Jun 032012
Flight Tests of the Prototype Grumman F6F-5K Target Drone (1946-7)

This article reproduces the “Final Report on Flight Tests of Prototype F6F-5K High Speed Target Drone with Eclipse-Pioneer P-1K Auto-Pilot,” Report No. R-0168, produced by the Naval Air Material Center, Naval Aircraft Modification Unit located in Johnsville, Pennsylvania in 1947. The following paragraphs reproduce the main conclusions of the report, a high resolution version of […]

Apr 182011
Grumman Design 98 Sapphire Powered Cougar Proposal

The Grumman Design 98 Sapphire powered Cougar brochure above depicts a very early form of what eventually became the F9F-8/-9 (later F11F) Tiger. While there is no date on the brochure, aviation historian Tommy Thomason possesses a three-view of this particular study dated December 11, 1951. It does not appear to have been prepared to […]

Feb 042011
Grumman Design 97 Day Fighter

Grumman’s submission to BuAer’s OS-130 Day Fighter competition was the Design 97, an interesting interim step between the F9F-6 Cougar and later F11F Tiger, the latter known as the Design 98 within Grumman. The company prepared a very comprehensive Design Summary for the proposal, which is summarized below. Operational Features Performance The maximum speed of […]