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Lot 1165
APOLLO COMMAND MODULE SHOCK STRUT Shock Strut, Crew Attenuation, X-X Axis, Foot, approximately 910 mm length x 70 mm diameter, dated 12-5-69,
25 October 2022, 14:00 EDT
New YorkSold for US$2,040 inc. premium
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APOLLO COMMAND MODULE SHOCK STRUT
Shock Strut, Crew Attenuation, X-X Axis, Foot, approximately 910 mm length x 70 mm diameter, dated 12-5-69, being part no V36-571711-921, and including a "FOOT STRUT LOCKOUT RELEASE LANYARD."
Provenance: Purchased as surplus by a North American Rockwell engineer.
The shock strut was part of the Command Module Crew-Couch/Restraint and Load Attenuation System and would have helped to absorb the load imposed upon the crew during landing. It's uncertain if this example had been used but was labeled "Not For Flight" in red at some point. It's one of 8 internal struts used as part of the impact attenuation system. From NASA's Command Module Overview: "During a water impact the CM deceleration force will vary from 12 to 40 Gs, depending on the shape of the waves and the CM's rate of descent. A major portion of the energy (75 to 90 percent) is absorbed by the water and by deformation of the CM structure. The module's impact attenuation system reduces the forces acting on the crew to a tolerable level. The internal part of the system consists of eight struts which connect the crew couches to the CK structure. These struts (two each for the Y and Z axes and four for the X axis) absorb energy by deforming steel wire rings between an inner and an outer piston" (pp 43-44).
Provenance: Purchased as surplus by a North American Rockwell engineer.
The shock strut was part of the Command Module Crew-Couch/Restraint and Load Attenuation System and would have helped to absorb the load imposed upon the crew during landing. It's uncertain if this example had been used but was labeled "Not For Flight" in red at some point. It's one of 8 internal struts used as part of the impact attenuation system. From NASA's Command Module Overview: "During a water impact the CM deceleration force will vary from 12 to 40 Gs, depending on the shape of the waves and the CM's rate of descent. A major portion of the energy (75 to 90 percent) is absorbed by the water and by deformation of the CM structure. The module's impact attenuation system reduces the forces acting on the crew to a tolerable level. The internal part of the system consists of eight struts which connect the crew couches to the CK structure. These struts (two each for the Y and Z axes and four for the X axis) absorb energy by deforming steel wire rings between an inner and an outer piston" (pp 43-44).