Alpha was the first engine designed, built, and tested by SRT during its first year in existence. Many of the sub-systems tested on this design were optimized and incorporated into later designs. Alpha featured a light-weight composite tank from Luxfer (tested with aluminum tanks), chain-and-sprocket actuated ball valve, and cubic graphite nozzle. All fittings are 304/316 Stainless Steel, while the injector and combustion chamber are made from 6061-T6 Aluminum.
Pressurization Method: Self-pressurized
Injection Method: Impinging Injection; Axial Injection
Operating Peak Thrust: 350 lbf
Operating Impulse: 2598 lbf-sec
Hydrostatic Tests: 5
Cold Flow Tests: 1
Static Engine Tests: 2