What is the top speed of the Yak-141?

Question

What is the top speed of the Yak-141?

Answer 1

The Yak-41 passed mach 1 for the first time in 1989. The Yak-141 was a redesignated version for international record attempts. It's suggested that it may have been modified to reach higher speeds and altitudes, as were other record setters like a modified Su-27 and a modified F-15. The Yak-141 did in fact reach top speeds in excess of mach-1.5 and set 12 international records with a published top speed of mach 1.7 at altitude and mach 1.2 at sea level. The design was unsuccessful due to high production cost, maintenance difficulty, and the fact that vertical takeoff required use of afterburners which damaged runway surfaces. These problems led to the cancellation of the program, despite its potential. However, claims of performance matching or exceeding that of the MiG-29 may be exaggerated, as it's wing loading and power to weight ratio are inferior. The Yak-41/Yak141 was not the first supersonic VTOL aircraft. In fact, the first VTOL aircraft to achieve supersonic flight was the EWR VJ 101. It did so in test flights in the early 1960s .This was a potential replacement for the F-104s in German service but was cancelled after development difficulties. The first production supersonic VTOL aircraft will be the F-35B

Another note: Most similiar attempts at supersonic VTOL were also failures for similiar reasons. Similar designs are:

Dassault Mirage IIIV

Hawker Siddeley P.1154

Rockwell XFV-12

Answer 2

The Yak-141, the development prototype of the Yak-41, was an attempt by the Soviet Union to produce a supersonic VTOL aircraft. The program was initiated in 1975 as the Yak-141, a development of the Yakovlev Yak-38. The first conventional flight of the Yak-41 was on 9 March 1987, and the first hovering flight on 29 December 1989. The Yak-41M designation was adopted around 1991 to reflect a shift to a multi-role configuration.

-=General characteristics=-

Crew: one, pilot

Length: 18.30 m (60 ft 0 in)

Wingspan: 13.97 m (45 ft 10 in)

Height: 5.00 m (16 ft 5 in)

Wing area: 31.7 m² (341 ft²)

Empty weight: 11 650 kg (25,680 lb)

Loaded weight: kg (lb)

Max takeoff weight: 19 500 kg (43,000 lb)

Powerplant: 1× MNPK Soyuz R-79V-300 turbojet, 108 kN (24,300 lbf)

Powerplant: 2x RKBM RD-41 42 kN (9,300 lbf) thrust each)

-=Performance=-

Maximum speed: Mach 1.7

Range: 1400 km (870 statute miles)

Service ceiling 15 500 m (50,850 ft)

Rate of climb: m/s (ft/min)

Wing loading: kg/m² (lb/ft²)

-=Armament=-

1 x 30 mm GSh-301 cannon with 120 rounds

Four underwing and one fuselage hardpoints for 2 600 kg (5,500 lb) of external stores

Answer 3

Performance

    * Maximum speed: Mach 1.7

    * Range: 1400 km (870 statute miles)

    * Service ceiling 15 500 m (50,850 ft)

    * Rate of climb: m/s (ft/min)

    * Wing loading: kg/m² (lb/ft²)

General characteristics

    * Crew: one, pilot

    * Length: 18.30 m (60 ft 0 in)

    * Wingspan: 13.97 m (45 ft 10 in)

    * Height: 5.00 m (16 ft 5 in)

    * Wing area: 31.7 m² (341 ft²)

    * Empty weight: 11 650 kg (25,680 lb)

    * Loaded weight: kg (lb)

    * Max takeoff weight: 19 500 kg (43,000 lb)

    * Powerplant: 1× MNPK Soyuz R-79V-300 turbojet, 108 kN (24,300 lbf)

    * Powerplant: 2x RKBM RD-41 42 kN (9,300 lbf) thrust each)

Answer 4

Yak-141 Freestyle Specifications

Primary Function: Carrier Based Interceptor

Contractor: Yakovlev

Crew: One

Unit Cost: N/A

Powerplant

  One Kobchenko/Soyuz R-79-300 turbofan engine rated at 34,170lb for takeoff, two Rybinsk RD- 41 turbofan engines rated at 9,039lb for lift

Dimensions

Length: 60 ft 2 in

Wingspan: 33 ft 1.5 in (spread)

19 ft 4 in (folded)

Height: 16 ft 4 in

Weights

Empty: 25,684 lb

Maximum Takeoff: 34,833 lb vertical, 42,990 lb short

Performance

Speed: 1148.4 mph (Mach 1.8)

Ceiling: 49,000 ft

Range: 1306.8 mi

Armament

  One 30mm cannon, Alamo and Archer AAMs, bombs, and rockets





Yak-141 Freestyle Achievements

The Yak-141 is the world's first supersonic STOVL aircraft