The Grumman F11F/F-11 Tiger is a supersonic, single-seat carrier-based fighter aircraft designed and produced by the American aircraft manufacturer Grumman. For a time, it held the world altitude record of 76,939 feet (23,451 m), as well as being the first supersonic fighter to be produced by Grumman.Work on what would become the Tiger commenced in 1952 as a design study, internally designated G-98, to improve the F9F-6/7 Cougar. However, the resulting design produced had little association with the Cougar by the end of the project. The U.S. Navy Bureau of Aeronautics placed order for two prototypes...