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Apollo CM Side Hatch Counter Balance System Nitrogen Gas Cartridge

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:200.00 - 400.00 USD
Apollo CM Side Hatch Counter Balance System Nitrogen Gas Cartridge

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Auction Date:2016 Apr 21 @ 18:00 (UTC-05:00 : EST/CDT)
Location:236 Commercial St., Suite 100, Boston, Massachusetts, 02109, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
Empty aluminum Apollo CM Side Hatch Counter Balance System Nitrogen Gas Cartridge, measuring approximately 9? long and 1? in diameter, labeled on the side with part numbers, “ME-282-0052-0001, 101060000242, 4425025-511, 6-26-69 225.55.” In fine condition. The canister was designed to hold nitrogen at 5000 psi to actuate the Apollo Command Module main hatch counterbalance system. The counterbalance system provided crew members assistance with opening the heavy outward swinging hatch in the event emergency egress was required while on the launch pad, and to aid with exiting the command module after splashdown. The counterbalance system was incorporated as part of the Unified Hatch design developed following the Apollo 1 fire.