Directory of U.S. Military Rockets and Missiles|
Appendix 1: Early Missiles and Drones
|Copyright © 2003 Andreas Parsch|
To provide the U.S. armed forces with a more modern target drone to supersede the OQ-2/-3/-14 family, Radioplane designed their model RP-18. It was first tested by the USAAF in March 1945 as the XOQ-17, which was followed by the first production order for the OQ-17 in February 1946.
The OQ-17 was a streamlined all-metal target powered by a Righter O-45-35 four-cylinder piston engine. Like the earlier Radioplane drones, it was launched by catapult and retrieved by parachute. It was also equipped for operations over water.
The U.S. Navy originally tested the RP-18 as XTD4D-1, but the TD4D-1 production version was redesignated as KDR-1 Quail. The designation KDR-2 was allocated to a variant with minor stuctural changes.
The production of the OQ-17/KDR series was terminated after only 430 units, because the O-45 engine proved to be unreliable. Radioplane had already started in July 1945 to redesign the RP-18 to use the McCulloch O-90 engine as tested in the OQ-6A. This effort resulted in the model RP-19, which was eventually produced as the OQ-19/KD2R.
Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!
Data for OQ-17/KDR-1:
|Length||2.56 m (8 ft 4.9 in)|
|Wingspan||3.10 m (10 ft 2 in)|
|Weight||65 kg (143 lb)|
|Speed||306 km/h (190 mph)|
|Ceiling||4600 m (15000 ft)|
|Propulsion||Righter/Kiekhaefer O-45-35 piston engine; 26 kW (35 hp)|
 Richard A. Botzum: "50 Years of Target Drone Aircraft", Northrop, 1985
 US Army Air Forces: "Army Aircraft Model Designations", 1946
 US Navy: "Model Designations of Naval Aircraft", 1947 and 1950
Back to Directory of U.S. Military Rockets and Missiles, Appendix 1