The Terrier-Malemute launch vehicle is a high performance two-stage vehicle used for payloads weighing less than 400 pounds. The first stage booster consists of a Terrier MK 12 Mod 1 rocket motor with four 340 square inch fin panels arranged in a cruciform configuration. The Terrier booster has an overall diameter of 18 inches. For a payload weight of 200 pounds, the longitudinal acceleration during the boost phase is 26g's. The second stage propulsion unit is a Thiokol Malemute TU-758 rocket motor which is designed especially for high altitude research rocket applications. The external diameter of the Malemute is 16 inches. Credit: NASA/Wallops

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