Check your six and tighten your harness, folks. Today we’re talking about the “one that got away.”
In the early 1990s, the desert floor at Edwards Air Force Base was the stage for a clash of titans known as the Advanced Tactical Fighter (ATF) competition. On one side, you had the Lockheed YF-22—agile, aggressive, and traditional. On the other, you had the Northrop YF-23.
Looking at the YF-23 wasn’t like looking at a jet; it was like looking at a visitor from a future century. With its diamond-shaped wings, massive “ruddervators,” and a profile that looked like it was melted out of a single piece of composite, it was a radical departure from everything we knew about dogfighting. History tells us the YF-22 won the contract and became the F-22 Raptor. But as we look at the requirements for the Next Generation Air Dominance (NGAD) and 6th-generation fighters, a haunting question remains: Was the YF-23 actually the better plane for the future?
The Stealth Shadow: Invisible from All Angles
When Northrop designed the YF-23, they didn’t just want to be “stealthy.” They wanted to be a ghost. While the YF-22 utilized a more traditional tail configuration that required more edges and surfaces, the YF-23 opted for a revolutionary four-surface design.
The YF-23’s most striking feature was its lack of horizontal stabilizers. Instead, it used two massive, canted tails that handled both pitch and yaw. This reduced the aircraft’s Radar Cross Section (RCS) significantly, especially from the side and rear profiles. Furthermore, Northrop tucked the engines deep into the fuselage, using “S-duct” intakes and lined troughs to mask the heat signature of the exhaust from infrared sensors.
In the current 6th-generation design philosophy, all-aspect stealth is the gold standard. The YF-23 was achieving levels of low-observability in 1990 that we are only now seeing perfected in modern blueprints.
Speed and Reach: The “Missileer” Philosophy
In the cockpit of a 4th-gen fighter, you expect to get into a “knife fight in a phone booth”—a turning dogfight. The YF-22 was built for that; it had thrust-vectoring nozzles that allowed it to perform gravity-defying maneuvers.
The YF-23, however, didn’t have thrust-vectoring. Why? Because Northrop believed that in the age of stealth and long-range missiles, if you were turning with an enemy, you had already failed.
The YF-23 was built for:
- Extreme Supercruise: It could fly at Mach 1.6 without afterburners, significantly faster than the YF-22.
- Kinetic Energy: Speed is life. A faster jet imparts more energy to its missiles, giving them a longer “no-escape zone.”
- Persistence: The YF-23 had a massive internal fuel capacity, giving it the legs to fight over the vast distances of the Pacific—a core requirement for today’s 6th-gen NGAD program.
Northrop wasn’t building a dogfighter; they were building an interceptor-ghost that killed from the shadows and vanished before the enemy even saw a blip on the glass.
The Engine Paradox: GE’s YF120 Powerplant
During the flight tests, the YF-23 “Gray Ghost” (PAV-2) was equipped with the General Electric YF120 variable-cycle engines. This was a masterpiece of engineering that could switch between a turbojet and a turbofan.
While the YF-22 eventually went with the more conservative Pratt & Whitney F119, the YF120 gave the YF-23 performance figures that still remain classified and legendary. It wasn’t just fast; it was efficiently fast. This “variable-cycle” technology is exactly what the Air Force is currently chasing for 6th-gen fighters through the Adaptive Engine Transition Program (AETP). Once again, the YF-23 was decades ahead of the curve.
Why Did It Lose? The “Showman” Factor
If the YF-23 was faster, stealthier, and had more range, why are we flying Raptors today?
It came down to optics. During the flight test program, Lockheed’s test pilots flew the YF-22 like they were at an airshow—pulling high-alpha maneuvers and firing missiles under high G-loads. Northrop, true to their “engineer-first” culture, flew a more conservative, data-driven test program. They proved the plane worked, but they didn’t “wow” the brass.
The Air Force also had scars from Northrop’s recent history with the B-2 Spirit’s cost overruns. Lockheed was seen as the “safer” manager, even if their airframe was slightly less “future-proof.”
The Final Approach: The Legacy of the Black Widow II
As we look toward the 2030s, the renders we see of 6th-generation fighters look remarkably like the YF-23. They have the same blended wings, the same lack of vertical tails, and the same emphasis on long-range stealth over turn-rate agility.
The YF-23 wasn’t a failure. It was a prophecy in titanium and carbon fiber. It was a jet designed for a war that hadn’t been invented yet. While the F-22 is undoubtedly the greatest air superiority fighter currently in service, the YF-23 remains the “Ghost in the Machine” that showed us where aviation was truly heading.
What do you think? If the Air Force had picked the YF-23, would we even need a 6th-gen fighter today, or was the F-22 the right choice for the time? Let’s talk about it in the hangar (comments section) below!
From the Hangar: A Piece of History
That’s a wrap on this incredible story. If you’re anything like me, diving into the history of icons like the Northrop YF-23 makes you want to see the machines up close.
For our readers, our friends at AirModels have a stunning collection of high-quality YF-23 Black Widow II Models. It’s the perfect place to find a detailed replica that does this legend justice.