The McDonnell Douglas 279 project is an extrapolation of experience gained with the Harrier. While such advanced supersonic projects await funding, NASA is planning a more modest research programme to simplify V/STOL flying, using the original YAV-8B prototype.

The General Dynamics E-7 project is based on the ejector principle that was applied with notably disappointing results to the Rockwell XFV-12A and the Lockheed XV-4A. It takes advantage, however, of more successful recent work by de Havilland Canada arising from its augmented wing research with a modified Buffalo.

Augmented wing research with a modified Buffalo.

The ejector principle was applied with notably disappointing results to the Rockwell XFV-12A (on photo) and the Lockheed XV-4A.

The ejector principle was applied with notably disappointing results to the Rockwell XFV-12A and the Lockheed XV-4A (on photo).

The McDonnell Douglas 279 project is an extrapolation of experience gained with the Harrier. While such advanced supersonic projects await funding, NASA is planning a more modest research programme to simplify V/STOL flying, using the original YAV-8B prototype.