Sukhoi Su-57

https://en.wikipedia.org/wiki/Sukhoi_Su-57

The Sukhoi Su-57 (Russian: ????? ??-57) is the designation intended for a
stealth, single-seat, twin-engine jet multirole fighter aircraft designed for
air superiority and attack operations. The aircraft is the product of the PAK FA
, a fifth-generation fighter programme of the Russian Air Force. Sukhoi's
internal name for the aircraft is T-50. The Su-57 will be thefirst aircraft in
Russian military service to use stealth technology. The fighter is planned to
have supercruise, stealth, supermaneuverability and advanced avionics to
overcome the prior generation fighter aircraft as well as ground and maritime
defences.

The fighter is intended to succeed the MiG-29 and Su-27 in the Russian Air Force
and serve as the basis for the Fifth Generation Fighter Aircraft (FGFA) being
co-developed by Sukhoi and Hindustan Aeronautics Limited (HAL) for the Indian
Air Force. The prototype first flew on 29 January 2010 and deliveries of
production aircraft to the Russian Air Force are to begin in 2018. The
prototypes and initial production batch are to be delivered with a highly
upgraded variant of the AL-31F used by the Su-27 family as interim engines while
a new clean-sheet design power-plant is currently under development. The
aircraft is expected to have a service life of up to 35 years.

The Su-57 will be a fifth generation multirole fighter aircraft and the first
operational stealth aircraft for the Russian Air Force. Although most
information is classified, sources within the Sukhoi company and Defense
Ministry have openly stated that the aircraft is to be stealthy,
supermaneuverable, have supercruise capability, incorporate substantial amounts
of composite materials, and possess advanced avionics such as active phased
array radar and sensor fusion.

The Su-57 has a blended wing body fuselage and incorporates all-moving
horizontal and vertical stabilizers; the vertical stabilizers toe inwards to
serve as the aircraft's airbrake. The aircraft incorporates thrust vectoring and
has adjustable leading edge vortex controllers (LEVCONs) designed to control
vortices generated by the leading edge root extensions, and can
provide trim and improve high angle of attack behaviour, including a quick stall
recovery if the thrust vectoring system fails. The advanced flight control
system and thrust vectoring nozzles make the aircraft departure resistant and
highly maneuverable in both pitch and yaw, enabling the aircraft to perform very
high angles of attack maneuvers such as the Pugachev's Cobra and the Bell
maneuver, along with doing flat rotations with little altitude loss. The
aircraft's high cruising speed and normal operating altitude is also expected to
give it a significant kinematic advantage over prior generations of aircraft.

Role
Stealth air superiority fighter

National origin
Russia

Manufacturer
Sukhoi

First flight
29 January 2010

Introduction
2019 (planned)

Status
Final flight testing/pre-production

Primary users
Russian Air Force
Russian Navy

Produced
2009–present

Number built
9 flyable prototypes

Program cost
US$8–10 billion (est.)

Unit cost
T-50: US$50 million

Variants
Sukhoi/HAL FGFA

In December 2014, the Russian Air Force planned to receive 55 fighters by 2020.
Yuri Borisov, Russia's deputy minister of defence for armaments stated in 2015
that the Air Force will slow production and reduce its initial order to 12
fighters and retain large fleets of fourth-generation fighters due to the
nation's economy.

Russian Air Force Commander-in-Chief Viktor Bondarev, stated that the fighter is
to enter serial production in 2017, after all trials are completed. In 2017,
Russian deputy defence minister Yuri Borisov stated that the Su-57 will most
likely enter service in 2018, due to implementation of more advanced engines,
and further testing. He also stated that it will be part of new 2018-2025 state
armament programme. Actual number of aircraft to be delivered is yet unknown.

Specifications (T-50)

General characteristics
Crew: 1
Length: 19.8 m (65 ft)
Wingspan: 13.95 m (45 ft 10 in)
Height: 4.74 m (15 ft 7 in)
Wing area: 78.8 m² (848.1 ft²)
Empty weight: 18,000 kg (39,680 lb)
Loaded weight: 25,000 kg (55,115 lb) typical mission weight, 29,270 kg (64,530
lb) at full load
Max. takeoff weight: 35,000 kg (77,160 lb)
Fuel capacity: 10,300 kg (22,700 lb)
Powerplant: 2 × Saturn AL-41F1 for initial production, izdeliye 30 for later
production turbofans Dry thrust: 93.1 kN / 108

kN for supercruise (21,000 lbf / 24,300 lbf for supercruise) each
Thrust with afterburner: 147 kN / 178 kN (33,067 lbf / 40,016 lbf) each

Performance
Maximum speed:
At altitude: Mach 2 (2,140 km/h; 1,320 mph)
Supercruise: Mach 1.6 (1,700 km/h; 1,060 mph)
Range: 3,500 km (2,175 mi; 1,890 nmi) subsonic
1,500 km (930 mi; 810 nmi) supersonic
Service ceiling: 20,000 m (65,000 ft)
Wing loading: 317–444 kg/m² (65–91 lb/ft²)
Thrust/weight:
AL-41F1: 1.02 (1.19 at typical mission weight)
izdeliye 30: 1.16 (1.36 at typical mission weight)
Maximum g-load: +9 g
Armament
Guns: 1 × 30 mm Gryazev-Shipunov GSh-301 autocannon in right LEVCON root
Hardpoints: 12 hardpoints (6 × internal, 6 × external) and provisions to carry
combinations of: Missiles:
Air-to-air missiles: 4 × RVV-MD
2 × R-73
Air-to-surface missiles: 4 × Kh-38ME
Anti-ship missiles: 2 × Kh-35E
Anti-radiation missiles: 4 × Kh-58UShKE

Avionics

Sh121 multifunctional integrated radio electronic system (MIRES) Byelka radar
N036-1-01: Frontal X-band active electronically
scanned array (AESA) radar
N036B-1-01: Cheek X-band AESA radars for increased angular coverage
N036L-1-01: Slat L-band arrays for IFF
L402 Himalayas electronic countermeasure suite
101KS Atoll electro-optical targeting system 101KS-O: Laser Directional Infrared
Counter Measures
101KS-V: Infra-red search and track
101KS-U: Ultraviolet missile approach warning system
101KS-N: Targeting pod




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