The patch was flown aboard the Delta Clipper Experimental Vehicle (DC-X).
The DC-X, short for Delta Clipper or Delta Clipper Experimental, was an uncrewed prototype of a reusable single-stage-to-orbitlaunch vehicle built by McDonnell Douglas in conjunction with the United States Department of Defense's Strategic Defense Initiative Organization (SDIO) from 1991 to 1993. Starting 1994 until 1995, testing continued through funding of the US civil space agency NASA.[1] In 1996, the DC-X technology was completely transferred to NASA, which upgraded the design for improved performance to create the DC-XA. After a test flight of DC-XA in 1996 resulted in a fire, the project was cancelled. Despite its cancellation, the program inspired later reusable launch systems.
It originates from Pete Conrad's collection. Conrad was the program manager of the DC-X. During his career at NASA he commanded the Apollo 12 mission to the moon, and also flew aboard Americas first space station Skylab