Tindallgrams

Terms & Abbreviations: C

CDDT

Countdown Demonstration Test.

CDH

Constant Delta Height (also known as Constant Differential Height). One of the maneuvers performed by the LM after ascent from the lunar surface to rendevouz with the CSM.

CDR

Critical Design Review.

CFP

Concentric Flight Plan.

Cluster

In AAP parlance, the combination of the S-IVB workshop and attached components.

CMC

Command Module Computer.

Copps, Ed

Member of the MIT Instrumentation Lab

CSI

Co-Elliptic Sequence Initiation. One of the maneuvers performed by the LM after ascent from the lunar surface to rendevouz with the CSM.

CSM

Command-Service Module.