The Republic Aviation AP-100 was a project for a VTOL, six-turbojet engined, nuclear capable, strike fighter concept.
It had three ducted fans in the centre of its fuselage and tail and was a possible contender for the TFX Program.
[1][2][3] The project was designated as a "fighter", but in fact was a tactical attack aircraft capable of delivering a small nuclear bomb.
The weight of the aircraft would have been 38,000 lb (17,237 kg) with its engines generating 14,400 lb (6,532 kg) of thrust.
Data from Air Progress, Spring 1961General characteristics Performance