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Yakolev Yak-141 Freestyle
Yakolev Yak-141 Freestyle

Role: Single-seat carrier-based V/STOL multi-purpose combat aircraft
DESIGN FEATURES: Multi-engine lift/thrust configuration as Yak-38, but twin fins widely separated on flat-sided tailbooms, extending well beyond nozzle of propulsion engine; inner surface of each tailboom protected by curved titanium heatshield; rectangular wedge engine air intake each side of fuselage; recirculation of jet efflux restricted by large door that hinges down forward of vectored main nozzle, and smaller doors between this and liftjets; shallow 'fence' forward of each fin root, as on Mig-29 but longer, probably housing chaff/flare dispensers; bulged wingtips for 'puffer-jet' stability control system.
FLYING CONTROLS: Triplex full-authority digital fly-by-wire control of aerodynamic surfaces and 'puffer-jets,' with inputs from inertial and area nav systems via nav computer and from air computer system, with provision for satellite navigation; all-moving horizontal tail surfaces; leading-flaps on wing.
STRUCTURE: Extensive use of aluminum/lithium; 26 percent by weight CFRP, including flaps, slats, leading- and trailing-edges, and tail surfaces; swept-back wings fold upward at mid-span for stowage; wing leading-edge extension (also CFRP) on side of each intake duct forward of wing root.
LANDING GEAR: Retractable tricycle type with single wheel on each unit; nosewheel retracts rearward; mainwheels, on trailing-link legs, retract forward into engine ducts. Brake chute housing on centerline above jet nozzle.
POWER PLANT: Primary power plant is Soyuz RD-79V-300 turbofan, 88.25 kN (19,840 lb st) dry, 152.0 kN (34,170 lb st) with afterburning; door beneath nozzle allows it to be vectored 65 degrees downward for short take-off, 95 degrees downward and forward for vertical landing. RD-79 lift thrust is approx 80 percent of cruise rating. Two RKBM Rybinsk RRD-41 liftjets, each 40.2 kN (9,040 lb st), inclined at 10 degrees from vertical immediately aft of cockpit in installation similar to Yak-38 liftjets, able to vector rearward to 24 degrees from vertical for STOL, and 2 degrees forward of vertical for braking; 'puffer-jet' stability controls at wingtips and nose; computerised engine control system. Conformal centreline 2,000 litre (528 US gallon, 440 Imp gallon) external fuel tank.
ACCOMMODATION: Pilot only, on Zvezda K-36 zero/zero ejection seat under blister canopy; flat bullet-proof windscreen; automatic ejection system for pilot in emergency during vertical and transition flight modes.
AVIONICS: Manual or automatic flight-control from take-off to landing, day and night, in all weathers; multi-mode fire control radar similar to that of MiG-29 with slightly smaller antenna, providing information to HUD and multi-function displays via computer that also receives input from IFF and stores management systems, with optional laser/TV target designator and helmet-mounted display.
ARMAMENT: One 30 mm gun, 120 rds; four underwing hardpoints for R-27 (NATO AA-10 'Alamo'), R-73 (AA-11 'Archer') or R-77 air-to-air missiles, anti-ship missiles Kh-31 A/P (AS-17 'Krypton') or Kh-25 (AS-12 'Kegler'), air-to-surface missiles, 500 kg bombs, rockets or 23 mm gun pods.
Aircraft Measures:
Length: 60 ft.
Height: 16 ft., 5 in.
Wingspan: 33ft., 1{3/4} in.
Loaded Weight: 42,990 lbs

Aircraft Performance:
Maximum Speed: mach 1.7
Service Ceiling: 49,200 ft.
Range:1305 miles