The Schmidding SG 34 (109-533) was a German

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

-era solid-fuelled rocket motor. Four SG 34s were used on the

Bachem Ba 349 Natter The Bachem Ba 349 Natter ( en, Colubridae, Colubrid, grass-snake) was a World War II German point-defence rocket-powered interceptor aircraft, interceptor, which was to be used in a very similar way to a manned surface-to-air missile. After a ve ...

to provide extra thrust for launching.

Design and development

The

was originally designed with Schmidding SR 34 rocket boosters however these were upgraded to the more powerful 1,200kg thrust SG 34s in December of 1944. The SG 34 was manufactured by Schmidding Werke at the company's factory in

Děčín Děčín (; german: Tetschen, 1942–1945: ''Tetschen–Bodenbach'') is a city in the Ústí nad Labem Region of the Czech Republic. It has about 47,000 inhabitants. It is the 7th largest municipality in the country by area. Administrative parts D ...

located in the modern day

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

. Four SG 34 solid fuel rocket boosters were fitted to the prototype Bachem Natter. The booter rockets were designed to augment the thrust from the Natter's single

Walter HWK 509 The Walter HWK 109-509 was a German liquid-fuel bipropellant rocket engine that powered the Messerschmitt Me 163 Komet and Bachem Ba 349 aircraft. It was produced by Hellmuth Walter Kommanditgesellschaft (HWK) commencing in 1943, with licensed p ...

engine and were most likely released by explosive shearing bolts shortly after takeoff.

References

{{RLM jet/rocket designations Bachem aircraft Aircraft rocket engines JATO