Noun
APCP (uncountable)
Initialism of ammonium perchlorate composite propellant.
A typical, well-designed ammonium perchlorate composite propellant (APCP) first-stage motor may have a vacuum specific impulse (Isp) as high as 285.6 seconds (Titan IVB SRMU). Source: Internet
Composite propellants are often either ammonium nitrate -based (ANCP) or ammonium perchlorate -based (APCP). Source: Internet
High-energy composite (HEC) propellants Typical HEC propellants start with a standard composite propellant mixture (such as APCP) and add a high-energy explosive to the mix. Source: Internet
The vast majority of amateur-built rocket motors utilize a composite propellant, most commonly APCP and candy rocket propellant. Source: Internet