| Q-1 | |
|---|---|
 Radioplane YQ-1B | |
| General information | |
| Type | High-speed target drone |
| Manufacturer | Radioplane Company |
| Primary user | U.S. Air Force |
| Number built | 34 |
| History | |
| First flight | 1950 |
| Developed into | GAM-67 Crossbow |
TheRadioplane Q-1 was an Americantarget drone, developed in the early 1950s for theUnited States Air Force by theRadioplane Company. Originally powered by apulsejet engine, then later developed as an improvedturbojet-powered aircraft, the Q-1 failed to win the favor of the USAF. However, the aircraft provided the basis of theGAM-67 Crossbowanti-radar missile.
Shortly after its formation in 1948, the United States Air Force issued a specification calling for a new type of high-speed target drone. Required to be jet-powered to provide the most realistic training, the contract for the development of the drone was given to the Radioplane Company, later a division ofNorthrop.[1]
Powered by a singleGiannini PJ39 pulsejet engine, the drone, given the designation RP-26 by the company and XQ-1 by the USAF, was a high-wing,rocket sled launched aircraft. Originally fitted with a large singlevertical stabiliser, the design was modified to atwin tail configuration to provide additional clearance of its carrier aircraft.[1] Recovery, following the conclusion of the drone's flight, was by parachute.[1]
The first flight of the XQ-1 prototype took place in 1950; 28 aircraft of the type were built.[1] Although the aircraft proved to be mostly satisfactory, the thirsty nature of the pulsejet engine limited the drone's endurance to a mere 60 minutes.[2] In an attempt to increase the potential flight time of the aircraft, one XQ-1 was re-engined with aContinental YJ69 turbojet replacing the pulsejet, becoming the XQ-1A;[1] however it was determined that further improvements were needed, and so a major redesign of the type was undertaken.[1]
Known by the company as RP-50 and designated by the USAF as YQ-1B, the revised drone flew for the first time during 1953, being evaluated by the Air Force later that year. Using the YJ69 engine, the air intake for the jet was relocated to the nose of the aircraft, while theairframe overall was modified to increase the streamlining of the craft.[1] The rocket-sled launch was abandoned in favor of air launching, with theDouglas DB-26 being the most common carrier aircraft.[1]
Six YQ-1Bs were built for evaluation; they proved trouble-free, no production order for the type was undertaken, the competingRyan Q-2 drone having been selected for operational service instead; as a result, the Q-1 program was terminated.[1] However, the YQ-1B airframe was used by Radioplane as the start of development of a newanti-radar missile, which would be tested by the U.S. Air Force as theGAM-67 Crossbow.[3]
Data from[1]
General characteristics
Performance
Related development
Aircraft of comparable role, configuration, and era
Related lists
