I'm comparing different docking mechanisms, but I can't find the mass of the NASA Docking System.
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In 2010 NASA published SSP 50920 NASA Docking System (NDS) User Guide, with information intended for people designing vehicles that would use NDS.
Section 3.3.1 Mass Properties states the following:
The NDS assembly mass properties are defined in JSC 65795. The NDS assembly Not To Exceed (NTE) control weight is:
- 750 pounds (lbs) NDS -301 and -303 configurations
- 704 lbs NDS -302 configuration*
- 711 lbs NDS -304 configuration
[*](Note, the -302 configuration mass includes the weight of the avionics boxes that are installed inside the Host Vehicle. The additional hardware needed to integrate the -302 with the Host Vehicle are not included in the NTE mass above and estimated to be approximately ~65 lbs).
Asterisk in brackets before the parenthetical added by me, because I believe it corresponds to the asterisk next on the -302 configuration line. The use of lbs for mass and "configuration mass includes the weight" is the fault of the writers of the document, not me.
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1$\begingroup$ fun fact: I found this while reassuring myself that the NDS was both present on the ISS and the Starliner but not Dragon, searching DuckDuckGo (which is fed by Bing? I think?) for "NASA Docking System" $\endgroup$2024-11-10 08:39:22 +00:00Commented Nov 10, 2024 at 8:39