Terms & Abbreviations: D
- Dahlen, J. M.
Member of the MIT Instrumentation Lab. Director, Systems Engineering Division, Apollo Guidance and Navigation Program.
- DAP
Digital Autopilot.
- Delta-v
The amount of change in velocity required to change a spacecraft's trajectory in a certain way.
- Dick Battin
See Battin, Richard
- DOI
Descent Orbit Insertion. A LM maneuver performed to reduce the altitude of its orbit in preparation for landing.
- DPS
- Dr. Battin
See Battin, Richard
- DSKY
The "Display and Keyboard" interface through which the astronauts controlled their guidance computers.