BMW 109-558
The BMW 109-558 is a liquid fuelled sustainer rocket motor developed by BMW at their Bruckmühl facility, in Germany during the Second World War.
The 109-558 was designed as a sustainer rocket for the Henschel Hs 117 surface-to-air missile. It was tubular, measuring diameter and about long overall. The engine had a compressed air tank to pressurise tanks for the R-Stoff fuel and SV-Stoff oxidiser. SV-Stoff was used to cool the combustion chamber.
The 109-558 was capable of propelling an Hs 117 at, with throttle control by sliding valves in the exhaust nozzle, operated by a servomotor controlled by a Mach sensor. Production of the 109-558 took forty to sixty hours using a very high proportion of slave labour.Applications
