Sparoair II on F4D
|Manufacturer||Naval Missile Center|
|Country of origin||United States|
|Diameter||200 mm (8 in)|
|Mass||143 kg (315 lb)|
|Payload to 120 km (65 nmi)||18 kg (40 lb)|
|Launch sites||Point Mugu|
|Last flight||8 July 1965|
Sparoair was a family of air-launched sounding rockets developed by the United States Navy in the late 1950s and early 1960s. Based on the Sparrow air-to-air missile, three versions of the rocket were developed; although some launches were successful, the system did not enter operational service.
Sparoair I and II
Sparoair was developed by the Naval Missile Center, as a two-stage development of the Sparrow III air-to-air missile. Propelled by two Sparrow rocket motors mounted in tandem, the Sparoair could be launched from F3H (F-3) Demon and F4D (F-6) Skyray fighter aircraft, and was capable of lifting a 40 pounds (18 kg) payload to an apogee of 65 nautical miles (120 km; 75 mi).
The Sparoair I was the original version of the rocket, launched using an ejection system and a lanyard for firing; after that proved unreliable in flight testing, the Sparoair II was developed that utilised a rail launch with ignition prior to release from the aircraft. Eight launches of Sparoair II vehicles had been conducted by 1961. Each Sparoair II rocket cost US$6,000.
The Sparoair III utilised the aircraft's Low Altitude Bombing System (LABS) circuits to initiate launch; the second stage was ignited via a mechanical device armed by the acceleration of the first stage.
The first Sparoair III was launched on 8 July 1965; it proved a partial failure as the second stage failed to ignite. The second launch on 26 May 1966 failed after six seconds of second-stage burn when the vehicle exploded. No further launches were undertaken.
- Bolster, W.J.; G. C. Googins (1969). "Design, Development and Testing of a Series of Air-Launched Sounding Rockets". Journal of Spacecraft and Rockets. American Institute of Aeronautics and Astronautics. 6 (4): 460–465. Bibcode:1969JSpRo...6..460B. doi:10.2514/3.29679. Retrieved 2 December 2011.
- Pfeiffer, Marie (September 1962). "Rockets Probe Mysteries of Upper Air" (PDF). Naval Aviation News. Washington, D.C.: Navy Department: 19. Retrieved 4 December 2011.
- Jung, Philippe, ed. (1998). History of Rocketry and Astronautics: proceedings of the Twenty-seventh History Symposium of the International Academy of Astronautics. AAS History Series. 22. American Astronomical Society. p. 74. ISBN 978-0-87703-444-5.
- "Missiles and Rockets , Volume 21, Part 1". American Aviation Publications. 1967. Retrieved 2 December 2011.
- Wade, Mark (ed.). "Sparoair". Encyclopedia Astronautica. Retrieved 2 December 2011.