Aviation Week has a photo gallery detailing the PGA engine developed to power the rockets that will air launched from Stratolaunch’s massive carrier aircraft. The engine’s details include:
- fuel-rich, staged-combustion liquid oxygen and hydrogen engine capable of generating 200,000 lb. of thrust
- three cores with single PGA engine each will power medium launch vehicle
- fully reusable Black Ice space plane powered by three PGAs; and,
- engine testing to begin at NASA Stennis in October.