Engineering topics
Publications and source records attributed to Lehman, D..
Deep Space 1(DS1) was the first mission of NASA's New Millennium program and was chartered to flight test twelve high-risk, enabling technologies important for future space and Earth science programs on both a fast schedule and a low budget.
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Explore the source record for details and available documents.
The expression faster, better, cheaper or FBC is becoming the mantra for many new projects.
Deep Space 1 (DS1), launched on October 24, 1998, was the first mission of NASA's New Millennium program.
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Explore the source record for details and available documents.
Launched on October 25, 1998, Deep Space 1 (DS1) is the first mission of NASA's New Millennium Program, chartered to flight validate high-risk, new technologies important for future space and Earth science programs.
Launched on October 24, 1998, Deep Space 1 (DS1) is the first mission of NASA's New Millennium program, chartered to validate in space high-risk, new technologies important for future space and Earth science programs.
The Mars Pathfinder Mission is developing a small, low cost and mass vehicle that demonstrates interplanetary cruise, entry, descent, and upright landing systems for use in future missions.
The present F-O rotation sensors (FORS) are all-solid state devices for measuring rotations and rotation rates in inertial space that may reach the 0.003 deg/hr (1-sigma) accuracies required for NASA's Saturn-orbiting Cassini mission. Attention is presently given to the mission, inertial reference unit, and FORS instrument optoelectronic component requirements envisioned for such spacecraft applications.
The author has identified the following significant results. S190B imagery was the best single product from which fairly detailed structural and some lithologic mapping could be accomplished in the Big Horn basin, the Owl Creek Mountains, and the northern Big Horn Mountains. The Nye-Bowler lineament could not be extended east of its presently mapped location although a linear (fault or monocline) was noted that may be part of the lineament, but north of postulated extensions. Much more structure was discernible in the Big Horn basin than could be seen on LANDSAT-1 imagery; RB-57 color IR photography, in turn, revealed additional folds and faults. A number of linears, several of which could be identified as faults and one a monocline, cut obliquely the east-west trending Owl Creek uplift. The heavy forest cover of the Black Hills makes direct lithologic delineation impossible. However, drainage and linear overlays revealed differences in pattern between the areas of exposed Precambrian crystalline core and the flanking Paleozoic rocks. S192 data, even precision corrected segments, were not of much use.