ALERNATES 2 -- Tier VII-X
Sukhoi Su-5 -- same powerplant as Mikoyan I-250
Sukhoi Su-7R -- rocket in tail
Sukhoi Su-11
Lavochkin 150 (09/1946) -- (Buttler & Gordon, 16-18)
Lavochkin 152 (12/1946) -- (Buttler & Gordon, 18)
Lavochkin 156 (03/1947) -- tested RD-10 with reheat; terminated on or after 01/1948. (Buttler & Gordon, 19)
Lavochkin 168 (04/1948) -- developed in parallel to La 160; Rolls-Royce Nene II 2,270 kgp (5,000 lbst) in fuselage, 37-degree 20' wing sweep, pressurized cockpit, airbrakes on rear fuselage sides, ejection seat, tricycle landing gear, 1x37mm N-37 and 2x23mm NR-23; prototype construction began summer 1947; first flight 04/22/1948 (Gordon, 13-18); flight testing until 02/1949 (Buttler & Gordon, 35)
Lavochkin 174TK (01/1948) -- TK = tokoye krylo = "thin wing"; a development of 156; already behind La-160 when it flew; prototype only. (Buttler & Gordon, 20)
Lavochkin 176 (late 1948) -- transonic research aircraft, 45-degree wing sweep; Mach 1.02 in a shallow dive 12/26/1948; first Soviet aircraft through sound barrier. (Buttler & Gordon, 36)
Yak-23 -- from Yak 17, RD-500 (Derwent V), thick unswept wings, unpressurized cockpit, 2x23mm; 925 km/h (Gordon, 5); 313 built; production ultimately terminated in favor of MiG-15 (Gordon, 166); used by Czechoslovakia as S-101; Bulgaria, Romania, Albania, North Korea, Poland; one was evaluated in United States at Wright-Patterson AFB (Gordon, 169-170)
Yak-25M -- patrol fighter/interceptor, 2x37mm, ceiling ~15,000m (49,200 ft), subsonic, served until mid-1950's (Gordon, 3)
MiG I-310 (12/1946) -- first flight 12/30/1946, adopted for production as MiG-15 (Buttler & Gordon, 39)
MiG-15bisP (04/1949) -- first flight 04/23/1949, VK-1 engine, large radome fitted to upper lip of the intake, Toriy (Thorium) radar, did not enter service because radar was unreliable (Buttler & Gordon, 39)
MiG-15bis (07/1949) -- VK-1 engine, first flight 07/22/1949. (Buttler & Gordon, 39)
Baade EF 137 (design 09/1946) -- 49-degree sweep leading edge, variable sweep trailing edge, thick wing, 2x Jumo 004 mounted in double nacelle beneath rear fuselage fed by a large single ventral intake; massive cannon in nose, two more either side of cockpit; estimated performance 4.75 minutes to 6,000 m (19,685 ft) and 13.75 minutes to 10,000 m (32,808 ft), rate of climb at sea level 27 m/sec, and 15.7 m/sec @ 6,000 m. (Buttler & Gordon, 34-35)
Edited by J311yfish, 21 March 2022 - 12:57 AM.