American military anti-satellite system. Study 1975. Project SPIKE was a 1970's suborbital conventional warhead ASAT air-launched from an F-106 interceptor. Considerable work was done from the early 1970s under the Missile and Space Defense Program.
Status: Study 1975.
Research centered on the miniature homing vehicle (MHV) with nonnuclear kill capability. It seems to have lead to the 1980's F-15 launched ASAT of the same concept.