⭕ This is a true liquid-propellant rocket engine with turbopump and regenerative cooling producing up to 7700 lbf of thrust and weighing only 105 lbs.

This rocket engine was designed by Soviet engineers during Cold War with the purpose of pushing the famous S-75 / SA-2 Guideline Surface-to-Air Missile. In 1960, Gary Powers U-2 was shot down by one of these missiles. . .

This is the latest version of the rocket engine for this missile.

Maximum thrust : 34.3 kN / 3500 kgf / 7700 lbf

(Thrust level is adjustable between 2,075 kgf and 3,500 kgf (4,580 lbf and 7,700 lbf))

Mass : 47.5 kg (105 lbs)

Height : 100 cm (3.3 ft)

The turbine driving the two pumps (oxidizer pump and fuel pump) produces approximately 200 horsepower. . .