Optical Test Unit Design For The Direct Detection Laser Tranceiver Program

1989 ◽  
Author(s):  
Patricia A. Reed
Keyword(s):  
Direct Detection ◽  
Test Unit ◽  
Optical Test ◽  
Unit Design

scholarly journals Carbon capture test unit design and development using amine-based solid sorbent

2016 ◽  
Vol 112 ◽  
pp. 251-262 ◽  
Author(s):  
Ronald W. Breault ◽  
James L. Spenik ◽  
Lawrence J. Shadle ◽  
James S. Hoffman ◽  
McMahan L. Gray ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Test Unit ◽  
Solid Sorbent ◽  
Design And Development ◽  
Unit Design

The Development of an Aviation Fuel Thermal Stability Test Unit

1995 ◽  
Vol 117 (3) ◽  
pp. 468-474 ◽  
Author(s):  
D. L. Daggett ◽  
A. Veninger ◽  
C. Lewis ◽  
S. Bullock ◽  
R. Kamin
Keyword(s):  
Thermal Stability ◽  
Preliminary Test ◽  
Aircraft Engine ◽  
Aviation Fuel ◽  
Engine Fuel ◽  
Test Results ◽  
Test Unit ◽  
Thermal Deposition ◽  
Unit Design ◽  
Engine Components

A test unit has been developed by Rolls-Royce for the U.S. Navy to use in evaluating fuel thermal deposition typically found in various aircraft engine components. Although the current Jet Fuel Thermal Oxidation Tester (JFTOT) provides a qualitative thermal stability evaluation, it may not be able to predict in-service problems. Conditioning and testing of the fuel under realistic conditions is crucial if one is to predict deposit formations accurately. Engine fuel deposit evaluations and evidence from unpublished Rolls-Royce laboratory rig tests were used to help design a test unit that would address fuel stability problems in current or future aircraft. The Aviation Fuel Thermal Stability (AFTS) test unit embodies test modules that were selected with extensive fuel systems experience to enable the evaluation of thermal deposition in various fuel components using properly conditioned fuel. The test modules are controlled and results are recorded by a computer. This paper includes a review of the AFTS test unit design and preliminary test results thereof.

scholarly journals The Development of an Aviation Fuel Thermal Stability Test Unit

1994 ◽  
Author(s):  
David L. Daggett ◽  
Al Veninger ◽  
Chris Lewis ◽  
Stuart Bullock ◽  
Rick Kamin
Keyword(s):  
Thermal Stability ◽  
Preliminary Test ◽  
Aircraft Engine ◽  
Aviation Fuel ◽  
Engine Fuel ◽  
Test Results ◽  
Test Unit ◽  
Thermal Deposition ◽  
Unit Design ◽  
Engine Components

A test unit has been developed by Rolls-Royce for the U.S. Navy to evaluate fuel thermal deposition typically found in various aircraft engine components. Although the current Jet Fuel Thermal Oxidation Tester (JFTOT) provides a qualitative thermal stability evaluation, it may not be able to predict in service problems. Conditioning and testing of the fuel under realistic conditions is crucial if one is to accurately predict deposit formations. Engine fuel deposit evaluations and evidence from unpublished Rolls-Royce laboratory rig tests were used to help design a test unit that would address fuel stability problems in current or future aircraft. The Aviation Fuel Thermal Stability (AFTS) test unit embodies test modules that were selected with extensive fuel systems experience to enable the evaluation of thermal deposition in various fuel components using properly conditioned fuel. The test modules are controlled and results are recorded by a computer. This paper includes a review of the AFTS test unit design and preliminary test results thereof.

Detection and Characterization of earth-like Planets

1997 ◽  
Vol 161 ◽  
pp. 299-311 ◽  
Author(s):  
Jean Marie Mariotti ◽  
Alain Léger ◽  
Bertrand Mennesson ◽  
Marc Ollivier
Keyword(s):  
Direct Detection ◽  
Contrast Ratio ◽  
Angular Size ◽  
Physical Nature ◽  
Major Axis ◽  
Infrared Emission ◽  
Space Technology ◽  
Semi Major Axis ◽  
Earth Like Planets ◽  
Visible Wavelengths

AbstractIndirect methods of detection of exo-planets (by radial velocity, astrometry, occultations,...) have revealed recently the first cases of exo-planets, and will in the near future expand our knowledge of these systems. They will provide statistical informations on the dynamical parameters: semi-major axis, eccentricities, inclinations,... But the physical nature of these planets will remain mostly unknown. Only for the larger ones (exo-Jupiters), an estimate of the mass will be accessible. To characterize in more details Earth-like exo-planets, direct detection (i.e., direct observation of photons from the planet) is required. This is a much more challenging observational program. The exo-planets are extremely faint with respect to their star: the contrast ratio is about 10−10at visible wavelengths. Also the angular size of the apparent orbit is small, typically 0.1 second of arc. While the first point calls for observations in the infrared (where the contrast goes up to 10−7) and with a coronograph, the latter implies using an interferometer. Several space projects combining these techniques have been recently proposed. They aim at surveying a few hundreds of nearby single solar-like stars in search for Earth-like planets, and at performing a low resolution spectroscopic analysis of their infrared emission in order to reveal the presence in the atmosphere of the planet of CO H2O and O3. The latter is a good tracer of the presence of oxygen which could be, like on our Earth, released by biological activity. Although extremely ambitious, these projects could be realized using space technology either already available or in development for others missions. They could be built and launched during the first decades on the next century.

A novel enzyme immunoassay for the direct detection of H. pylori antigens in stool

2001 ◽  
Vol 120 (5) ◽  
pp. A492-A493 ◽  
Author(s):  
E HAINDL ◽  
H BENESCH ◽  
A FINCK ◽  
V MUEHISTEIN ◽  
A LEODOLTER ◽  
...  
Keyword(s):  
Enzyme Immunoassay ◽  
Direct Detection ◽  
H Pylori
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