Military Orbital Development System

Lore & Background

The Military Orbital Development System (MODS) was created by the US Air Force Space Systems Division in June 1962. It was the original concept that led to the Blue Gemini proposal in August 1962, which planned to use off-the-shelf Gemini spacecraft for a series of seven flights to prepare for MODS. Blue Gemini was to end approximately four months before MODS was to debut.

Secretary of Defense Robert McNamara canceled both MODS and Blue Gemini in January 1963, deciding that military experiments could be carried aboard NASA's Project Gemini instead. On 21 January 1963, McNamara and NASA Administrator James Webb agreed to create a Gemini Program Planning Board to avoid duplication of effort.

In December 1963, McNamara approved the development of the Manned Orbital Laboratory (MOL), which was essentially a revived MODS. The Gemini B spacecraft, developed for MOL, included a tunnel through its heat shield to allow astronauts to reach the MOL spacecraft, and should not be confused with Blue Gemini.

Reader's Guide

The Military Orbital Development System (MODS) represents an early attempt by the United States Air Force to establish a military crewed space station. Although it was canceled before any hardware was built, MODS set the stage for later programs. Its cancellation in January 1963 by Secretary of Defense Robert McNamara, along with Blue Gemini, reflected a policy decision to rely on NASA for crewed spaceflight while allowing military experiments on NASA missions. The creation of the Gemini Program Planning Board on 21 January 1963 formalized this cooperation. MODS was effectively revived in December 1963 as the Manned Orbital Laboratory (MOL), which did produce hardware, including the Gemini B spacecraft now displayed at the National Museum of the United States Air Force. MODS itself remained a paper project, but its legacy is seen in the MOL program and the broader history of military spaceflight.

Did You Know?

• MODS was created by the US Air Force Space Systems Division in June 1962.
• MODS was canceled in January 1963 by Secretary of Defense Robert McNamara.
• MODS was essentially revived as the Manned Orbital Laboratory (MOL) in December 1963.
• No hardware was built for MODS; it remained a paper project.