Subscribe free to our newsletters via your
. 24/7 Space News .




Subscribe free to our newsletters via your




















Nuclear Power In Space - Part 2

We can also now envisage the engineering particulars of a nuclear rocket engine for a reusable lunar tug. In one trip, using such an engine, the tug could deliver up to 10 tons of cargo to the Moon's surface. This would be enough not only to establish a permanent habitable base there, but also to deliver equipment for the production of "lunar" oxygen.
by Yury Zaitsev
Moscow, Russia (RIA Novosti) Aug 16, 2007
Nuclear power could greatly contribute to spacecraft capabilities. The Soviet Union first developed nuclear powered generators for spacecraft in the 1960s. Since 1970 it has launched more than 30 military radar satellites equipped with the Buk unit, which can generate up to 3 kW of electricity.

In 1987-1988, the Topol unit (Topaz), with a generating capacity of 6 kW, was successfully flight-tested. Some of its power drove the craft's electric jet engines, making nuclear jet propulsion a reality for the first time.

The Yenisei (Topaz-2) also underwent all mandatory tests.

Efforts were made to develop nuclear powered generators ranging from a few kW to tens of MW, as well as energy converters, including mechanical ones.

But in 1990 Russia stopped work on nuclear spacecraft due to the deteriorating economic situation in the country.

It took professionals almost ten years to realize that their decision was putting the country at risk and could threaten its security.

In 1999, a special program was adopted to develop basic dual-capable technologies for use on spacecraft as both power and propulsion sources. The program was intended to improve the country's defense, scientific and economic capabilities, and gave priority to defense.

One of the most pressing tasks at the moment is detailed round-the-clock monitoring of vast swathes of territory. Such monitoring is best done from geostationary orbit. But the power requirements are so stupendous (45-50 kW) and the weight of the craft so great (9-10 tons) that even an Angara heavy rocket would be unable to put such a craft into orbit.

A transport energy module using nuclear power (a sort of booster unit) could be the solution. It could both help put the craft into orbit and power its onboard systems once there.

Nuclear power could also thoroughly alter the character of deep-space missions. Nuclear-electric jet engines will make it possible to establish unmanned interplanetary stations to observe the bodies of the solar system from vantage points so far unattainable. Such engines will speed up freight travel and reduce delivery times. They will also straighten trajectories, rid flight programs of the need for gravity maneuvers, shorten travel periods, and widen "launch windows."

Another area of application will be planet-based power plants. Estimates show that first expeditions to Mars will require between 50 and 100 kW of power to carry out their tasks on the planet's surface (including the generation of fuel from local sources for a return to Earth).

Russian engineers have designed a series of such planet-based plants, using either a thermo-emissive converter reactor or a lithium-cooled reactor with a turbine energy converter.

We can also now envisage the engineering particulars of a nuclear rocket engine for a reusable lunar tug. In one trip, using such an engine, the tug could deliver up to 10 tons of cargo to the Moon's surface. This would be enough not only to establish a permanent habitable base there, but also to deliver equipment for the production of "lunar" oxygen.

A string of several compact nuclear generators from the lunar craft could be used as a propulsion unit for a Martian vehicle. A Martian expedition could also take advantage of a combined nuclear-driven propulsion and power-generating system able to generate up to 25 kW on top of providing thrust.

More and more countries are showing interest in compact-sized sources of nuclear power for use in space projects. The European Union and China are particularly energetic in pursuing nuclear space technologies. Also important is the fact that there are already a number of problems in space exploration that are impossible to solve without nuclear technology.

Yury Zaitsev is an academic adviser at the Academy of Engineering Sciences.

The opinions expressed in this article are the author's and do not necessarily represent those of RIA Novosti.

Source: RIA Novosti

Community
Email This Article
Comment On This Article

Related Links
Nuclear Space Technology at Space-Travel.com



Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


Outside View: Nuclear future in space
Moscow (UPI) Aug 14, 2007
Solar energy supplies most of power in spacecraft nowadays. (Yury Zaitsev is an academic adviser at the Academy of Engineering Sciences. This article is reprinted by permission of RIA Novosti. The opinions expressed in this article are the author's and do not necessarily represent those of RIA Novosti.) (United Press International's "Outside View" commentaries are written by outside contributors who specialize in a variety of important issues. The views expressed do not necessarily reflect those of United Press International. In the interests of creating an open forum, original submissions are invited.)







  • ATK Receives To Develop And Support Test Flights For NASA's Ares I Crew Launch Vehicle First Stage
  • NASA Issues Draft Environmental Impact Statement For Constellation Programme
  • US teacher gives first lesson from space
  • Undersea Mission Aids Development Of Self-Test For Stress And Fatigue

  • What Makes Mars Magnetic
  • Phoenix Adjusts Course Successfully For Journey To Mars
  • Helping Phoenix Land
  • Brighter Skies Lifts Rover Spirit As MER-A Gets Active

  • Lockheed Martin Marks 33rd Consecutive A2100 Success With The Launch Of BSAT-3A
  • Ariane 5 - Third Dual-Payload Launch Of 2007
  • Russian Proton-M Rocket To Launch Japanese Telecoms Satellite
  • ILS to Launch Inmarsat Satellite On Proton Vehicle Next Spring

  • China Develops Beidou Satellite Monitoring System
  • DigitalGlobe Announces Launch Date For WorldView-1
  • Radar reveals vast medieval Cambodian city: study
  • Satellite Tracking Will Help Answer Questions About Penguin Travels

  • Outbound To The Outerplanets At 7 AU
  • Charon: An Ice Machine In The Ultimate Deep Freeze
  • New Horizons Slips Into Electronic Slumber
  • Nap Before You Sleep For Your Cruise Into The Abyss Of Outer Sol

  • Star Light, Star Bright: FSU Facility Duplicating Conditions Of Supernovas
  • Johnny Appleseed Of The Cosmos
  • Scientists marvel at 'tail' of speeding star
  • New Clues To Early Sol

  • SSTL To Develop Low Cost Lunar Orbiter For NASA
  • China plans to survey 'every inch' of moon
  • Seeing The Moon Anew
  • NASA Selects Astrophysics Projects For New Science On The Moon

  • Galileo To Support Global Search And Rescue
  • Car Satellite Navigation Systems Can Be Steered The Wrong Way
  • ShoZu One-Click Image Upload Service To Be Embedded In Samsung Handsets
  • Cell Phones And PDAs Revolutionize How Consumers Find Homes On REALTOR.com

  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2007 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement