The TQ-11 (, lit. ''Sky Lark 11'') is a

gas-generator cycle The gas-generator cycle is a power cycle of a pumped liquid bipropellant rocket engine. Part of the unburned propellant is burned in a gas generator (or preburner) and the resulting hot gas is used to power the propellant pumps before being exhau ...

rocket engine A rocket engine uses stored rocket propellants as the reaction mass for forming a high-speed propulsive jet of fluid, usually high-temperature gas. Rocket engines are reaction engines, producing thrust by ejecting mass rearward, in accordanc ...

burning liquid methane and liquid oxygen under development by

Landspace LandSpace Technology Corporation (doing business as LandSpace) is a Chinese private space launch provider based in Beijing. It was founded in 2015 by Zhang Changwu. LandSpace developed its first launch vehicle Zhuque-1, powered by solid-propel ...

. It will be used as the second stage

vernier engine A vernier thruster is a rocket engine used on a spacecraft for fine adjustments to the Orientation (geometry) , attitude or velocity of a spacecraft. Depending on the design of a craft's maneuvering and stability systems, it may simply be a sma ...

for Landspace's ZQ-2 rocket. The engine has been designed to produce of thrust in the vacuum.

History

Landspace completed the first engine hot firing test for TQ-11 on November 3, 2019, and the engine passed a 1500 second test in 2020. On December 14, 2022,

Zhuque-2 LandSpace Technology Corporation (doing business as LandSpace) is a Chinese private space launch provider based in Beijing. It was founded in 2015 by Zhang Changwu. LandSpace developed its first launch vehicle Zhuque-1, powered by solid-propel ...

completed its maiden flight. The TQ-11 engines used in the rocket's second stage failed, resulting in mission failure. LandSpace planned to upgrade the second stage with one TQ-15A engine, eliminating the need for a vernier engine. The failure of TQ-11 could force LandSpace to update the second stage quicker than anticipated.

References

Rocket engines of China Rocket engines using methane propellant Rocket engines using the gas-generator cycle {{Rocket-stub