SEARCH · Search NASA
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
This viewgraph presentation discusses NASA's mission and addresses the following questions: 1) What is NASA's mission? 2) Why do we explore? 3) What is out timeline? 4) why the Moon first? 5) What will the vehicles look like? 6) What progress have we made? who will be doing the work? and 7) What are the benefits of space exploration?
This viewgraph is a printout of a presentation which originally contained multimedia components. The presentation summarizes the accomplishments of the Cassini-Huygens mission, with numerous images and video clips of Saturn, its rings, and its moons. The presentation also summarizes a feasibility analysis of the Neptune-Triton Explorer (NExTEP).
This presentation reviews NASA's program of space exploration, including information about NASA's mission, the human urge to explore, the timeline for the development of the exploration, and what NASA plans to explore and prove during the return to the moon. Also include are views of the planned vehicles, and a review of progress to date in the design and construction of the vehicles. Some of the benefits of space exploration are also reviewed.
The U.S. Vision for Space Exploration directs NASA to design and develop a new generation of safe, reliable, and cost-effective transportation systems to hlfill the Nation s strategic goals and objectives. These launch vehicles will provide the capability for astronauts to conduct scientific exploration that yields new knowledge from the unique vantage point of space. American leadership in opening new fi-ontiers will improve the quality of life on Earth for generations to come. The Exploration Launch Projects office is responsible for delivering the Crew Launch Vehicle (CLV) that will loft the Crew Exploration Vehicle (CEV) into low-Earth orbit (LEO) early next decade, and for the heavy lift Cargo Launch Vehicle (CaLV) that will deliver the Lunar Surface Access Module (LSAM) to LEO for astronaut return trips to the Moon by 2020 in preparation for the eventual first human footprint on Mars. Crew travel to the International Space Station will be made available as soon possible after the Space Shuttle retires in 2010.
The U.S. Vision for Space Exploration directs NASA to design and develop a new generation of safe, reliable, and cost-effective transportation systems to hlfill the Nation s strategic goals and objectives. These launch vehicles will provide the capability for astronauts to conduct scientific exploration that yields new knowledge from the unique vantage point of space. American leadership in opening new fi-ontiers will improve the quality of life on Earth for generations to come. The Exploration Launch Projects office is responsible for delivering the Crew Launch Vehicle (CLV) that will loft the Crew Exploration Vehicle (CEV) into low-Earth orbit (LEO) early next decade, and for the heavy lift Cargo Launch Vehicle (CaLV) that will deliver the Lunar Surface Access Module (LSAM) to LEO for astronaut return trips to the Moon by 2020 in preparation for the eventual first human footprint on Mars. Crew travel to the International Space Station will be made available as soon possible after the Space Shuttle retires in 2010.
Explore the source record for details and available documents.
Evaluation of extraterrestrial resources to supply propellants for refueling rockets at various stations during interplanetary flight
An assessment is presented of the results of recent feasibility studies on a low cost dual mission concept, employing a single spacecraft for the sequential, intensive survey of two planets. After establishing the features of a basic lunar-Martian polar orbiting mission in the context of existing spacecraft and propulsion technology, an examination of trajectory options shows that an earth return maneuver allows the application of the same concept to lunar-asteroid missions and offers substantial savings for the lunar-Martian mission. The implications of Centaur availability for extension of this concept to main-belt asteroids and to tripple missions are considered, along with questions of cost and reliability.
The physical, chemical, and atmospheric characteristics of the silicate planets and satellites are surveyed in terms of their effects on the volcanic evolution of the surfaces of these bodies. The equations relating the parameters affecting magma ascent through the crust and eruption are analyzed, and three major types of eruption are characterized: effusive, steady explosive, and unsteady explosive. This analytical framework is then used to predict the nature of volcanic activity on each of the planets and satellites, and the predictions are compared with actual observations. Outstanding problems are discussed, with emphasis on the need for a general model of planetary interior dynamics applicable to bodies with varying degrees of interior viscosity, mantle activity, and lithospheric plate tectonics.
Measuring the fluxes of thermal and epithermal neutrons at a planetary object in conjunction with gamma-ray spectroscopic observations will provide information about the chemical composition of the surface which is less model dependent than the gamma ray measurements by themselves. Researchers devised a passive neutron detector for this purpose. An experimental model was designed and built. Three variables provided the basis for a set of experiments: thickness of the Sm and B layers, the presence or absence of the ACS, and the position of the source relative to the PND's cylindrical axis. Experimental results are given.
The Space Exploration Initiative (SEI) calls for lunar and Martian exploration missions for which solid-core nuclear thermal rockets (NTRs), in virtue of their single-stage, fully-reusable nature, are ideally suited. NTRs promise double the specific impulse of chemical propulsion. A lunar mission employing a reusable NTR is currently being conducted by NASA. The NTR would be assembled in LEO in such a way that it remained 'radioactively cold' during earth-to-orbit deployment by a heavy-lift chemical booster, and therefore presented no radioactive hazard. Also under consideration is a particle-bed reactor in which the hydrogen propulsive fluid directly cools coated-particle fuel spheres.
This presentation presents the goals of the Vision for Space Exploration. It gives a general overview of the Ares I and Ares V launch vehicles and shows how they enable NASA's lunar exploration missions. It explains how space exploration can inspire the next generation of explorers.
It is possible to create a consistent trade methodology that can characterize operations model alternatives for crewed exploration missions. For example, a trade-space that is organized around the objective of maximizing Crew Exploration Vehicle (CEV) independence would have the input as a classification of the category of analysis to be conducted or decision to be made, and a commitment to a detailed point in a mission profile during which the analysis or decision is to be made. For example, does the decision have to do with crew activity planning, or life support? Is the mission phase trans-Earth injection, cruise, or lunar descent? Different kinds of decision analysis of the trade-space between human and automated decisions will occurs at different points in a mission's profile. The necessary objectives at a given point in time during a mission will call for different kinds of response with respect to where and how computers and automation are expected to help provide an accurate, safe, and timely response. In this paper, a consistent methodology for assessing the trades between human and automated decisions on-board will be presented and various examples discussed.
In this talk, I will summarize how the NASA Ames Intelligent Robotics Group has been developing and field testing planetary robots for human exploration, creating automated planetary mapping systems, and engaging the public as citizen scientists.
No abstract available
No abstract available