-systems approach, you can see why you don’t hear me talking a lot about a replacement, A for B.”

This indicates that several programs which are underway to consider building new stealth aircraft might be facing an uphill battle to convince the Air Force, DARPA and Department of Defense (DoD):

  • Next Generation Air Dominance (NGAD)
  • Penetrating Counter Air (PCA)
  • F/A-XX

So, does this mean that stealth is near its end? A few key facts illustrate otherwise:

  1. Significant investment in new stealthy platforms, worldwide.
    1. US F-117 – in service from 1983 to 2008
    2. US B-2 – in service since 1997
    3. US F-22 – in service 2005-Dec, first combat 2014-Sep
    4. F-35 Programfirst combat by Israeli Air Force, 2018-May
    5. US B-21 Program – expected to enter service by 2025
    6. British Tempest – concept announced 2018-July
    7. Franco-German Future Combat Air System (FCAS)
    8. Japanese X-2 Shinshincostly, but may proceed with partners
    9. Korean & Indonesian KF-X – expected by 2032
    10. Turkish & British TF-X – first flight by 2023 ?
    11. Chinese J-20 – in serial production since 2017-Oct
    12. Chinese J-31 – improved version, first flight 2016-Dec
    13. Chinese H-20 – strategic stealth bomber, planned for 2025
    14. Russian Su-57 – in service, combat evaluation in Syria
    15. Russian PAK DA Program – bomber planned for 2025-2030
  2. Research projects by DARPA that leverage existing stealthy platforms.
    1. Gremlins – semi-disposable, air launch and recovery UAVs
    2. Software – System of Systems approach (SoSITE)
  3. Evidence that stealth capabilities by potential adversaries are overstated.
    1. India Air Force claims Su-30MKI tracked Chinese J-20
    2. Russia cancels mass production of Su-57

Clearly then, stealth is a capability that is here to stay, and many new aircraft with incorporate it into their design. The point that DARPA’s Kennedy makes is that potential adversaries know this tactic, and they are investing in ways to counter it.  Stealth is no longer a source of technological surprise, it is mainstream.  It was original and likely the source of significant surprise in 1983!

Drones: The People’s Weapon?

The DJI Matrice 600 commercial drone for professional aerial photography. Available for $4,600, a pair of these drones were allegedly used in an assassination attempt on Venezuelan President Nicolás Maduro in August 2018. [Wired]

Last week, the Russian Ministry of Defense claimed that its military air defense assets had shot down 45 drones in attempted attacks on Khmeimim Air Base, the main Russian military installation in Syria. The frequency of these attacks were increasing since the first one in January, according to Major General Igor Konashenkov. Five drones had been downed in the three days preceding the news conference.

Konashenkov asserted that although the drones appeared technologically primitive, they were actually quite sophisticated, with a range of up to 100 kilometers (60 miles). While the drones were purportedly to be piloted by Syrian rebels from Idlib Provence, the Russians have implied that they required outside assistance to assemble them.

The use of commercial off-the shelf (COTS) or modified off-the-shelf (MOTS) aerial drones by non-state actors for actions ranging from precision bombing attacks on combat troops, to terrorism, to surveillance of law enforcement, appears to be gaining in popularity.

Earlier this month, a pair of commercial drones armed with explosives were used in an alleged assassination attempt on Venezuelan President Nicolás Maduro. Daesh fighters in Syria and Iraq have been using drones for reconnaissance and to drop explosives and bombs on opposition forces.

According to Kathy Gilsinan in The Atlantic,

In 2015, Reuters reported that a protester flew “a drone carrying radioactive sand from the Fukushima nuclear disaster onto the prime minister’s office, though the amount of radiation was minimal.” Mexican cartels have used drones to smuggle drugs and, in one instance, to land disabled grenades on a local police chief’s property. Last summer, a drone delivered an active grenade to an ammunition dump in Ukraine, which Kyle Mizokami of Popular Mechanics reported caused a billion dollars’ worth of damage.

Patrick Turner reported for Defense One that a criminal gang employed drones to harass an FBI hostage rescue team observing an unfolding situation outside a large U.S. city in 2017.

The U.S. Defense Department has been aware for some time of the potential effectiveness of drones, particularly the specter of massed drone “swarm” attacks. In turn, the national security community and the defense industry have turned their attention to potential countermeasures.

As Joseph Trevithick reported in The Drive, the Russians have been successful thus far in thwarting drone attacks in Syria using air defense radars, Pantsir-S1 short-range air defense systems, and electronic warfare systems. These attacks have not involved more than a handful of drones at a time, however. The initial Syrian rebel drone attack on Khmeimim Air Base in January 2018 involved 10 drones carrying 10 bomblets each.

The ubiquity of commercial drones also raises the possibility of attacks on non-military targets unprotected by air defense networks. Is it possible to defend every potential target? Perhaps not, but Jospeh Hanacek points out in War on the Rocks that there are ways to counter or mitigate the risk of drone attacks that do not involve sophisticated and expensive defenses. Among his simple suggestions are using shotguns for point defense against small and fragile drones, improving communications among security forces, and complicating the targeting problem for would-be attackers. Perhaps the best defense against drones is merely to avoid overthinking the problem.

Air Combat And Technology

Any model of air combat needs to address the effect of weapons on the opposing forces.  In the Dupuy Air Combat Model (DACM), this was rifled bullets fired from machine guns, as well as small caliber cannon in the 20-30 millimeter (mm) class.  Such was the state of air combat in World War II.  This page is an excellent, in-depth analysis of the fighter guns and cannon.  Of course, technology has effects beyond firepower.  One of the most notable technologies to go into active use during World War II was radar, contributing to the effectiveness of the Royal Air Force (RAF), successfully holding off the Wehrmacht’s Luftwaffe in the Battle of Britain.

Since that time, driven by “great power competition”, technology continues to advance the art of warfare in the air.  This happened in several notable stages during the Cold War, and was on display in subsequent contemporary conflicts when client or proxy states fought on behalf of the great powers.  Examples include well-known conflicts, such as the Korean and Vietnam conflicts, but also the conflicts between the Arabs and Israelis.  In the Korean War, archives now illustrate than Russian pilots secretly flew alongside North Korean and Chinese pilots against the allied forces.

Stages in technology are often characterized by generation.  Many of the features that are associated with the generations are driven by the Cold War arms race, and the back and forth development cycles and innovation cycles by the aircraft designers.  This was evident in comments by Aviation Week’s Bill Sweetman, remarking that the Jas-39 Grippen is actually a sixth generation fighter, based upon the alternative focus on maintainability, operability from short runways / austere airbases (or roadways!), the focus on cost reduction, but most importantly, software: “The reason that the JAS 39E may earn a Gen 6 tag is that it has been designed with these issues in mind. Software comes first: The new hardware runs Mission System 21 software, the latest roughly biennial release in the series that started with the JAS 39A/B.”

Upon close inspection of the DACM parameters, we can observe a few important data elements and metadata definitions: avionics (aka software & hardware), and sensor performance.  Those two are about data and information.  A concise method to assign values to these parameters is needed.  The U.S. Air Force (USAF) Air Combat Command (ACC) has used the generation of fighters as a proxy for this in the past, at least at a notional level:

[Source: 5th Generation Fighters, Lt Gen Hawk Carlisle, USAF ACC]

The Fleet Series game that has been reviewed in previous posts has a different method.  The Air-to-Air Combat Resolution Table does not seem to resonate well, as the damage effects are imposed against either one side or the other.  This does not jive with the stated concerns of the USAF, which has been worried about an exchange in which both Red and Blue forces are destroyed or eliminated in a mutual fashion, with a more or less one-for-one exchange ratio.

The Beyond Visual Range (BVR) version, named Long Range Air-to-Air (LRAA) combat in Asian Fleet, is a better model of this, in which each side rolls a die to determine the effect of long range missiles, and each side may take losses on non-stealthy units, as the stealthy units are immune to damage at BVR.

One important factor that the Fleet Series combat process does resolve is a solid determination of which side “holds” the airspace, and this is capable of using other support aircraft, such as AWACS, tankers, reconnaissance, etc.  Part of this determination is the relative morale of the opposing forces.  These effects have been clearly evident in air campaigns such as the strategic bombing campaign on Germany and Japan in the latter portion of World War II.

Dealing with this conundrum, I decided to relax by watching some dogfight videos on YouTube, Dogfights Greatest Air Battles, and this was rather entertaining, it included a series of engagements in aerial combat, taken from the exploits of American aces over the course of major wars:

  1. Eddie Rickenbacker, flying a Spad 13 in World War I,
  2. Clarence Emil “Bud” Anderson, flying a P-51B “Old Crow” in European skies during World War II, flying 67 missions in P-51Ds, 35 missions in F-80s and 121 missions in F-86s. He wrote “No Guts, No Glory,” a how to manual with lots of graphics of named maneuvers like the “Scissors.”
  3. Frederick Corbin “Boots” Blesse, flying a F-86 Sabre in “MiG Alley” in North Korea close to the Chinese border,
  4. Several engagements and interviews of aces from the Vietnam War:
    1. Steve Ritchie, who said “Surprise is a key element.” Previously discussed.
    2. Robin Olds – a triple ace in both WWII (P-38 and P-51) and Vietnam (F-4), and the mastermind of Operation Bolo, a fantastic application of deception.
    3. Randy “Duke” Cunningham and William P “Irish” Discol, flying an F-4 Phantom, “Showtime 100”, and up against North Vietnamese MiG-17s.

An interesting paraphrase by Cunningham of Manfred von Richthofen, the Red Baron’s statement: “When he sees the enemy, he attacks and kills, everything else is rubbish.”  What Richthofen said (according to skygod.com), was “The duty of the fighter pilot is to patrol his area of the sky, and shoot down any enemy fighters in that area. Anything else is rubbish.” Richtofen would not let members of his Staffel strafe troops in the trenches.

The list above is a great reference, and it got me to consider an alternative form of generation, including the earlier wars, and the experiences gained in those wars.  Indeed, we can press on in time to include the combat performance of the US and Allied militaries in the first Gulf War, 1990, as previously discussed.

There was a reference to the principles of aerial combat, such as the Dicta Boelcke:

  1. Secure the benefits of aerial combat (speed, altitude, numerical superiority, position) before attacking. Always attack from the sun.
  2. If you start the attack, bring it to an end.
  3. Fire the machine gun up close and only if you are sure to target your opponent.
  4. Do not lose sight of the enemy.
  5. In any form of attack, an approach to the opponent from behind is required.
  6. If the enemy attacks you in a dive, do not try to dodge the attack, but turn to the attacker.
  7. If you are above the enemy lines, always keep your own retreat in mind.
  8. For squadrons: In principle attack only in groups of four to six. If the fight breaks up in noisy single battles, make sure that not many comrades pounce on an opponent.

Appendix A – my own attempt to classify the generations of jet aircraft, in an attempt to rationalize the numerous schemes … until I decided that it was a fool’s errand:

  • Generation Zero:
    • World War II, 1948 Arab Israeli conflict
    • Blue: Spitfire, P-51 Mustang,
    • Red: Bf-109, FW-190, Mitsubishi Zero/George
    • Propeller engines, machine guns & cannons
  • First Generation:
    • Korean War, China & Taiwan conflicts
    • Blue: F-86 Sabre,
    • Red: MiG-15, Me-262?
    • Jet engines, swept wings, machine guns & cannons, early air-to-air missiles
  • Second Generation –
    • 1967 and Cuban Missile Crisis
    • Blue: F-100, F-102, F-104, F-5, F-8
    • Grey: Mirage III, Mirage F1
    • Red: MiG-19, MiG-21
    • Multi-mach speeds, improved air-to-air missiles, but largely within-visual range (WVR), early radar warning receivers (RWR), early countermeasures.
  • Third Generation:
    • 1973 Arab Israeli Wars, Vietnam War
    • Blue: F-4 Phantom, F-111 Ardvark, F-106?
    • Grey: Mirage III
    • Red: MiG-23, MiG-25, Su-15
    • Look-down/Shoot-down capability, radar-guided missiles, Beyond Visual Range (BVR), Identification Friend or Foe (IFF), all-aspect infrared missiles.
  • Fourth Generation:
    • 1980’s Cold War, 1990 Gulf War, 1982 Lebanon, 1980-88 Iran-Iraq War
    • Blue: F-15 Eagle, F-16 Viper, F-14 Tomcat, F/A-18 Hornet
    • Grey: Mirage 2000
    • Red: MiG-29, MiG-31, Su-27/30
  • Fourth Plus Generation:
    • 2003 Gulf War, 2011 Libiya
    • Blue: F/A-18E/F Super Hornet, F-15 improved (F-15E, F-15I, F-15SG, F-15SK…)
    • Grey: Eurofighter Typhoon, Rafale
    • Red: Su-35S
  • Fifth Generation:
    • Marketing term used by aircraft producers
    • Blue: Adanced Tactical Fighter (ATF) = F-22 Raptor, Joint Strike Fighter (JSF) = F-35 Lightening II
    • Grey: Grippen?
    • Red: PAK-FA Su-57, J-20
  • Sixth Generation – the current frontier
    • Blue: Next Generation Air Dominance (NGAD) program, UAS ?
    • Red: ?
    • Grey: Two seat, Twin tail “drone-herder”?

General McInerney

Lt. General Thomas McInerney has been in the news lately, mostly for saying things that are getting him kicked off of news shows:

https://en.wikipedia.org/wiki/Thomas_McInerney

It is my understanding that he was the person who was responsible for making sure that DACM (Dupuy Air Combat Model) was funded by AFSC. He then retired from the Air Force in 1994. We completed the demonstration phase of the DACM and quite simply, there was no one left in the Air Force who was interested in funding it. So, work stopped. I never met General McInerney and was not involved in the marketing of the initial effort.

The Dupuy Institute Air Model Historical Data Study

The Dupuy Air Campaign Model (DACM)

But, this is typical of the problems with doing business with the Pentagon, where an officer will take an interest in your work, generate funding for it, but by the time the first steps are completed, that officer has moved on to another assignment. This has happened to us with other projects. One of these efforts was a joint research project that was done by TDI and former Army surgeon on casualty rates. It was for J-4 of the Joint Staff. The project officer there was extremely interested and involved in the work, but then moved to another assignment. By the time we got original effort completed, the division was headed by an Air Force Colonel who appeared to be only interested in things that flew. Therefore, the project died (except that parts of it were used for Chapter 15: Casualties, pages 193-198, in War by Numbers).

Our experience in dealing with the U.S. defense establishment is that sometimes research efforts that takes longer than a few months will die……because the people interested in it have moved on. This sometimes leads to simple, short-term analysis and fewer properly funded long-term projects.

Human Factors In Combat: Syrian Strike Edition

Missile fire lit up the Damascus sky last week as the U.S. and allies launched an attack on chemical weapons sites. [Hassan Ammar, AP/USA Today]

Even as pundits and wonks debate the political and strategic impact of the 14 April combined U.S., British, and French cruise missile strike on Assad regime chemical warfare targets in Syria, it has become clear that effort was a notable tactical success.

Despite ample warning that the strike was coming, the Syrian regime’s Russian-made S-200 surface-to-air missile defense system failed to shoot down a single incoming missile. The U.S. Defense Department claimed that all 105 cruise missiles fired struck their targets. It also reported that the Syrians fired 40 interceptor missiles but nearly all launched after the incoming cruise missiles had already struck their targets.

Although cruise missiles are difficult to track and engage even with fully modernized air defense systems, the dismal performance of the Syrian network was a surprise to many analysts given the wary respect paid to it by U.S. military leaders in the recent past. Although the S-200 dates from the 1960s, many surmise an erosion in the combat effectiveness of the personnel manning the system is the real culprit.

[A] lack of training, command and control and other human factors are probably responsible for the failure, analysts said.

“It’s not just about the physical capability of the air defense system,” said David Deptula, a retired, three-star Air Force general. “It’s about the people who are operating the system.”

The Syrian regime has become dependent upon assistance from Russia and Iran to train, equip, and maintain its military forces. Russian forces in Syria have deployed the more sophisticated S-400 air defense system to protect their air and naval bases, which reportedly tracked but did not engage the cruise missile strike. The Assad regime is also believed to field the Russian-made Pantsir missile and air-defense artillery system, but it likely was not deployed near enough to the targeted facilities to help.

Despite the pervasive role technology plays in modern warfare, the human element remains the most important factor in determining combat effectiveness.

Abstraction and Aggregation in Wargame Modeling

[IPMS/USA Reviews]

“All models are wrong, some models are useful.” – George Box

Models, no matter what their subjects, must always be an imperfect copy of the original. The term “model” inherently has this connotation. If the subject is exact and precise, then it is a duplicate, a replica, a clone, or a copy, but not a “model.” The most common dimension to be compromised is generally size, or more literally the three spatial dimensions of length, width and height. A good example of this would be a scale model airplane, generally available in several ratios from the original, such as 1/144, 1/72 or 1/48 (which are interestingly all factors of 12 … there are also 1/100 for the more decimal-minded). These mean that the model airplane at 1/72 scale would be 72 times smaller … take the length, width and height measurements of the real item, and divide by 72 to get the model’s value.

If we take the real item’s weight and divide by 72, we would not expect our model to weight 72 times less! Not unless the same or similar materials would be used, certainly. Generally, the model has a different purpose than replicating the subject’s functionality. It is helping to model the subject’s qualities, or to mimic them in some useful way. In the case of the 1/72 plastic model airplane of the F-15J fighter, this might be replicating the sight of a real F-15J, to satisfy the desire of the youth to look at the F-15J and to imagine themselves taking flight. Or it might be for pilots at a flight school to mimic air combat with models instead of ha

The model aircraft is a simple physical object; once built, it does not change over time (unless you want to count dropping it and breaking it…). A real F-15J, however, is a dynamic physical object, which changes considerably over the course of its normal operation. It is loaded with fuel, ordnance, both of which have a huge effect on its weight, and thus its performance characteristics. Also, it may be occupied by different crew members, whose experience and skills may vary considerably. These qualities of the unit need to be taken into account, if the purpose of the model is to represent the aircraft. The classic example of this is a flight envelope model of an F-15A/C:

[Quora]

This flight envelope itself is a model, it represents the flight characteristics of the F-15 using two primary quantitative axes – altitude and speed (in numbers of mach), and also throttle setting. Perhaps the most interesting thing about this is the realization than an F-15 slows down as it descends. Are these particular qualities of an F-15 required to model air combat involving such and aircraft?

How to Apply This Modeling Process to a Wargame?

The purpose of the war game is to model or represent the possible outcome of a real combat situation, played forward in the model at whatever pace and scale the designer has intended.

As mentioned previously, my colleague and I are playing Asian Fleet, a war game that covers several types of naval combat, including those involving air units, surface units and submarine units. This was published in 2007, and updated in 2010. We’ve selected a scenario that has only air units on either side. The premise of this scenario is quite simple:

The Chinese air force, in trying to prevent the United States from intervening in a Taiwan invasion, will carry out an attack on the SDF as well as the US military base on Okinawa. Forces around Shanghai consisting of state-of-the-art fighter bombers and long-range attack aircraft have been placed for the invasion of Taiwan, and an attack on Okinawa would be carried out with a portion of these forces. [Asian Fleet Scenario Book]

Of course, this game is a model of reality. The infinite geospatial and temporal possibilities of space-time which is so familiar to us has been replaced by highly aggregated discreet buckets, such as turns that may last for a day, or eight hours. Latitude, longitude and altitude are replaced with a two-dimensional hexagonal “honey comb” surface. Hence, distance is no longer computed in miles or meters, but rather in “hexes”, each of which is about 50 nautical miles. Aircraft are effectively aloft, or on the ground, although a “high mission profile” will provide endurance benefits. Submarines are considered underwater, or may use “deep mode” attempting to hide from sonar searches.

Maneuver units are represented by “counters” or virtual chits to be moved about the map as play progresses. Their level of aggregation varies from large and powerful ships and subs represented individually, to smaller surface units and weaker subs grouped and represented by a single counter (a “flotilla”), to squadrons or regiments of aircraft represented by a single counter. Depending upon the nation and the military branch, this may be a few as 3-5 aircraft in a maritime patrol aircraft (MPA) detachment (“recon” in this game), to roughly 10-12 aircraft in a bomber unit, to 24 or even 72 aircraft in a fighter unit (“interceptor” in this game).

Enough Theory, What Happened?!

The Chinese Air Force mobilized their H6H bomber, escorted by large numbers of Flankers (J11 and Su-30MK2 fighters from the Shanghai area, and headed East towards Okinawa. The US Air Force F-15Cs supported by airborne warning and control system (AWACS) detected this inbound force and delayed engagement until their Japanese F-15J unit on combat air patrol (CAP) could support them, and then engaged the Chinese force about 50 miles from the AWACS orbits. In this game, air combat is broken down into two phases, long-range air to air (LRAA) combat (aka beyond visual range, BVR), and “regular” air combat, or within visual range (WVR) combat.

In BVR combat, only units marked as equipped with BVR capability may attack:

  • 2 x F-15C units have a factor of 32; scoring a hit in 5 out of 10 cases, or roughly 50%.
  • Su-30MK2 unit has a factor of 16; scoring a hit in 4 out of 10 cases, ~40%.

To these numbers a modifier of +2 exists when the attacker is supported by AWACS, so the odds to score a hit increase to roughly 70% for the F-15Cs … but in our example they miss, and the Chinese shot misses as well. Thus, the combat proceeds to WVR.

In WVR combat, each opposing side sums their aerial combat factors:

  • 2 x F-15C (32) + F-15J (13) = 45
  • Su-30MK2 (15) + J11 (13) + H6H (1) = 29

These two numbers are then expressed as a ratio, attacker-to-defender (45:29), and rounded down in favor of the defender (1:1), and then a ten-sided-die (d10) is rolled to consult the Air-to-Air Combat Results Table, on the “CAP/AWACS Interception” line. The die was rolled, and a result of “0/0r” was achieved, which basically says that neither side takes losses, but the defender is turned back from the mission (“r” being code for “return to base”). Given the +2 modifier for the AWACS, the worst outcome for the Allies would be a mutual return to base result (“0r/0r”). The best outcome would be inflicting two “steps” of damage, and sending the rest home (“0/2r”). A step of loss is about one half of an air unit, represented by flipping over the counter or chit, and operating with the combat factors at about half strength.

To sum this up, as the Allied commander, my conclusion was that the Americans were hung-over or asleep for this engagement.

I am encouraged by some similarities between this game and the fantastic detail that TDI has just posted about the DACM model, here and here. Thus, I plan to not only dissect this Asian Fleet game (VGAF), but also go a gap analysis between VGAF and DACM.

The Dupuy Air Campaign Model (DACM)

[The article below is reprinted from the April 1997 edition of The International TNDM Newsletter. A description of the TDI Air Model Historical Data Study can be found here.]

The Dupuy Air Campaign Model
by Col. Joseph A. Bulger, Jr., USAF, Ret.

The Dupuy Institute, as part of the DACM [Dupuy Air Campaign Model], created a draft model in a spreadsheet format to show how such a model would calculate attrition. Below are the actual printouts of the “interim methodology demonstration,” which shows the types of inputs, outputs, and equations used for the DACM. The spreadsheet was created by Col. Bulger, while many of the formulae were the work of Robert Shaw.

The Dupuy Institute Air Model Historical Data Study

British Air Ministry aerial combat diagram that sought to explain how the RAF had fought off the Luftwaffe. [World War II Today]

[The article below is reprinted from the April 1997 edition of The International TNDM Newsletter.]

Air Model Historical Data Study
by Col. Joseph A. Bulger, Jr., USAF, Ret

The Air Model Historical Study (AMHS) was designed to lead to the development of an air campaign model for use by the Air Command and Staff College (ACSC). This model, never completed, became known as the Dupuy Air Campaign Model (DACM). It was a team effort led by Trevor N. Dupuy and included the active participation of Lt. Col. Joseph Bulger, Gen. Nicholas Krawciw, Chris Lawrence, Dave Bongard, Robert Schmaltz, Robert Shaw, Dr. James Taylor, John Kettelle, Dr. George Daoust and Louis Zocchi, among others. After Dupuy’s death, I took over as the project manager.

At the first meeting of the team Dupuy assembled for the study, it became clear that this effort would be a serious challenge. In his own style, Dupuy was careful to provide essential guidance while, at the same time, cultivating a broad investigative approach to the unique demands of modeling for air combat. It would have been no surprise if the initial guidance established a focus on the analytical approach, level of aggregation, and overall philosophy of the QJM [Quantified Judgement Model] and TNDM [Tactical Numerical Deterministic Model]. It was clear that Trevor had no intention of steering the study into an air combat modeling methodology based directly on QJM/TNDM. To the contrary, he insisted on a rigorous derivation of the factors that would permit the final choice of model methodology.

At the time of Dupuy’s death in June 1995, the Air Model Historical Data Study had reached a point where a major decision was needed. The early months of the study had been devoted to developing a consensus among the TDI team members with respect to the factors that needed to be included in the model. The discussions tended to highlight three areas of particular interest—factors that had been included in models currently in use, the limitations of these models, and the need for new factors (and relationships) peculiar to the properties and dynamics of the air campaign. Team members formulated a family of relationships and factors, but the model architecture itself was not investigated beyond the surface considerations.

Despite substantial contributions from team members, including analytical demonstrations of selected factors and air combat relationships, no consensus had been achieved. On the contrary, there was a growing sense of need to abandon traditional modeling approaches in favor of a new application of the “Dupuy Method” based on a solid body of air combat data from WWII.

The Dupuy approach to modeling land combat relied heavily on the ratio of force strengths (largely determined by firepower as modified by other factors). After almost a year of investigations by the AMHDS team, it was beginning to appear that air combat differed in a fundamental way from ground combat. The essence of the difference is that in air combat, the outcome of the maneuver battle for platform position must be determined before the firepower relationships may be brought to bear on the battle outcome.

At the time of Dupuy’s death, it was apparent that if the study contract was to yield a meaningful product, an immediate choice of analysis thrust was required. Shortly prior to Dupuy’s death, I and other members of the TDI team recommended that we adopt the overall approach, level of aggregation, and analytical complexity that had characterized Dupuy’s models of land combat. We also agreed on the time-sequenced predominance of the maneuver phase of air combat. When I was asked to take the analytical lead for the contact in Dupuy’s absence, I was reasonably confident that there was overall agreement.

In view of the time available to prepare a deliverable product, it was decided to prepare a model using the air combat data we had been evaluating up to that point—June 1995. Fortunately, Robert Shaw had developed a set of preliminary analysis relationships that could be used in an initial assessment of the maneuver/firepower relationship. In view of the analytical, logistic, contractual, and time factors discussed, we decided to complete the contract effort based on the following analytical thrust:

  1. The contract deliverable would be based on the maneuver/firepower analysis approach as currently formulated in Robert Shaw’s performance equations;
  2. A spreadsheet formulation of outcomes for selected (Battle of Britain) engagements would be presented to the customer in August 1995;
  3. To the extent practical, a working model would be provided to the customer with suggestions for further development.

During the following six weeks, the demonstration model was constructed. The model (programmed for a Lotus 1-2-3 style spreadsheet formulation) was developed, mechanized, and demonstrated to ACSC in August 1995. The final report was delivered in September of 1995.

The working model demonstrated to ACSC in August 1995 suggests the following observations:

  • A substantial contribution to the understanding of air combat modeling has been achieved.
  • While relationships developed in the Dupuy Air Combat Model (DACM) are not fully mature, they are analytically significant.
  • The approach embodied in DACM derives its authenticity from the famous “Dupuy Method” thus ensuring its strong correlations with actual combat data.
  • Although demonstrated only for air combat in the Battle of Britain, the methodology is fully capable of incorporating modem technology contributions to sensor, command and control, and firepower performance.
  • The knowledge base, fundamental performance relationships, and methodology contributions embodied in DACM are worthy of further exploration. They await only the expression of interest and a relatively modest investment to extend the analysis methodology into modem air combat and the engagements anticipated for the 21st Century.

One final observation seems appropriate. The DACM demonstration provided to ACSC in August 1995 should not be dismissed as a perhaps interesting, but largely simplistic approach to air combat modeling. It is a significant contribution to the understanding of air combat relationships that will prevail in the 21st Century. The Dupuy Institute is convinced that further development of DACM makes eminent good sense. An exploitation of the maneuver and firepower relationships already demonstrated in DACM will provide a valid basis for modeling air combat with modern technology sensors, control mechanisms, and weapons. It is appropriate to include the Dupuy name in the title of this latest in a series of distinguished combat models. Trevor would be pleased.

Assessing The Assessments Of The Military Balance In The China Seas

“If we maintain our faith in God, love of freedom, and superior global airpower, the future [of the US] looks good.” — U.S. Air Force General Curtis E. LeMay (Commander, U.S. Strategic Command, 1948-1957)

Curtis LeMay was involved in the formation of RAND Corporation after World War II. RAND created several models to measure the dynamics of the US-China military balance over time. Since 1996, this has been computed for two scenarios, differing by range from mainland China: one over Taiwan and the other over the Spratly Islands. The results of the model results for selected years can be seen in the graphic below.

The capabilities listed in the RAND study are interesting, notable in that the air superiority category, rough parity exists as of 2017. Also, the ability to attack air bases has given an advantage to the Chinese forces.

Investigating the methodology used does not yield any precise quantitative modeling examples, as would be expected in a rigorous academic effort, although there is some mention of statistics, simulation and historical examples.

The analysis presented here necessarily simplifies a great number of conflict characteristics. The emphasis throughout is on developing and assessing metrics in each area that provide a sense of the level of difficulty faced by each side in achieving its objectives. Apart from practical limitations, selectivity is driven largely by the desire to make the work transparent and replicable. Moreover, given the complexities and uncertainties in modern warfare, one could make the case that it is better to capture a handful of important dynamics than to present the illusion of comprehensiveness and precision. All that said, the analysis is grounded in recognized conclusions from a variety of historical sources on modern warfare, from the air war over Korea and Vietnam to the naval conflict in the Falklands and SAM hunting in Kosovo and Iraq. [Emphasis added].

We coded most of the scorecards (nine out of ten) using a five-color stoplight scheme to denote major or minor U.S. advantage, a competitive situation, or major or minor Chinese advantage. Advantage, in this case, means that one side is able to achieve its primary objectives in an operationally relevant time frame while the other side would have trouble in doing so. [Footnote] For example, even if the U.S. military could clear the skies of Chinese escort fighters with minimal friendly losses, the air superiority scorecard could be coded as “Chinese advantage” if the United States cannot prevail while the invasion hangs in the balance. If U.S. forces cannot move on to focus on destroying attacking strike and bomber aircraft, they cannot contribute to the larger mission of protecting Taiwan.

All of the dynamic modeling methodology (which involved a mix of statistical analysis, Monte Carlo simulation, and modified Lanchester equations) is publicly available and widely used by specialists at U.S. and foreign civilian and military universities.” [Emphasis added].

As TDI has contended before, the problem with using Lanchester’s equations is that, despite numerous efforts, no one has been able to demonstrate that they accurately represent real-world combat. So, even with statistics and simulation, how good are the results if they have relied on factors or force ratios with no relation to actual combat?

What about new capabilities?

As previously posted, the Kratos Mako Unmanned Combat Aerial Vehicle (UCAV), marketed as the “unmanned wingman,” has recently been cleared for export by the U.S. State Department. This vehicle is specifically oriented towards air-to-air combat, is stated to have unparalleled maneuverability, as it need not abide by limits imposed by human physiology. The Mako “offers fighter-like performance and is designed to function as a wingman to manned aircraft, as a force multiplier in contested airspace, or to be deployed independently or in groups of UASs. It is capable of carrying both weapons and sensor systems.” In addition, the Mako has the capability to be launched independently of a runway, as illustrated below. The price for these vehicles is three million each, dropping to two million each for an order of at least 100 units. Assuming a cost of $95 million for an F-35A, we can imagine a hypothetical combat scenario pitting two F-35As up against 100 of these Mako UCAVs in a drone swarm; a great example of the famous phrase, quantity has a quality all its own.

A battery of Kratos Aerial Target drone ready for take off. One of the advantages of the low-cost Kratos drones are their ability to get into the air quickly. [Kratos Defense]

How to evaluate the effects of these possible UCAV drone swarms?

In building up towards the analysis of all of these capabilities in the full theater, campaign level conflict, some supplemental wargaming may be useful. One game that takes a good shot at modeling these dynamics is Asian Fleet.  This is a part of the venerable Fleet Series, published by Victory Games, designed by Joseph Balkoski to model modern (that is Cold War) naval combat. This game system has been extended in recent years, originally by Command Magazine Japan, and then later by Technical Term Gaming Company.

Screenshot of Asian Fleet module by Bryan Taylor [vassalengine.org]

More to follow on how this game transpires!

Drones And The U.S. Navy

An X-47 Unmanned Combat Air System (UCAS) drone lands on the USS Theodore Roosevelt during a test in 2014. [Breaking Defense]

Preamble & Warning (P&W): Please forgive me, this is an acronym heavy post.

In May 2013, the U.S. Navy (USN) reached milestones by having a “drone,” or unmanned aerial vehicle (UAV) land and take-off from an aircraft carrier. This was a significant achievement in aviation, and heralded an era of combat UAVs (UCAV) being integrated into carrier air wings (CVW). This vehicle, the X-47B, was built by Northrup Grumman, under the concept of a carrier-based stealthy strike vehicle.

Ultimately, after almost three years, their decision was announced:

On 1 February 2016, after many delays over whether the [Unmanned Carrier-Launched Airborne Surveillance and Strike] UCLASS would specialize in strike or intelligence, surveillance and reconnaissance (ISR) roles, it was reported that a significant portion of the UCLASS effort would be directed to produce a Super Hornet-sized carrier-based aerial refueling tanker as the Carrier-Based Aerial-Refueling System (CBARS), with ‘a little ISR’ and some capabilities for communications relay, and strike capabilities put off to a future version of the aircraft. In July 2016, it was officially named ‘MQ-25A Stingray’.

The USN, who had just proven that they can add a stealthy UCAV to carrier flight deck operations, decided to put this new capability on the shelf, and instead refocus the efforts of the aerospace defense industry on a brand new requirement, namely …

For mission tanking, the threshold requirement is offloading 14,000 lb. of fuel to aviation assets at 500 nm from the ship, thereby greatly extending the range of the carrier air wing, including the Lockheed Martin F-35C and Boeing F/A-18 Super Hornet. The UAV must also be able to integrate with the Nimitz-class carriers, being able to safely launch and recover and not take up more space than is allocated for storage, maintenance and repairs.

Boeing has fashioned part of St. Louis Lambert International Airport into an aircraft carrier deck, complete with a mock catapult system. [Boeing]

Why did they do this?

The Pentagon apparently made this program change in order to address the Navy’s expected fighter shortfall by directing funds to buy additional F/A-18E/F Super Hornets and accelerate purchases and development of the F-35C. Having the CBARS as the first carrier-based UAV provides a less complex bridge to the future F/A-XX, should it be an autonomous strike platform. It also addresses the carriers’ need for an organic refueling aircraft, proposed as a mission for the UCLASS since 2014, freeing up the 20–30 percent of Super Hornets performing the mission in a more capable and cost effective manner than modifying the F-35, V-22 Osprey, and E-2D Hawkeye, or bringing the retired S-3 Viking back into service.

Notice within this quote the supposition that the F/A-XX would be an autonomous strike platform. This program was originally a USN-specific program to build a next-generation platform to perform both strike and air superiority missions, much like the F/A-18 aircraft are “swing role.” The US Air Force (USAF) had a separate program for a next generation air superiority aircraft called the F-X. These programs were combined by the Department of Defense (DoD) into the Next Generation Air Dominance (NGAD) program. We can tell from the name of this program that it is clearly focused on the air superiority mission, as compared to the balance of strike and superiority, implicit in the USN program.

Senator John McCain, chairman of the Senate Armed Services Committee (SASC), wrote a letter to then Secretary of Defense Ash Carter, on 2015-03-24, stating, “I strongly believe that the Navy’s first operational unmanned combat aircraft must be capable of performing a broad range of missions in contested environments as part of the carrier air wing, including precision strike as well as [ISR].” This is effectively an endorsement of the X-47B, and quite unlike the MQ-25.

I’m in agreement with Senator McCain on this. I think that a great deal of experience could have been gained by continuing the development and test of the X-47B, and possibly deploying the vehicle to the fleet.

The Navy hinted at the possibility of using the UCLASS in air-to-air engagements as a ‘flying missile magazine’ to supplement the F/A-18 Super Hornet and F-35C Lightning II as a type of ‘robotic wingman.’ Its weapons bay could be filled with AIM-120 AMRAAMs and be remotely operated by an E-2D Hawkeye or F-35C flight leader, using their own sensors and human judgment to detect, track, and direct the UAV to engage an enemy aircraft. The Navy’s Naval Integrated Fire Control-Counter Air (NIFC-CA) concept gives a common picture of the battle space to multiple air platforms through data-links, where any aircraft could fire on a target in their range that is being tracked by any sensor, so the forward deployed UCLASS would have its missiles targeted by another controller. With manned-unmanned teaming for air combat, a dedicated unmanned supersonic fighter may not be developed, as the greater cost of high-thrust propulsion and an airframe of similar size to a manned fighter would deliver a platform with comparable operating costs and still without an ability to engage on its own.

Indeed, the German Luftwaffe has completed an air combat concept study, stating that the fighter of the 2040’s will be a “stealthy drone herder”:

Interestingly the twin-engine, twin-tail stealth design would be a twin-seat design, according to Alberto Gutierrez, Head of Eurofighter Programme, Airbus DS. The second crewmember may be especially important for the FCAS concept of operations, which would see it operate in a wider battle network, potentially as a command and control asset or UCAV/UAV mission commander.

Instead, the USN has decided to banish the drones into the tanker and light ISR roles, to focus on having more Super Hornets available, and move towards integrating the F-35C into the CVW. I believe that this is a missed opportunity to move ahead to get direct front line experience in operating UCAVs as part of combat carrier operations.