The FG-46 (a.k.a. EPKM and SpaB-170) is a

Chinese Chinese can refer to: * Something related to China * Chinese people, people of Chinese nationality, citizenship, and/or ethnicity **''Zhonghua minzu'', the supra-ethnic concept of the Chinese nation ** List of ethnic groups in China, people of v ...

solid Solid is one of the four fundamental states of matter (the others being liquid, gas, and plasma). The molecules in a solid are closely packed together and contain the least amount of kinetic energy. A solid is characterized by structura ...

rocket motor 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 accordance ...

burning

HTPB Hydroxyl-terminated polybutadiene (HTPB) is an oligomer of butadiene terminated at each end with a hydroxyl functional group. It reacts with isocyanates to form polyurethane polymers. HTPB is a translucent liquid with a color similar to wax paper ...

. It was developed by

China Hexi Chemical and Machinery Corporation China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

(also known as the 6th Academy of

CASIC The China Aerospace Science & Industry Corporation Limited (CASIC) is a Chinese state-owned enterprise that designs, develops and manufactures a range of spacecraft, launch vehicles, strategic and tactical missile systems, and ground equipmen ...

) for use in the

Long March 2E The Long March 2E, also known as the Chang Zheng 2E, CZ-2E and LM-2E, was a Chinese orbital carrier rocket from the Long March 2 family. The Long March 2E was a three-stage carrier rocket that was designed to launch commercial communications sat ...

GTO GTO may refer to: Entertainment * '' Great Teacher Onizuka'', a manga, anime, live-action series, and film * GameTable Online, a game portal Music bands * GTO (band), an Australian band * The GTOs, an American girl group * Giraffe Tongue Orche ...

missions. It first flew as a prototype SPTS-M14 on July 16, 1990 on the

Badr A Badr (Arabic: بدر) as a given name below is an Arabic masculine and feminine name given to the "full moon on its fourteenth night" or the ecclesiastical full moon. Badr may refer to: .and it is also one of the oldest and rarest names in the Arabi ...

mission. It had its first commercial mission orbiting the

AsiaSat 2 AsiaSat 2 was a Hong Kong communications satellite, which was owned, and was initially operated, by the Hong Kong based Asia Satellite Telecommunications Company. It was positioned in geostationary orbit at a longitude of 17° East of the Gr ...

on November 28, 1995 and exactly one month later, on December 28 its second and last mission for

EchoStar 1 EchoStar Corporation is an American company, a worldwide provider of satellite communication and Internet services through its Hughes Network Systems and EchoStar Satellite Services business segments. EchoStar is based out of unincorporated Arapa ...

. It has a total nominal mass of , of which is propellant load and its burn out mass is . It has an average thrust of with a

specific impulse Specific impulse (usually abbreviated ) is a measure of how efficiently a reaction mass engine (a rocket using propellant or a jet engine using fuel) creates thrust. For engines whose reaction mass is only the fuel they carry, specific impulse is ...

of 292 seconds burning for 87 seconds, with a total impulse of . It is spin stabilized at 40

rpm Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or with the notation min−1) is a unit of rotational speed or rotational frequency for rotating machines. Standards ISO 80000-3:2019 defines a unit of rotation as the dimension ...

and the propellant mass can be reduced by up to eight months before launch or up to on the launch site.

References

Rocket engines of China Solid-fuel rockets {{rocket-stub