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Shown here is the fuel injector for the larger chamber of the two-chamber, liquid-fuel engine that powered the Navy's surface-to-surface Lark missile. Total thrust of the engine, which burned red fuming nitric acid and aniline, reached 620 pounds. Like the combustion chamber, the injector used regenerative cooling technology, visible on the inside walls of this cutaway. Pioneered by Reaction Motors in the late 1930s, regenerative cooling gained wider acceptance during and after World War II as Reaction Motors commercialized the technology.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Country of Origin United States of America Type PROPULSION-Components (Engine Parts) Manufacturer Reaction Motors, Inc.
 Dimensions Overall: 12.1 x 7.9 x 4.4cm (4 3/4in. x 3 1/8in. x 1 3/4in.)
length, body, 4.25 inches; diameter, 2 inches
 Materials Stainless steel
 Inventory Number A19990027001 Credit Line Found in collection. Donor unknown at this time. Found on NASM premises. Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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