| | Top 5 fifth gen. Fighter aircraft
5.Sukhoi/HAL FGFA
Role :Stealth Air superiority fighter Multirole combat aircraft Air to ship
National origin: India
Manufacturer: Hindustan Aeronautics Limited
Designer: India/Russia
Introduction :2017
Status: Under development
Primary user: Indian Air Force
Program cost: US$ 8-10 billion[4][5][6]
Unit cost: US$100 million (est.)[7]
Developed from: Sukhoi PAK FA
General characteristics
Crew: 2 (pilot)
Length: 20.0 m (65 ft 6 in)
Wingspan: 14.2 m (46 ft 7 in)
Height: 6.05 m (19 ft 10 in)
Wing area: 78.8 m² (848 ft²)
Empty weight: 18,500 kg (40,786 lb)
Loaded weight: 26,000 kg (57,320 lb)
Useful load: 7,500 kg (16,535 lb)
Max takeoff weight: 37,000 kg (81,571 lb)
Powerplant: 2 × Saturn-Lyulka AL-41F turbofan
Dry thrust: 96.1 kN (9,800 kgf, 21,605 lbf) each
Thrust with afterburner: 152 kN (15,500 kgf, 34,172 lbf) each
Performance
Maximum speed: 2,100 km/h (Mach 2) [25] (1,305 mph
g-limits: (10-11 g)
Cruise speed: 1,300 km/h (800 mph)
Combat radius: 1,500 km [26] ()
Ferry range: 5,500 km (3,400 mi)
Service ceiling: 20,000 m (65,617 ft)
Rate of climb: 350 m/s (68,898 ft/min)
Wing loading: 330(normal) - 470(maximum) kg/m2 (67(normal) - 96(maximum) lb/ft2)
Thrust/weight: 1.19 [25]
Runway: 350 m (1,148 ft)
Endurance: 3.3 hrs (198 mins)
Armament
Guns: 2× 30 mm internal cannon
Hardpoints: 16 total, 8 internal, 8 on wings.
Avionics
Radar: N050(?)BRLS AESA/PESA Radar (Enhancement of IRBIS-E) on SU-35
Frequency: X (8 - 12 GHz)
Diameter: 0.7 m (2 ft 4 in)
Targets: 32 tracked, 8 engaged
Range: > 400 km (248 mi)
EPR: 3 m² (32.3 ft²) at 400 km (248 mi)
RCS: 3 m ² to 400 km, 1 m ² to 300 km, 0.5 m ² to 240 km, 0.1m ² to 165 km, 0.01M ² to 90 km.
Azimuth: 240 ° (± 120 °)
Power: 5,000 W
Weight: 65 to 80 kg (143 to 176 lb)
4.Lockheed Martin F-35 Lightning II
Role: Stealth multirole fighter
National origin: United States
Manufacturer: Lockheed Martin Aeronautics
First flight :15 December 2006
Introduction: 2016–2018
Status: In initial production, in U.S. service as a training aircraft
Produced 2006–present
Number built: 13 flight-test aircraft[N 1]
Unit cost F-35A: US$122 million (flyaway cost, 2011)[7]
F-35B: US$150M (avg. cost, 2011)[8]
F-35C: US$139.5M (avg. cost, 2011)[8][9]
Note: Average costs excludes development cost[8]
F-35A weapons system unit cost is US$183.5M (FY 2011)[7]
Developed: from Lockheed Martin X-35
Engines
The F-35's main engine is the Pratt & Whitney F135. The General Electric/Rolls-Royce F136 has been under development as an alternative engine.[95] The F135/F136 engines are not designed to supercruise in the F-35.[96] The STOVL versions of both power plants use the Rolls-Royce LiftSystem, patented by Lockheed Martin and developed and built by Rolls-Royce. This system is more like the Russian Yak-141 and German VJ 101D/E than the preceding generation of STOVL designs,[97] such as the Harrier Jump Jet in which all of the lifting air went through the main fan of the Rolls-Royce Pegasus engine.[98]
The Lift System is composed of a lift fan, drive shaft, two roll posts and a "Three Bearing Swivel Module" (3BSM).[99] The 3BSM is a thrust vectoring nozzle which allows the main engine exhaust to be deflected downward at the tail of the aircraft. The lift fan is near the front of the aircraft and provides a counter-balancing thrust using two counter-rotating blisks.[100] It is powered by the engine's low-pressure (LP) turbine via a drive shaft and gearbox. Roll control during slow flight is achieved by diverting unheated engine bypass air through wing mounted thrust nozzles called Roll Posts.[101][102] Like lift engines, the added lift fan machinery increases payload capacity during vertical flight, but is dead weight during horizontal flight. The cool exhaust of the fan also reduces the amount of hot, high-velocity air that is projected downward during vertical take off, which can damage runways and aircraft carrier decks.[citation needed]
To date, F136 funding has come at the expense of other parts of the program, reducing the number of aircraft built and increasing their costs.[103] The F136 team has claimed that their engine has a greater temperature margin which may prove critical for VTOL operations in hot, high altitude conditions.[104]
Pratt & Whitney is also testing higher thrust versions of the F135, partly in response to GE's claims that the F136 is capable of producing more thrust than the 43,000 lbf (190 kN) supplied by early F135s. The F135 has demonstrated a maximum thrust of over 50,000 lbf (220 kN) during testing.[105] The F-35's Pratt & Whitney F135 is the most powerful engine ever installed in a fighter aircraft.[106]
The F135 is the second (radar) stealthy afterburning jet engine and like the Pratt & Whitney F119 from which it was derived, has suffered from pressure pulsations in the afterburner at low altitude and high speed or "screech". In both cases this problem was fixed during development of the fighter program.[107]
Turbine bearing health in the engine will be monitored with thermoelectric powered wireless sensors.
|
