Analytical and experimental studies of leak location and environment characterization for the international space station | Zendy

Michael Woronowicz | Zendy; Joshua Abel | Zendy; David Autrey | Zendy; Rebecca Blackmon | Zendy; Tim Bond | Zendy; Martin J. Brown | Zendy; Jesse Buffington | Zendy; E. S. Cheng | Zendy; Danielle DeLatte | Zendy; Kelvin Nascimento Garcia | Zendy; Jodie Glenn | Zendy; Doug Hawk | Zendy; Jonathan Ma | Zendy; Jelila S. Mohammed | Zendy; Kristina Montt de Garcia | Zendy; Radford L. Perry | Zendy; Dino Rossetti | Zendy; Kimathi Tull | Zendy; Eric Warren | Zendy

Open Access

Analytical and experimental studies of leak location and environment characterization for the international space station

Author(s) -

Michael Woronowicz,

Joshua Abel,

David Autrey,

Rebecca Blackmon,

Tim Bond,

Martin J. Brown,

Jesse Buffington,

E. S. Cheng,

Danielle DeLatte,

Kelvin Nascimento Garcia,

Jodie Glenn,

Doug Hawk,

Jonathan Ma,

Jelila S. Mohammed,

Kristina Montt de Garcia,

Radford L. Perry,

Dino Rossetti,

Kimathi Tull,

Eric Warren

Publication year - 2014

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4902641

Subject(s) - leak , international space station , aerospace engineering , cabin pressurization , sensitivity (control systems) , residual , orbit (dynamics) , calibration , pressure measurement , dynamic pressure , range (aeronautics) , simulation , mechanics , marine engineering , environmental science , computer science , physics , engineering , mechanical engineering , environmental engineering , algorithm , quantum mechanics , electronic engineering

The International Space Station program is developing a robotically-operated leak locator tool to be used externally. The tool would consist of a Residual Gas Analyzer for partial pressure measurements and a full range pressure gauge for total pressure measurements. The primary application is to demonstrate the ability to detect NH3 coolant leaks in the ISS thermal control system. An analytical model of leak plume physics is presented that can account for effusive flow as well as plumes produced by sonic orifices and thruster operations. This model is used along with knowledge of typical RGA and full range gauge performance to analyze the expected instrument sensitivity to ISS leaks of various sizes and relative locations (“directionality”). The paper also presents experimental results of leak simulation testing in a large thermal vacuum chamber at NASA Goddard Space Flight Center. This test characterized instrument sensitivity as a function of leak rates ranging from 1 lbm//yr. to about 1 lbm/day. This d...

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