“The ATF will have the same tactical advantage over the F-15 that the F-15 has over the Goodyear blimp.” That blunt 1986 statement by Northrop program manager Dell Jacobs encapsulated the promise of the U.S. Air Force’s Advanced Tactical Fighter competition a battle between two radically different visions for air dominance. One of them, the Northrop/McDonnell Douglas YF-23A “Black Widow II,” is a classic example of how engineering genius can be offset by politics, perception, and risk evaluation.
The YF-23A was the stealth purist’s worst nightmare. Its blended wing-body, diamond planform, and all-moving V-tail were tailored to deflect radar energy away from threat emitters. S-duct inlets protected compressor faces, and the exhaust was shrouded and cooled extensively to extinguish infrared radiation. “Transpiration cooling” tiles made of porous metal structures bled coolant to keep the skin from burning when running full afterburner. This allowed the low observable profile to be preserved since it didn’t need reshaped radar-reflective cooling ducts. Shupek recalled that the YF-23’s radar cross-section “looked just like a spider web,” a nod to the P-61 Black Widow night fighter that was its namesake inspiration.
Performance matched the stealth. The GE YF120-powered “Gray Ghost” test article supercruised at Mach 1.6, narrowly outpacing the YF-22’s Mach 1.58, and the Pratt & Whitney YF119-powered “Black Widow II” reached Mach 1.43 without afterburner. Airspeed was estimated to a maximum of over Mach 2. Combat radius was more than its rival’s by far a virtue in deep penetration or naval acquisition missions. Ceiling was an impressive 65,000 feet. The numbers were achieved without thrust vectoring, which was deliberately not added by Northrop so as not to degrade the rear-aspect radar cross-section. Alternatively, the extensive surface area of the V-tail offered agility that, while competitive, was not able to match the YF-22’s post-stall handling.
Lockheed’s YF-22, on the other hand, welcomed agility as a identifying characteristic. Its two-dimensional thrust-vectoring nozzles allowed for sensational high-alpha demonstrations, such as the cobra maneuver, in flight displays. In an era when the “white-scarf” dogfighting ethos continued to shape procurement thinking, such theatricality appealed. Test pilot Paul Metz, who piloted both aircraft, noted that Lockheed “fundamentally understood how to sell their aircraft” with dynamic missile passes and 9G maneuvers, whereas Northrop’s team “thought and spoke almost exclusively in engineering terms.”
Engine selection also tipped the competition. While the GE YF120 offered more performance through variable-cycle technology, it was more complex and involved more development risk. The Air Force selected the more mature, lower-risk Pratt & Whitney YF119 already on the YF-22 prototype and embraced a broader preference for less-risky methods in a $72 billion program.
Industrial base politics were at play. Lockheed did not possess any active fighter production lines, while Northrop produced the F/A-18E/F and B-2 Spirit. “It was in the national interest of the U.S. to keep Lockheed alive as an airframer,” said Shupek, adding that unofficial sources then told Northrop their design “actually met the specs better than the Lockheed design.” Lockheed’s alliance with Boeing and General Dynamics also created a powerful political coalition, backed by its F-117 Nighthawk heritage.
Stealth technology itself was at a crossroads. The YF-23’s configuration came from experience with the faceted F-117 but with smoother, blended shapes to diffuse radar energy over a broader frequency range. Aft shielding of hot exhaust at the rear and look-up radar threats was an advancement over the Nighthawk’s exposed nozzles. These are a design philosophy in anticipation of beyond-visual-range combat, where first detection and first shot would decide the outcome. But late Cold War procurement culture still favored multi-role versatility, including close-in maneuverability.
Both prototypes eventually met the Air Force’s technical requirements. As then-Air Force Secretary Donald Rice put it, “We ended up with two aircraft, each one of which could meet the Air Force’s technical specifications and technical requirements.” The perceived agility edge of the YF-22 relied on a more conservative engine choice, and Lockheed’s political clout won out. The F-22 Raptor entered service in 2005, but production was capped at 186 aircraft far short of the target 750 due to post–Cold War budget cuts and cost overruns that the YF-23 could have avoided.
Now, the last two YF-23 prototypes, one without an engine at the Western Museum of Flight and the other at the U.S. National Museum of the U.S. Air Force, are reminders that in aerospace procurement, engineering superiority is not necessarily a guarantee of success. In the ATF competition, America chose agility instead of stealth, and the Black Widow II became a legend without ever facing the enemy.
