American WWII target drone
The Brunswick-Balke-Collender OQ-4 was a prototype drone built in the United States by the Brunswick-Balke-Collender corporation.
The OQ-4 was one of a very few aviation-related ventures undertaken by Brunswick-Balke-Collender, which was basically a non-aviation company. It was similar in some respects to the Radioplane OQ-2, including a 12-foot wingspan. Although a few prototypes were built, the OQ-4 was not put into production, perhaps because Radioplane and Frankfort could produce enough target drone so that another production line was not necessary.
Specifications.
General characteristics* Crew: none* Wingspan: ()* Powerplant: 1 × engine , 7 hp (5 kW) 
Performance * Endurance: 1 hours 0 minutes
References.
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