4 - 13 EXTERNAL LM OBSERVATIONS AND PHOTOGRAPHY A. Test Objectives D-1 Effects of Landing on LM Landing Gear D-2 Effects of Landing on LM Structure and Components D-3 Descent Engine Skirt Damage and Clearance After Landing D-4 Effects of RCS Plume Impingement on LM Structure and Components L-2 TV Coverage of External Landed LM M-3 Obtain Photographs of Landed LM B. Test Requirements 1. Operate the TV camera to provide an external view of the LM. [L] 2. Photograph any observed LM external structural damage. [D, M] 3. Determine descent engine skirt ground clearance. [D, M] 4. Photograph any effects of RCS plume impingement observed. [D, M] 5. Obtain photographs of any lunar material collected on the LM. [D, M] C. Procedures/Checklist 1. Mission G Photographic and Television Operations Plan. D. Data Requirements 1. Flight Crew Reports/Logs/Photographs a. Comment on any LM component damage to include any visible discoloration or lunar soil accumulation. [D] (M) b. Comments describing any descent engine skirt damage and estimate of any skirt ground clearance. [D] (M) c. If the landing gear strut assembly photographs cannot be obtained, estimate the amount of stroking of each primary and secondary strut assembly. [D] (M) d. Photograph the landing gear to show the stroking of the primary and secondary strut assemblies. [D, M] (M) e. Photograph the LM exterior showing any structural damage. [D, M] (M) f. Photograph each landing gear assembly along the Z axis and the Y axis. [D, M] (HD) g. Photograph the descent engine skirt. [D, M] (HD) h. Photograph the LM base heat shield. [D, M] (HD) i. Photograph the LM exterior, i.e., structure antenna, RCS jets, windows and foot pads. [D, M] (HD) j. Photograph soil accumulation on the LM. [D, M] (HD) k. Photographs by the close up stereo camera of lunar material adhering to LM surfaces. [M] (HD) 2. Ground Support a. LM TM HBR. [D] (M), [L] (HD) b. LM Mass, center of gravity and mass moment of inertia calculations. [E] (M) c. Video tape of all TV coverage. [L] (M)