Legacy of Space-Based Interceptors at APL

APL first became involved with the Strategic Defense Initiative Organization (SDIO) in April 1984. The teamwork between SDIO and APL, along with many other subcontractors, began with the Delta 180 program, the first in a series known as the Delta programs. This team became a driving force in the follow-on Delta 181, Delta 183, and MSX programs.

On September 5, 1986, the experimental Delta 180 carrying the inventive APL-designed-and-built missile sensor package is launched from Cape Canaveral. Less than three hours later, the interceptor scores a direct hit with a test missile. The following year, President Reagan awards a Presidential Commendation to APL for the Delta 180 program.

• Smashing Satellites as Part of the Delta 180 Strategic Defense Initiative Mission (The Space Review, July 17, 2023)
• Strategic Defense Initiative (Johns Hopkins APL Technical Digest, Volume 13, Number 1)
• The Creation of the Delta 180 Program and Its Follow-Ons (Johns Hopkins APL Technical Digest, Volume 11, Number 1-2)