 The RTV-N-15 Pollux was derived from the Gorgon IIC airframe, the pulsejet engine being moved to an internal mounting, and it was intended to use a mixture of radar and infrared guidance.Pollux was first flown in 1948, however by 1951 it had been flown only three times, and the program was cancelled.A single example of the RTV-N-15 was donated by the U.S. Navy to the National Air and Space Museum in 1971; it is on display at the Steven F. Udvar-Hazy Center.