Tindallgrams

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

Descent Propulsion System.

Dr. Battin

See Battin, Richard