Test mission - .
Nation: Canada. Agency: HARP. Apogee: 100 km (60 mi). The Martlet 3A gun-launched rocket program began in the spring of 1963 with test flights beginning in September. Early Martlet 3A test flights were less then successful. At launch loads of 5000-6000 g’s the rocket motor fuel grain would fail.The Martlet 3A set a world record as the largest rocket launched from a gun.