3 edition of Regenerative fuel cell study for satellites in GEO orbit found in the catalog.
Regenerative fuel cell study for satellites in GEO orbit
by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC], [Springfield, Va
Written in English
|Statement||Leslie Van Dine, Olga Gonzales-Sanabria, Alexander Levy.|
|Series||NASA technical memorandum -- 89914.|
|Contributions||Gonzales-Sanabria, Olga., Levy, Alexander., United States. National Aeronautics and Space Administration.|
|The Physical Object|
In the present study, we combine the PEFC with an electrolyzer in order to realize a regenerative fuel cell. Ideally, if a single cell can be operated as a fuel cell and the cell can be made reversible through the electrolysis reaction, then compact, lightweight . A United Launch Alliance Atlas V rocket launched two U.S. Air Force satellites into orbit Saturday (April 14), setting the stage for improved military satellite communications and a new generation Author: Samantha Mathewson.
1. Introduction. Artificial satellites are subjected to a large number of perturbations which affect its Keplerian orbit. Among the most important perturbation effects we must mention, in order of magnitude, the geopotential perturbation, the Moon and Sun gravitational fields and direct solar radiation pressure, indirect radiation pressure, relativistic effects and atmospheric drag,,,,,,.Cited by: 3. MEO and GEO satellites tend to be appropriate for real-time and high bandwidth purposes such as communications and satellite TV. A number of proposed constellations have made headlines for internet services from LEO; there is certainly a significant amount of money going into the challenge and the technology is non-trivial.
A geostationary orbit, also referred to as a geosynchronous equatorial orbit (GEO), is a circular geosynchronous or kilometres (22, miles) above Earth's equator and following the direction of Earth's rotation.. An object in such an orbit has an orbital period equal to the Earth's rotational period, one sidereal day, and so to ground observers it appears motionless, in a . A geostationary orbit (also known as a geostationary Earth orbit, geosynchronous equatorial orbit, or simply GEO) is a circular orbit located at an altitude of 35, kilometers (22, miles) above the surface of Earth with zero inclination to the equatorial plane. A satellite in this orbit is known as a geostationary satellite, and has an.
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Regenerative Fuel Cell Study for Satellites in GEO Orbit Alexander Levy, Leslie L. Van Dine, and James K. Stedman International Fuel Cells Corporation South Windsor, Connecticut July Prepared for Lewis Research Center Under Contract NAS (_AS&C[_C9) _IVt FCiEL CBI, L STUDY POR 5ATEL£I_ES IE GE_ C_EI_ FinalFile Size: 2MB.
Regenerative Fuel Cell Study for Satellites in GEO Orbit (NASA-TM 14) GEGEIEBATIVE EUEL CELL S1UDX FOB SATELLS'IES I13 GEC UBEIl (NASA) 8 p Avail: BlTIS E(: AOZ/OZ A01 CSCL 10B h. N 10 Unclas H1/44 Leslie Van Dine International Fuel Cells South Windsor, Connecticut Olga Gonzalez-Sanabria Lewis Research Center.
Get this from a library. Regenerative fuel cell study for satellites in GEO orbit. [Alexander Levy; Leslie Van Dine; James K Stedman; Lewis Research Center.]. 35 Regenerative fuel cell energy storage system for a low earth: 36 Regenerative fuel cell study for satellites in GEO orbit [mi: 37 Status of commercial fuel cell powerplant system development: 38 High temperature solid oxide regenerative fuel cell for sola: Regenerative fuel cells (RFCs) are enabling for many weight-critical portable applications, since the packaged specific energy (> Wh/kg) of properly.
A typical hydrogen fuel cell combines hydrogen from a tank and oxygen from the air to produce electricity, leaving water and heat as its only byproducts. A regenerative fuel cell also works in reverse, using electricity to divide the water into hydrogen and oxygen, which are fed back into the fuel cell to produce more electricity.
Van Dine, L. and Gonzalez-Sanabria, O. () Regenerative fuel cell study for satellites in GEO orbit, Proceedings of the 22nd IECEC, – Google Scholar Cited by: 2. What is Orbit. Orbit is the path of a body as it moves under the influence of a second body.
An example is the path of a planet or comet as it moves around the Sun. Planets and satellites that. Geosynchronous Orbits. A geosynchronous orbit is an orbit around the Earth that has a time period of one day. More simply, this means that a satellite. Satellites generally do need both fuel and power.
Of course you need a lot of fuel (in the rocket) to get the satellite into orbit. Once the satellite is in orbit it needs: * Fuel: (typically chemical) to maintain the satellite in its corr. cheaper to put them in orbit - less energy needed 2. greater detail can be seen on the Earths surface - good for mapping 3.
signal strength will have a higher intensity on the Earths surface 4. can cover the whole of the Earths surface in their orbits - not fixed above one point. book on space travel, it was the science fiction writer Arthur C.
Clark who popularized the idea of geo-satellites for radio communication in The first near earth satellite (Sputnik) was launched in and the first successful geosynchronous satellite (Syncom2) was placed into earth orbit in Since that time hundreds of theseFile Size: KB.
Fuel Cell Characteristics • Output voltage per cell volts in practice • Consumes hydrogen and oxygen, produces water as by-product (1 Pint/kW h) • High specific power ( W/kg) • Shuttle fuel cells produce 16 kW peak • Reaction is reversible so regenerative fuel cells are possible.
Regenerative Fuel Cell Study for Satellites in GEO Orbit. Leslie Van Dine First Page; PDF; PDF Plus; No Access Regenerative Fuel Cell Systems for Mid-To High-Orbit Satellites. R.K. Taenaka, E. Adler, E.J. Stofel and; K.B. Clark; AIAA Performance of Ni/H 2 Cells for Battery-Powered Electric Propulsion Operation in GEO.
A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day).The synchronization of rotation and orbital period means that, for an observer on Earth's surface, an object in geosynchronous orbit returns to exactly the same position in the.
By finding a way to build "solid oxide" fuel cells that operate at half the temperature of current designs째C instead of a blistering 1,째C--researchers at the Texas Center for Superconductivity and Advanced Materials (TcSAM) at the University of Houston hope to make this kind of fuel cell both cheaper to manufacture and easier to fuel.
Start studying Physics Ch. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Once a satellite is in orbit (which requires a lot of energy; just look at the size of rockets: they aren't that big just to get the satellite up there.
Most of the propellant is actually spent to accelerate the payload to orbital velocity) it doe. This videos explains how to determine the total mechanical energy of needed to launch a satellite into geosynchronous orbit around the Earth.
The change in energy of the satellite is the. American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA.
I understand that it still requires fuel to keep it in a stable orbit. But, yes, when it final reaches its intended circular GEO orbit, and they are done adjusting the apogee and perigee.
$\endgroup$ – Stu Nov 26 '13 at Here's a winner from Why Satellites Stay in Orbit, by Sune Engelbrekston and illustrated by Lee 's a very short book that does a terrific job of explaining precisely one thing: why.
Regarding power beaming from satellites at GEO to the Earth’s surface: “The atmosphere has two bandwidth width windows though which it is possible to beam power between space and the surface efficiently, and outside of which atmospheric absorption will kill you: (1) a microwave window, of which the GHz frequency (~ 12 centimeter wavelength) employed .