Miscellaneous items at the Deutsches Museum

Minature pulse jet is about 2 feet long.

A fine selection of model aeroengines. I recognised about a dozen from my youthful plane building activities.

Bendix Aviation Corp, Usa 1933.

Bendix NA-Y5G3 Aeroengine carburettor. Developed for radial aeroengines in the 600 to 1000 hp range and used for the BMW 132 radial engine. This carburettor has 2 barrels next to each other with 2 fuel sumps with are linked by a tube between the two. The arrangement of the sumps in front & behind the barrels ensures that the correct mixture is available during climbing, diving or level flight.

Sum Vergassergesellschaft, Berlin 1935.

Sum 698 Aeroengine carburettor. This type of carburettor allows the engine to be over-driven without leaning of the mixture. To this end it is fitted with an extra fuel sump which is only accessed once a specific engine rpm has been reached. Instead of a butterfly valve the second barrel has a slide which, once open, allows the air to flow into the carburettor unimpeded.