국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Space Suit Joint Torque Measurement Method Validation
저자	Valish, Dana;; Eversley, Karina
Keyword	CONSTELLATION PROGRAM;; CONTRACTORS;; PROTOTYPES;; PROVING;; SPACE SUITS;; STATISTICAL ANALYSIS;; TORQUE
URL	http://hdl.handle.net/2060/20120004732
보고서번호	JSC-CN-26077
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	In 2009 and early 2010, a test method was developed and performed to quantify the torque required to manipulate joints in several existing operational and prototype space suits. This was done in an effort to develop joint torque requirements appropriate for a new Constellation Program space suit system. The same test method was levied on the Constellation space suit contractors to verify that their suit design met the requirements. However, because the original test was set up and conducted by a single test operator there was some question as to whether this method was repeatable enough to be considered a standard verification method for Constellation or other future development programs. In order to validate the method itself, a representative subset of the previous test was repeated, using the same information that would be available to space suit contractors, but set up and conducted by someone not familiar with the previous test. The resultant data was compared using graphical and statistical analysis;; the results indicated a significant variance in values reported for a subset of the re-tested joints. Potential variables that could have affected the data were identified and a third round of testing was conducted in an attempt to eliminate and/or quantify the effects of these variables. The results of the third test effort will be used to determine whether or not the proposed joint torque methodology can be applied to future space suit development contracts.