Okay, found the books. They only have stats for the "wimpy" version of Yukikaze, before she took the body of Mab and became the Queen of the Wind.
Chohei Kambayashi : Yukikaze / 2010 for English translation, 1984 for Japanese original. "Good Luck, Yukikaze" is the second book, released in 1999 for the Japanese version and 2011 for English. "Unbroken Arrow, Yukikaze" was released in Japanese in 2009, while "Aggressors, Yukikaze" was released in Japanese in 2022. Neither Unbroken Arrow nor Aggressors have been translated into English yet.
Fairy Air Force (a multinational/international fighting force on another planet):
FFR-31MR "Super Sylph", Personal name "Yukikaze"
Crew: 2, Pilot and Electronic Warfare Officer
Length: 64 ft 11 in (19.8 m)
Wingspan: 44 ft 3 in (13.5 m)
Height: 20 ft 4 in (6.2 m)
Empty Weight: 26,015 lb (11.8 t)
Loaded Weight: 54,010 lb (24.5 t)
Maximum Takeoff Weight: 83,775 lb (38.0 t)
Has mission adaptive wings to change shape as necessary for the flight conditions, in a clipped delta shape.
Engines: 2x FNX-5011-B; 21,605 lbf (9.8 t) military power, 31,967 lbf (14.5 t) full afterburner, 49,604 lbf (22.5 t) MR power (operating as a hydrogen ramjet). MR mode is not available below 18km altitude and M2 in Fairy atmosphere. (In the book, Yukikaze was still the Super Sylph when she tested the Phoenix MkXI engines in Earth's atmosphere, and engaged MR mode while close to sea level while chasing down a JAM attempting to sink the carrier guarding the hyperspace tunnel exit on Antarctica.)
Inlets are a 2D variable design.
Exhaust nozzles are 2D thrust vectoring, but only actively direct thrust when in Dogfight mode. Otherwise they operate as standard convergent-divergent nozzles.
Armament: 20mm Vulcan cannon in the nose, multiple short-, medium-, and long-ranged AAMs for self protection. (Armament varies, I haven't found a good max loadout for the FFR-31) I have seen/read at least 6x missiles carried, and I believe I've read 8 in a 4+4 combo of short and medium ranged missiles. It is also capable of carrying air-to-surface missiles and precision guided bombs.
One of 13 aircraft used by the Special Air Force Vth squadron for high altitude recon. Usually flies tens of thousands of feet above the action to record Fairy AF and JAM (enemy) actions and carry the results back to base. No matter how badly the other FAF planes are getting mauled, the "Reapers" of the Boomerang Squadron will only fight to escape and return their intel to base. At the start of the novels, no Boomerang Squadron aircraft had ever been shot down.
To do the recon job, the Super Sylphs carry a Tactical Air Recon Pod System which holds a variety of cameras and other sensors. Despite the heavy use of nonsentient AI in the weapons and aircraft central computer, the TARPS does not have an AI itself.
"Super Sylphs" are heavily modified versions of the "Sylphid" main heavy fighter used by the FAF. Compared to the Sylphid, the Super Sylph's ventral fin is a different shape, favoring high speeds in a straight line over maneuverability. Both aircraft have negative static stability, and when in Dogfight mode with Vmax selected, all engine limiters as well as Flight Control System g-limiters are disengaged. Yukikaze is recorded to have exceeded 12.5 gees in a dogfight while under the control of the craft's Central Computer. Without damage to the airframe.
The main radar is powerful enough to cause interference to an aircraft carrier's air-search radar.
Below: FFR-31MR "Super Sylph"
Compare with the combat version of the FFR-31:
The FFR-31 has an internal weapons bay with 7 hardpoints, plus two hardpoints under the wings for drop tanks.
======
I'm looking for stats for the FRX-00 (100th fighter type) Mave. Mave is mostly the same size and has the same engines, but is capable of even more extreme maneuvers. While on a test flight, Mave was engaged by JAM fighters and exceeded 16 gees, killing the test pilot. The central computer then flew the aircraft back to base.
