This is an unflown Mark 4 reentry vehicle (RV) used on U.S. Air Force Titan I and Atlas E/F intercontinental ballistic missiles that were deployed in the early 1960s. It carried a W-38 nuclear warhead with a yield of about 3.75 megatons. Made by AVCO Corporation, the Mark 4 RV has an aluminum inner frame covered by an unknown ablative material that protected it during reentry into the Earth's atmosphere. Because R&D versions of reentry vehicles were commonly painted white, this Mark 4 RV was in all likelihood a test version that was never flown. The donor is unknown.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
United States of America
CRAFT-Missile & Rocket Parts
Avco Corportation
3-D (Blue Transport Support Ring): 137.2 × 137.2 × 27.9cm (4 ft. 6 in. × 4 ft. 6 in. × 11 in.)
3-D (Transport Ring Support Strut): 74.9 × 5.7 × 5.7cm (2 ft. 5 1/2 in. × 2 1/4 in. × 2 1/4 in.)
Metal, and phenolic resin
A19660029002
Unknown donor
National Air and Space Museum
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