Engineering topics
Peters, D.
Publications and source records attributed to Peters, D..
Validation and verification of the Kepler planet-detection mission
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Use of plastic commercial off-the-shelf (COTS) microcircuits for space applications
This paper will discuss a proposed methodology intended for qualification of PEMs by NASA.
Reliability of low glass transition temperaature PEMs
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Investigation of low glass transition temperature on COTS PEM's reliability for space applications
Plastic Encapsulated Microelectronics (PEM) reliability is affected by many factors. Glass transition temperature (Tg) is one such factor. In this presentation issues relating to PEM reliability and the effect of low glass transition temperature epoxy mold compounds are presented.
NEPP/NEPAG COTS PEMS work for NASA
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Investigation of low glass transition temperature on COTS PEMs reliability for space applications
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Reliability of low glass transition temperature PEM's
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Imaging interferometer using dual broadband quantum well infrared photodetectors
The Jet Propulsion Laboratory is developing a new imaging interferometer that has double the efficiency of conventional interferometers and only a fraction of the mass and volume. The project is being funded as part of the Defense Advanced Research Projects Agency (DARPA) Photonic Wavelength And Spatial Signal Processing program (PWASSSP).
COTS actives initiative for space applications
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Asteroid Trails in Hubble Space Telescope WFPC2 Images: First Results
Careful examination of 28,460 selected Wide Field and Planetary Camera 2 (WFPC2) long exposures from 1994, 1995 and early 1996 has revealed trails of 96 distinct moving objects.
Hybrid analysis of deformation using interferometric measurements
Two hybrid methods of deformation analysis combining moire interferometry and finite element techniques are introduced. The hybrid methods are applied to determine the strain fields in the test section of a composite cruciform specimen in order to evaluate the uniformity of the shear strain field. Both methods show that there are significant shear strain gradients in the specimen test section. One of the hybrid methods - the full-field analysis using the random-node mesh generator - detects the presence of material property nonuniformity which is assumed uniform in the boundary-node method.
Test of charge injection device, phase 1
A computer-controlled automatic facility containing two interactive microprocessors, peripherals, and an optical bench was used to obtain device characteristics for use in evaluating CID's as the sensor element in a prospective star tracker application. Each of the ST-256 chips tested contains a 256 x 256 pixel element array with 65536 picture elements. Two ST-256 devices were tested at 20 C under light levels of 10%, 0.1%, and 0.01% saturation, and in darkness. The saturation level was established at 0.95 microwatts sq cm as measured by the radiometeric sensor. Two test runs under each condition were performed for each chip. Two complete sets of data for each of the devices were thus obtained. A separate data field was used to store the results of each test condition. Repetitive runs of a test condition were stored sequentially in the same file. Examination of the data using print-outs is shown in examples.