Mechanical Design of the LMDE.pdf - Heroicrelics

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in order to provide stiffness during handling and launch and boost vibration.Figure 13 shows the temperatures measured during a high altitude test firing.2400f.----- 0.029V WALLDATA ARE MAXIMUM VALUES FROMTEST NO. HATS 060 • AEDC AD-lit -12TEMPERATURE.of200018001----- 0.017 ----iWALL1----0.010 --WALL1600~OL. ____" ____ ~ __ ~ ____ ~ ____" ____ ~ ____ ~~ m 24 m n H 40AREA RATIOFigure 13.Thicknesses shown in thischart are actual measurementsof that specimen. One of thenozzle extensions which wasused on the qualification testengines is shown in Figure 14after the test was completed.Proof that the nozzleextension would collapse asrequired without impartingforces large enough to upsetthe lunar vehicle during a10 ft per sec descent to thelunar surface was undertakenwith the aid of the testsetup shown in Figure 15.The columbium alloynozzle extension was attachedto a servo controlled hydrauliccylinder which provided energyFigure 14. LMDE Nozzle Extension necessary to collapse thenozzle extension exit flangeagainst the lower platform which was instrumented for measuring load. Surroundingthe test specimen was a bank of quartz lamps which heated up thecolumbium to the temperature simulating the condition at lunar touchdown.The temperature gradient controlled during this test was 2l00°F at the- 11 -
Figure 15.Nozzle Extension in Crushing Test Fixture16:1 joint to l250°F at the exit plane . The 10 ft per sec impact velocitywas accomplished by compressing the nozzle extension 28 inches in less than1/2 second after several inches of free motion. Resultant loads andenergies recorded are shown in Figure 16 .10 15 20 25 30CRUS HIN G DISTANCE - INCHESFigure 16.- 12 -
Page 1 and 2: MECHANICALDESIGNDFTHE LUNARMODULEDE
Page 3 and 4: Engine DescriptionCOMffNSAT1NGSPIti
Page 5 and 6: Engine GimbalThe gimbal assembly is
Page 7 and 8: Figure 6.Engine Mass SimulatorMount
Page 9 and 10: Figure 10.Combustion Chamber Assemb
Page 11: Nozzle ExtensionThe radiation coole
Page 15 and 16: (a)Cross BeamFlexure(b)Injector Dri
Page 17 and 18: Figure 21.Figure 22.Section of Two-
Page 19 and 20: out of the first two analyses on th
Page 21 and 22: Figure 26.Vibration Test of LMDEsys
Page 23: designers and builders of the Lunar

Mechanical Design of the LMDE.pdf - Heroicrelics

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