The Yakovlev Yak-1000 was a Soviet supersonic technology demonstrator intended to evaluate the aerodynamic layout and field performance of the cropped delta wing discussed in captured German documents in combination with the new Lyulka AL-5 turbojet.

A June 1950 Council of Ministers directive ordered Yakovlev to develop a supersonic fighter that used the 50 kN (11,000 lbf) Lyul'ka AL-5 axial compressor turbojet.

Based on a recommendation from one of TsAGI aerodynamicists, Yakovlev was directed to use the rhomboid or cropped delta-shaped wing covered in captured German research.

On the following day it was taxiing at speed up to 250 km/h (160 mph), but was blown off the runway when a strong crosswind caused the aircraft to bank which compressed the strut on the opposite side.

[6] The Yak-1000's design and estimated performance ended up being recognized by Alexander Yakovlevich Bereznyak of MKB Raduga, who incorporated the smaller profile and small delta-wing layout into a ship-launched missile proposal that later became the P-15 Termit.

[7] The initial P-15 prototype featured a liquid-fuel rocket system and radar that replaced the air-breathing jet engine inlet and exhaust, but it carried over a very similar wing and fuselage configuration.