Thirty-one X-9 rockets were delivered, flying from April 1949 to January 1953. The program was used to gather aerodynamic and stability data, and to test guidance and propulsion systems for the RASCAL.[1]
None of the missiles survived testing. The only known remaining fragment of an X-9 is part of a vertical stabilizer, at the Larry Bell Museum in Mentone, Indiana.[2]
^Yenne, Bill (2018). A Complete History of U.S. Cruise Missiles. Forest Lake, MN: Specialty Press. p. 61. ISBN978-1-58007-256-4.
^Jenkins, Dennis R.; Landis, Tony; Miller, Jay. "AMERICAN X-VEHICLES Centennial of Flight Edition SP-2003-4531 An Inventory—X-1 to X-50" (PDF). p. 15. Archived from the original (PDF) on 2020-04-25. Retrieved 5 December 2021.