Surplus Phoenix missiles like this one mounted on the centerline pylon of NASA's F-15B research aircraft may be used to acquire hypersonic flight test data.

Surplus Navy Phoenix missiles like this one mounted on the centerline pylon of NASA's F-15B research aircraft may be used to acquire hypersonic flight test data.

Surplus Navy Phoenix missiles like this one mounted on the centerline pylon of NASA's F-15B research aircraft may be used to acquire hypersonic flight test data.

Photographer NASA/Tom Tschida
Location AFRC