scholarly journals Further investigations of the Passive Optical Sample Assembly (POSA). I - flight experiment

2001 ◽  
Author(s):  
Miria Finckenor ◽  
R. Kamenetzky ◽  
Jason Vaughn
Keyword(s):  
Flight Experiment ◽  
Sample Assembly ◽  
Optical Sample

scholarly journals The Passive Optical Sample Assembly (POSA)-I experiment - First flight results and conclusions

1999 ◽  
Author(s):  
James Zwiener ◽  
Rachel Kamenetzky ◽  
Jason Vaughn ◽  
Miria Finckenor
Keyword(s):  
Sample Assembly ◽  
Optical Sample

Contamination observed on the Passive Optical Sample Assembly-I (POSA-I) experiment

1998 ◽  
Author(s):  
James M. Zwiener ◽  
Rachel R. Kamenetzky ◽  
Jason A. Vaughn ◽  
Miria M. Finckenor
Keyword(s):  
Sample Assembly ◽  
Optical Sample

Contamination Effects on the Passive Optical Sample Assembly Experiments

2000 ◽  
Vol 37 (5) ◽  
pp. 567-572 ◽  
Author(s):  
H. Gary Pippin ◽  
Suzanne L. B. Woll ◽  
Valerie A. Loebs ◽  
Gail Bohnhoff-Hlavacek
Keyword(s):  
Sample Assembly ◽  
Optical Sample ◽  
Contamination Effects

Contamination effects on the Passive Optical Sample Assembly Experiments

2000 ◽  
Author(s):  
Gail Bohnhoff-Hlavacek ◽  
H. Pippin ◽  
Suzanne Woll ◽  
Valerie Loebs
Keyword(s):  
Sample Assembly ◽  
Optical Sample ◽  
Contamination Effects

Modeling molecular plant-bacteria interactions for flight experiment

2002 ◽  
Vol 8 (5-6) ◽  
pp. 81-85 ◽  
Author(s):  
N.A. Kozyrovska ◽  
◽  
G.L. Kovtunovych ◽  
E.V. Lar ◽  
M.V. Kovalchuk ◽  
...  
Keyword(s):  
Flight Experiment

The CASES Flight Experiment: An Overview

1990 ◽  
Author(s):  
John R. Sesak ◽  
J. Mel Waldman
Keyword(s):  
Flight Experiment

scholarly journals The Effect of Low Earth Orbit Atomic Oxygen Exposure on Phenylphosphine Oxide-Containing Polymers

2000 ◽  
Vol 12 (1) ◽  
pp. 43-52 ◽  
Author(s):  
John W Connell
Keyword(s):  
Thin Film ◽  
Atomic Oxygen ◽  
Low Earth Orbit ◽  
Space Environment ◽  
Earth Orbit ◽  
Cooperative Effort ◽  
Flight Experiment ◽  
Oxygen Exposure ◽  
Atomic Oxygen Exposure ◽  
Phenylphosphine Oxide

Thin films of phenylphosphine oxide-containing polymers were exposed to low Earth orbit aboard a space shuttle flight (STS-85) as part of flight experiment designated Evaluation of Space Environment and Effects on Materials (ESEM). This flight experiment was a cooperative effort between the NASA Langley Research Center (LaRC) and the National Space Development Agency of Japan (NASDA). The thin-film samples described herein were part of an atomic oxygen exposure (AOE) experiment and were exposed to primarily atomic oxygen (∼1×1019 atoms cm−2). The thin-film samples consisted of three phosphine oxide-containing polymers (arylene ether, benzimidazole and imide). Based on post-flight analyses using atomic force microscopy, x-ray photo-electron spectroscopy and weight loss data, it was found that the exposure of these materials to atomic oxygen (AO) produces a phosphorus oxide layer on the surface of the samples. Earlier work has shown that this layer provides a barrier towards further attack by AO. Consequently, these materials do not exhibit linear erosion rates which is in contrast with most organic polymers. Qualitatively, the results obtained from these analyses compare favourably with those obtained from samples exposed to AO and/or an oxygen plasma in ground-based exposure experiments. The results of the low Earth orbit AO exposure on these materials will be compared with those of ground-based exposure to AO.

Sign in / Sign up

Export Citation Format

Share Document