83,931 to 83,940 of 84,745 Results
Jul 11, 1993
Vaughan, Arthur H.; Korechoff, Robert P., 1993, "Optical Metrology of the Hubble Space Telescope Simulator by means of Hartmann Tests", https://hdl.handle.net/2014/35345, San Diego, California, USA, JPL Open Repository
This paper describes the use of a Hartmann-type pupil mask and CCD Camera to perform wavefront and focus validation of the Hubble Space Telescope simulator before and during environmental testing of the second-generation Wide Field and Planetary Camera. |
Jul 10, 1993
Edberg, Stephen J., 1993, "Chasing and Observing Solar Eclipses", https://hdl.handle.net/2014/35425, San Diego, California, USA, JPL Open Repository
No abstract provided |
Jul 7, 1993
Zavracky, P.; Hartley, F.; Sherman, N.; Warner, K., 1993, "A New Force Balanced Accelerometer Using Tunneling Tip Position Sensing", https://hdl.handle.net/2014/35346, Yokohama, Japan, JPL Open Repository
In this paper, we report the initial development of a single-axis bulk micromachined accelerometer. The device employs an electron tunneling tip as a position detector in a force feedback control system. Control electrodes are placed above and below the proof mass and act as elec... |
Jul 7, 1993
Nickolaisen, Scott L.; Friedl, Randall R.; Stanley P. Sander, 1993, "Kinetics and Mechanism of the CIO + CIO Reaction: Pressure and Temperature Dependences of the Bimolecular and Termolecular Channels andThermal Decomposition of Chlorine Peroxide, CIOOCI", https://hdl.handle.net/2014/35519, USA, JPL Open Repository
The kinetics and mechanism of the CIO + CIO reaction and the thermal decomposition of CIOOCI were studied using the flash photolysis/long path ultraviolet absorption technique. Pressure and temperature dependences were determined for the rate coefficients for the bimolecular and... |
Jul 6, 1993
Null, G.; Owen, W.; Synnott, S., 1993, "Masses and Densities of Pluto and Charon", https://hdl.handle.net/2014/35325, ['Pluto and Charon Open Meeting', 'Flagstaff, Arizona, USA'], JPL Open Repository
We have analyzed Hubble Space Telescope Wide Field Camera CCD images of Pluto, Charon, and a background star, obtained on seven HST visits over a 3.2 day span in August 1991, to observe Pluto's barycentric motion and to determine the individual masses and bulk densities of Pluto... |
Jul 6, 1993
Bhandari, P.; Bard, S., 1993, "Thermal Systems Design and Analysis for a 10K Sorption Cryocooler Flight Experiment", https://hdl.handle.net/2014/35369, Orlando, Florida, USA, JPL Open Repository
The design, analysis and predicted performance of the Brilliant Eyes Ten-Kelvin Sorption Cryocooler Experiment (BETSCE) is described from a thermal perspective... |
Jul 6, 1993
Weissman, Paul R.; Stern, S. Alan, 1993, "(abstract) The Impactor Flux in the Pluto-Charon System", https://hdl.handle.net/2014/35453, Flagstaff, AZ, JPL Open Repository
The impactor flux on Pluto and Charon consists of long-period comets from the Oort cloud passing through the region, and intermediate-period comets evolving inward to (or outward from) short-period orbits. The source of the intermediate-period comets is likely an extended disk of... |
Jul 1, 1993
Keppenne, C. L.; Ingersoll, A. P., 1993, "High-Frequency Orographically Forced Variability in a Single-Layer Model of the Martian Atmosphere", https://hdl.handle.net/2014/35867, Journal of the Atmospheric Sciences, JPL Open Repository
A shallow water model with realistic topography and idealized zonal wind forcing is used toinvestigate orographically forced modes in the Martian atmosphere. Locally, the model reproduceswell the climatology at the sites of Viking Lander I and II (VL1 and VL2) as inferred from th... |
Jul 1, 1993
Johnson, C. C.; Horkachuck, M.; Phillip, R. W., 1993, "The Impact of Carbon Dioxide Concentration on Science and Hardware Design for Life Sciences Research on Space Station Freedom", https://hdl.handle.net/2014/35099, Denver, Colorado, USA, JPL Open Repository
No abstract provided |
Jul 1, 1993
Cwik, Tom; Jamnejad, Vahraz; Zuffada, Cinzia, 1993, "Coupling Finite Element and Integral Equation Representations To Efficiently Model Large Three-Dimensional Scattering Objects", https://hdl.handle.net/2014/34814, USA, JPL Open Repository
The usefulness of finite element modeling follows from the ability to accurately simulate the gemetry and three-dimensional fields on the scale of a fraction of a wavelength. To make this meodelling practical for engineering design,it is necessary to integrate the stages of geome... |