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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 145 records · Page 8
All sourcesNASA NTRSDOE OSTI
NASA NTRS1997

Mars Surveyor '98 MVACS Robotic Arm Control System Design Concepts

This paper describes the control system design concepts for the Mars Volatiles and Climate Surveyor (MVACS) Robotic Arm which supports the scientific investigations to be conducted as part of the Mars Surveyor '98 Lander project. Novel solutions are presented to some of the unique problems encountered in this demanding space application with its tight constraints on mass, power, volume, and computing power.

control manipulator Mars robot trajectory 4-DOF↗
NASA NTRS1996

Mars Global Surveyor: Ready for Launch in November 1996

...In this report the status of the MGS (Mars Global Surveyor) mission, three months prior to launch, will be described along with three specific topics: aerobraking, the lander to orbiter relay and the common operations project for the Mars Global Surveyor Program.

MGS↗
NASA NTRS1972

Mariner Mars 1971 photogrammetric calibrations.

One of the major objectives of the Mariner Mars 1971 mission was the systematic mapping of Mars. This required a complex and thorough photogrammetric calibration of both the wide-angle and narrow-angle cameras mounted on the spacecraft scan platform. Because of the peculiarities of the TV imaging techniques (transmission quality, low resolution, electronic distortion, etc.), combined with the extremely small vidicon format, many unique difficulties were encountered and many unprecedented problems had to be solved. Their successful solution, based on experience gained during the Surveyor and Mariner Mars 1969 projects, is discussed, and the calibration procedure for the parameters of interior orientation, as well as for opto-mechanical orthogonality, is described in detail.

Benesh, M.↗
NASA NTRS2001

Assimilation of MGS Data Into a Coupled GCM-Mesoscale Model of the Martian Atmosphere

The project sought to develop a coupled GCM-mesoscale model and to assimilate Mars Global Surveyor (MGS) data into the coupled model. To achieve the project goals, four specific research activities were proposed. These activities are reiterated for completeness and the progress in each of the activities is noted in future sections of this report.

Rafkin, Scot C. R.↗
NASA NTRS1966

Flight project support

Deep Space Stations flight support operations for Surveyor II, Lunar Orbiter I, Pioneer VI and VII, Mariner IV, and Atlas Centaur

TRACKING STATION↗
NASA NTRS1973

Remotely Manned Systems for operation and exploration in space

A brief overview is presented of Remotely Manned Systems with emphasis on their use as tools for exploration and operation in space. Remotely Manned Systems missions and functions in space are described and classified in relation to other existing or planned space systems. Problem areas of large-scale man-machine systems are identified based on experience in the Surveyor program, the Mariner 9 Mars orbiter project and the Apollo program. The effects of communication time delay on system performance are investigated using the average velocity of a Martian rover as performance indicator. A substantial performance increase can be achieved by providing certain autonomous capabilities to the remote system.

Heer, E.↗
NASA NTRS1998

Vision Algorithms to Determine Shape and Distance for Manipulation of Unmodeled Objects

This paper discusses the development of a robotic system for general use in an unstructured environment. This is illustrated through pick and place of randomly positioned, un-modeled objects. There are many applications for this project, including rock collection for the Mars Surveyor Program. This system is demonstrated with a Puma560 robot, Barrett hand, Cognex vision system, and Cimetrix simulation and control, all running on a PC. The demonstration consists of two processes: vision system and robotics. The vision system determines the size and location of the unknown objects. The robotics part consists of moving the robot to the object, configuring the hand based on the information from the vision system, then performing the pick/place operation. This work enhances and is a part of the Low Cost Virtual Collaborative Environment which provides remote simulation and control of equipment.

Montes, Leticia↗
NASA NTRS2000

Summary of JPL Activities

A viewgraph presentation outlines the Jet Propulsion Laboratory (JPL) flight programs, including past, present and future missions targeting Solar System exploration. Details, including launch dates and batteries used, are given for Deep Space 1 (Asteroid Rendezvous), Deep Space 2 (Mars Penetrator), Mars Global Surveyor, Mars Surveyor '98, Stardust, Europa Orbiter, Mars Surveyor 2001, Mars 2003 Lander and Rover, and Genesis (Solar Dust Return). Earth science projects are also outlined: Active Cavity Radiometer Irradiance Monitor (ARIMSAT), Ocean Topography Experiment (TOPEX/Poseidon), Jason-1 (TOPEX follow-on), and QuikScat/Seawinds (Ocean Winds Tracking). The status, background, and plans are given for several batteries: (1) 2.5 inch common pressure vessel (CPV), (2) 3.5 inch CPV, (3) Ni-H2, and (4) Li-Ion.

Timmerman, Paul J.↗
NASA NTRS2008

Apollo Video Photogrammetry Estimation of Plume Impingement Effects

Each of the six Apollo mission landers touched down at unique sites on the lunar surface. Aside from the Apollo 12 landing site located 180 meters from the Surveyor III lander, plume impingement effects on ground hardware during the landings were largely not an issue. The Constellation Project's planned return to the moon requires numerous landings at the same site. Since the top few centimeters are loosely packed regolith, plume impingement from the lander ejects the granular material at high velocities. With high vacuum conditions on the moon (10 (exp -14) to 10 (epx -12) torr), motion of all particles is completely ballistic. Estimates from damage to the Surveyor III show that the ejected regolith particles to be anywhere 400 m/s to 2500 m/s. It is imperative to understand the physics of plume impingement to safely design landing sites for the Constellation Program.

Immer, Christopher↗
NASA NTRS1984

The future of space flight

The history of the NASA space program is traced, and future plans are outlined. Projects discussed include Mercury, Gemini, Apollo, Skylab, Apollo-Soyuz, science-applications spacecraft (Ranger, Surveyor, Mariner, Pioneer, and Voyager), the Space Shuttle, the planned Space Station, orbital maneuvering vehicles, lunar bases, and planetary exploration. Numerous photographs and drawings are provided.

Moore, J. W.↗
NASA NTRS2010

Mars Global Geologic Mapping Progress and Suggested Geographic-Based Hierarchal Systems for Unit Grouping and Naming

We are in the fourth year of a fiveyear effort to map the global geology of Mars at 1:20M scale using mainly Mars Global Surveyor, Mars Express, and Mars Odyssey image and altimetry datasets. Previously, we reported on details of project management, mapping datasets (local and regional), initial and anticipated mapping approaches, and tactics of map unit delineation and description [1-2]. Last year, we described mapping and unit delineation results thus far, a new unit identified in the northern plains, and remaining steps to complete the map [3].

Tanaka, K. L.↗