To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

Venus Orbiting Imaging Radar

From Wikipedia, the free encyclopedia

Venus Orbiting Imaging Radar (VOIR) illustration

Venus Orbiting Imaging Radar (VOIR; also called Venus Orbital Imaging Radar) was a planned 1983 U.S. spacecraft mission to Venus that was primarily intended to use a microwave imaging radar to perform mapping of the Venusian surface. The goal was to map up to 50% of the planet's surface down to a resolution of 2 km with the eventual goal of targeting landers and atmospheric probes.[1] A 1978 study evaluated the potential use of synthetic aperture radar to achieve 200 meter resolution.[2] The spacecraft was to be launched from the Space Shuttle using a twin stage IUS in December 1984, and arrive in orbit May 1985. The mission was expected to last until November 1985.[3]

By 1981, the plan was for the spacecraft to launch in 1987 and to use aerobraking to circularize its orbit, whereupon it would be able to generate radar coverage of the entire planet over a period of 126 days. Data transmission rates were 1 Mbit per second, matching the imaging and recording speed. It would have two resolutions: mapping mode of 600 m per line-pair, then a high-resolution mode at 150 m per line-pair.[4]

The mission was cancelled in 1982 when it exceeded its budget limit. In 1983, it was replaced by a less ambitious mission called the Venus Radar Mapper, which was later renamed Magellan.[5]

YouTube Encyclopedic

  • 1/3
    Views:
    368
    35 998
    667 086
  • Magellan (spacecraft) - Video Learning - WizScience.com
  • 5 AWESOME Facts About Mercury That Will Blow Your Mind!
  • Light: Crash Course Astronomy #24

Transcription

References

  1. ^ Rose, J. R.; Friedman, L. D. (1975), "Design for a Venus orbital imaging radar mission", Journal of Spacecraft and Rockets, 12: 106–112, Bibcode:1975JSpRo..12..106R, doi:10.2514/3.56954.
  2. ^ Arens, W. E. (1978), "Real-time SAR image processing onboard a Venus orbiting spacecraft", Proceedings of the 1978 Synthetic Aperture Radar Technology Conference 16, Bibcode:1978sart.confR....A.
  3. ^ Brown, C. D.; Frank, R. E. (1980), "Venus Orbital Imaging Radar (VOIR) mission: a further step in the exploration of Venus", Acta Astronautica, 7: 519–529, Bibcode:1980AcAau...7..519B, doi:10.1016/0094-5765(80)90041-7.
  4. ^ Leberl, F. W. (August 1981), "The Venus Orbital Imaging Radar / VOIR Mission", The Solar System and its Exploration, Proceedings of the Alpach Summer School Conference, p. 189, Bibcode:1981ESASP.164..189L.
  5. ^ Evans, Ben (2012), Tragedy and Triumph in Orbit: The Eighties and Early Nineties, Springer Science & Business Media, p. 552.
This page was last edited on 9 January 2024, at 18:13
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.