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Tuesday, July 28, 2020 | History

3 edition of Study of multi-kilowatt solar arrays for earth orbit applications found in the catalog.

Study of multi-kilowatt solar arrays for earth orbit applications

Study of multi-kilowatt solar arrays for earth orbit applications

final technical report

  • 252 Want to read
  • 33 Currently reading

Published by Spacecraft Engineering Division, TRW Space & Technology Group, Marshall Space Flight Center, National Aeronautics and Space Administration in Redondo Beach, CA, Huntsville, Ala .
Written in English

    Subjects:
  • Solar concentrators.,
  • Artificial satellites in earth sciences.

  • Edition Notes

    Other titlesStudy of multi kilowatt solar arrays for earth orbit applications.
    Statementprepared by Robert E. Patterson.
    SeriesNASA-CR -- 170939., NASA contractor report -- NASA CR-170939.
    ContributionsTRW Inc. Space and Technology Group., George C. Marshall Space Flight Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18219336M

    With a 10% reversible compressive strain in more than 10 deformation cycles, the shape memory polymer composites (SMPCs) could be used for deployable structure and releasing mechanism. In this paper, without traditional electro-explosive devices or motors/controllers, the deployable SMPC flexible solar array system (SMPC-FSAS) is studied, developed, ground-based tested, and finally on-orbit. Another defining attribute of an object’s orbit around the Sun is its inclination, which is the angle that it makes with the plane of Earth’s orbit—the ecliptic plane. Again, of the planets, Mercury’s has the greatest inclination, its orbit lying at 7° to the ecliptic; Pluto’s orbit, by .

    Testing space-based solar power in space. On the U.S. Air Force launched its secret XB space plane for a long-duration mission in low Earth orbit. However, for this sixth launch of the plane, the Air Force gave some rare details about its cargo—it included a solar panel developed by the Naval Research Laboratory that would be used. The hazard to space operations from debris is a function of the nature of those operations and the orbital region in which they take place. The orbital region is important because the debris flux encountered by a spacecraft varies greatly with orbital altitude and, to a lesser extent, orbital inclination.

      Starboard Solar Array Wing (SAW) Imagery: Today, the crew photographed the inboard SAWs (1A and 3A), the outboard arrays (1B and 3B) and their masts. The photos have been downlinked for team review. The yearly inspection is performed to identify possible structural damage to the solar array components. The solar arrays will always be illuminated, except for short eclipse periods in winter. Proteus uses a GPS receiver for orbit determination and control, which provides satellite position information, and a hydrazine monopropellant system for four 1-Newton thrusters that are .


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Study of multi-kilowatt solar arrays for earth orbit applications Download PDF EPUB FB2

Study of multi-kilowatt solar arrays for Earth orbit applications A miniaturized Cassegrainian concentrator (MCC) solar array concept is being developed with the objective of significantly reducing the recurring cost of multikilowatt solar arrays.

The desired cost reduction is obtained as a result of using very small high efficiency solar cells in conjuction with low cost optics. Study of multi-kilowatt solar arrays for earth orbit applications: final technical report. [Robert E Patterson; TRW Inc. Space and Technology Group.; George C.

Marshall Space Flight Center.]. Study of multi-kilowatt solar arrays for Earth orbit applications - NASA/ADS A miniaturized Cassegrainian concentrator (MCC) solar array concept is being developed with the objective of significantly reducing the recurring cost of multikilowatt solar : R.

Patterson. Study of multi-kW solar arrays for Earth orbit applications: Midterm performance review Abstract Planar and concentrator solar array concepts capable of providing kW to kW in low Earth orbit applications in the time period at an array recurring cost.

Multi-kW solar arrays for Earth orbit applications. Huntsville, Alabama: George C. Marshall Space Flight Center, National Aeronautics & Space Administration, June (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: Lockheed Missiles and Space Company.

Study of multi-kilowatt solar arrays for Earth orbit applications. By R. Patterson. Abstract. A miniaturized Cassegrainian concentrator (MCC) solar array concept is being developed with the objective of significantly reducing the recurring cost of multikilowatt solar arrays.

The desired cost reduction is obtained as a result of using very. Mohammed Bekhti, Messaoud Bensaada, Solar Arrays and Battery Power Sources Conceptual Design for Low Earth Orbit Microsatellites, Engineering and Applied Sciences.

Special Issue: Research on Emerging Technologies in Design and Manufacturing. Vol. 5, No. 3,pp. Solar arrays are becoming an increasingly important means of generating power for earth orbiting spacecraft.

Currently, almost all unmanned earth satellites utilize solar array electrical power generation systems. Applications for solar arrays in the near future include providing power for space shuttle payloads and manned space stations. Earth’s orbit is not a perfect circle, but an ellipse that brings Earth as close askm from the sun, and as far askm from the sun.

To make the math a little easier, astronomers define the average distance between Earth and the sun as one astronomical unit (AU). Chapter 6: Materials for Spacecraft The general knowledge in this chapter is intended for a broad variety of spacecraft: manned or unmanned, low Earth to geosynchronous orbit, cis-lunar, lunar, planetary, or deep space exploration.

Materials for launch vehicles are covered in chapter 7. Materials used in the fabrication of spacecraft hardware should be selected by considering the operational. In this paper, solar array design that is reflected design consideration for Korea LEO (low earth orbit) satellite is introduced.

For verification of design results, we perform the related analysis and test for key requirements. The test results show that design is suitable for usage of space application.

The book describes in detail a highly promising concept - SPS-ALPHA (Solar Power Satellite by means of Arbitrarily Large Phased Array) - and presents a business case comprising applications in space and markets on Earth. The book explains how it is possible to begin now with technologies that are already at hand, while developing the more Reviews: P0 = Solar array power output Psa = Required solar array power for average S/C power for one orbit R = Radius of Earth tc = Battery charging time tcl = Laser battery charging time Te = Eclipse time Td = Time the S/C is in the sun (“day” time) tf = Laser firing time Xcl = Efficiency of electrical path from solar arrays to batteries Xe.

Gs=solar flux ( W/m2) 4 1 cos ⎟ ⎠ ⎞ ⎜ ⎝ =⎛ εσ Gsα θ T The absorbed energy is the solar flux times the area times the absorbtivity times the cosine of the incidence angle.

The solar flux is W/m2 on average around earth, but it depends on the distance from the sun and other factors. Sheila Bailey, Ryne Raffaelle, in Practical Handbook of Photovoltaics (Second Edition), Space solar cells are designed and tested under an air mass zero (AMO) spectrum.

This is in contrast to an air mass as reduced by times the spectral absorbance of the earth's atmosphere, which is the standard condition for testing terrestrial solar cells.

The baseline satellite concept produces about 10 GW of electrical power on the Earth, using a large (10 km by 15 km) solar array located in geosynchronous orbit. The power is transmitted to the Earth by a microwave beam at GHz, and a large (approximately km 2) rectifying antenna (or ‘rectenna’) array at Earth receives the beamed.

Mercury, Venus, Earth, and Mars are the four inner planets of our solar system, but it's only Mercury and Venus who have orbits inside Earth's orbit. As seen from Earth, they seem to move.

With regard to the development of sustainable energy, such as solar energy, in this article we will Study types of solar cells and their applications. Discover the world's research 17+ million members. Space-based solar power (SBSP) is the concept of collecting solar power in outer space and distributing it to ial advantages of collecting solar energy in space include a higher collection rate and a longer collection period due to the lack of a diffusing atmosphere, and the possibility of placing a solar collector in an orbiting location where there is no night.

On earth, solar power is greatly reduced by night, cloud cover, atmosphere and seasonality. Some 30 percent of all incoming solar radiation never makes it to ground level. In space the sun is always shining, the tilt of the Earth doesn't prevent the collection of power and there’s no atmosphere to reduce the intensity of the sun’s rays.

The Earth's distance from the Sun, its elliptical orbit, and its tilted axis all work together to make life on Earth possible. To unlock this lesson you must be a Member. Create your account.Starlink Satellite Constellation of SpaceX. Spacecraft Launch Light Pollution References.

Starlink is a satellite constellation development project underway by SpaceX, to develop a low-cost, high-performance satellite bus and requisite customer ground transceivers to implement a new spaceborne Internet communication system.On Deck for Earth Exploration: Launching inthe twin Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) satellites will build on the Earth climate data record of its successful predecessor, GRACE, which completed its science mission in October after more than 15 years in orbit.