Planes That Never Flew

The British-designed Saunders-Roe SR177, an advanced rocket plane that, though capable of climbing to the very edge of space, fell victim to sabotage by a rival aircraft company.

A documentary on the SST, America's answer to Concorde in the competition between Europe and the United States to build a supersonic airliner.

The history of 1950s icon the Lockheed F-104 Starfighter, designed by engineer Clarence `Kelly' Johnson, who had previously failed in an attempt to create a supersonic fighter.

The story behind plans for an atomic bomber that failed to progress from the drawing board.