Hello comrades!

I'm happy to say it's first replica of this aircraft in this website!

Let me introduce you this fighter:

Yakovlev Yak-140

The Yakovlev Yak-140 was a Soviet prototype lightweight supersonic fighter developed during the 1950s. The prototype was completed in 1954, but it was denied authorization to enter flight testing and the program was cancelled in 1956.

The Yak-140 was developed around the Mikulin AM-11 turbojet (rated at 40 kN (9,000 lbf) thrust dry and 50 kN (11,000 lbf) with afterburner) to meet a specification issued in 1953 requiring a supersonic fighter with a maximum speed of 1,650–1,750 km/h (1,030–1,090 mph) and a range of 1,800 km (1,100 mi). It was to be armed with three 30 mm (1.2 in) cannon with 75 rounds per gun and was to be capable of carrying air-to-ground rockets as well as 200 kg (440 lb) of bombs. Its fully loaded weight was to be 4,850 kg (10,690 lb) and it was to be ready to be submitted for State acceptance trials in March 1955.

The fighter had a circular-section semi-monocoque fuselage with a nose air intake. A range-only radar was fitted in the conical inlet cone of the air intake. The wings had a sweep angle of 55° at quarterchord. Two wing fences were fitted on the upper surface of each wing. The horizontal stabilizer was midway down the rear fuselage and two air brakes were fitted on its underside. The cockpit canopy was faired into the spine that ran the length of the top of the fuselage. The tandem landing gear had a single wheel on the forward unit and twin wheels on the main unit with outrigger struts that retracted aft into wingtip fairings.

The aircraft's State acceptance trials were delayed until the first quarter of 1956 for lack of a flight-ready AM-11 engine, but it had to be adapted to use a less powerful Mikulin AM-9D engine with only 26 kN (5,800 lbf) of dry thrust. The gun armament was reduced to only two 23 mm (0.91 in) Nudelman-Rikhter NR-23 guns with 75 rounds per gun in compensation, but the estimated speed dropped by about 400 km/h (250 mph) regardless. This was deemed to be acceptable as it sufficed to begin flight testing.

The prototype was completed in December 1954 and it passed all the necessary ground tests by 10 February 1955 when it was cleared to begin flight trials. However, the Ministerstvo Aviatsionnoy Promyshlennosti (Ministry of Aviation Industry (MAP)) denied Yakovlev authorization to begin flight tests as it favored competing designs from Sukhoi and Mikoyan-Gurevich. A Council of Ministers directive was issued on 28 March 1956 to terminate the program and the corresponding MAP order followed on 6 April.

Source: Wikipedia

Korean War experience led by July 1953 to the issue of a VVS requirement for a fighter having the greatest possible performance, achieved by the highest possible ratio of thrust to weight. In the USA Lockheed sought the same objective in the F-104. Whereas the American aircraft had an extraordinarily high wing loading, so that its manoeuvrability was totally uncompetitive, care was taken in the VVS demand to call for 'good manoeuvrability in both the vertical and horizontal planes'.

Accordingly Yakovlev designed the Yak-140 to have not only the lightest possible airframe but also the largest possible wing consistent with this objective. This meant that level speed would be perhaps 150-200km/h lower than the maximum possible, but that the fighter would be far more likely to win in close manoeuvring combat. Design began immediately, and because the aircraft was so similar to the Yak-50 progress was swift.

In February 1955, immediately before flight testing of the Yak-140 began, the Minister of Aircraft Production, P V Dement'yev, announced that the project had no future, because it would be the rival MiG design that would be ordered. No explanation has so far been discovered. It appears that the MAP never issued any actual instruction ordering cancellation, but faced with the Minister's statement, Yakovlev had no option but to halt all work on the Yak-140. He was never again to produce a fighter, apart from jet-lift aircraft for the Navy.

Source: Aviastar

Instructions:

Activate 8: Engine

Trim: Flaps and trim

Other controls are default.

Note:

This aircraft is hard to fly because of its wing area. It's wing area is high and it cause fast pitching. Therefore you should use trim to prevent unwanted pitching during flight.

You should add to trim (between 0 and +1) while adding to throttle.

Hope you like it and thank you for your supports!