Propellant

Solid (APCP)

Also known as Solid propellant, APCP

Rockets

Overview

A cast solid propellant of ammonium-perchlorate oxidizer, aluminium fuel, and a rubber binder. High thrust and simplicity, but not throttleable or shut-down-able once lit; used in the Shuttle/SLS boosters, Vega, and many strap-on boosters.

Knowledge connections

Propellant ofSpace Shuttle Solid Rocket Booster
Propellant ofSLS Solid Rocket Booster
Propellant ofAriane 5 solid boosters (EAP)

Sources

The primary and reference sources this topic draws on.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.