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Moving Hubble to 51.6 degrees (near ISS)
Anyone know the delta-V to move Hubble to 51.6 degrees (while keeping
it near 600 km altitude). What would be the amount of required propellant, assuming a 300 sec ISP engine? |
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Moving Hubble to 51.6 degrees (near ISS)
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Moving Hubble to 51.6 degrees (near ISS)
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Moving Hubble to 51.6 degrees (near ISS)
I worked out the numbers:
Assuming an ion engine with a thrust of 1 N (about a 5th of a pound) it would take about a year to move the Hubble and the propellant mass would be about 40kg. The electrical power used would be 100kW Zoltan |
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Moving Hubble to 51.6 degrees (near ISS)
Zoltan Szakaly wrote:
(Patrick Marsden) wrote in message . com... (Explorer8939) wrote in message . com... Anyone know the delta-V to move Hubble to 51.6 degrees (while keeping it near 600 km altitude). What would be the amount of required propellant, assuming a 300 sec ISP engine? Heck, Since the hubble is already in orbit, you could easily move it with a solar powered electric propulsion package, having an Isp of 100,000 or something. You could move it with a less than 100 kg ion engine add-on. I haven't actually worked out the numbers but I know that we have ion engines that have been flight tested and the Hubble already has solar panels in place. We don't care if it takes a year to get to the new orbit. Zoltan Out of curiousity, how would you attach the engine to Hubble? |
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Moving Hubble to 51.6 degrees (near ISS)
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Moving Hubble to 51.6 degrees (near ISS)
Why glue of course : ). The HST has docking points to be held on to by
the Shuttle's arm, and these are designed to take fairly large loads used to maneuver the telescope for servicing. A more difficult problem is that I do not think the HST has a "cigar lighter plug" on it to allow a connection to its power system. Most of the electrical system is internal with very secure connectors designed to be worked on by hand. Any maneuvering vehicle would have to supply all of it's own power and propulsion. Does someone know what the delta-v is required to change orbital plane from the HST orbit to the 56 degree space station orbit? In article , Charles Buckley wrote: Zoltan Szakaly wrote: (Patrick Marsden) wrote in message . com... (Explorer8939) wrote in message e.com... Anyone know the delta-V to move Hubble to 51.6 degrees (while keeping it near 600 km altitude). What would be the amount of required propellant, assuming a 300 sec ISP engine? Heck, Since the hubble is already in orbit, you could easily move it with a solar powered electric propulsion package, having an Isp of 100,000 or something. You could move it with a less than 100 kg ion engine add-on. I haven't actually worked out the numbers but I know that we have ion engines that have been flight tested and the Hubble already has solar panels in place. We don't care if it takes a year to get to the new orbit. Zoltan Out of curiousity, how would you attach the engine to Hubble? |
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Moving Hubble to 51.6 degrees (near ISS)
"Jorge R. Frank" wrote in message ... (Zoltan Szakaly) wrote in m: I worked out the numbers: Assuming an ion engine with a thrust of 1 N (about a 5th of a pound) it would take about a year to move the Hubble and the propellant mass would be about 40kg. The electrical power used would be 100kW Hubble's solar panels provide about 5.27 kW. 100 kW is more electrical power than ISS has at Assembly Complete. That's a lot of solar arrays. And if you added that many, a) your mass goes up and b) your drag goes up. -- JRF Reply-to address spam-proofed - to reply by E-mail, check "Organization" (I am not assimilated) and think one step ahead of IBM. |
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Moving Hubble to 51.6 degrees (near ISS)
"Jorge R. Frank" wrote in message ...
(Zoltan Szakaly) wrote in m: I worked out the numbers: Assuming an ion engine with a thrust of 1 N (about a 5th of a pound) it would take about a year to move the Hubble and the propellant mass would be about 40kg. The electrical power used would be 100kW Hubble's solar panels provide about 5.27 kW. 100 kW is more electrical power than ISS has at Assembly Complete. That's a lot of solar arrays. Then let's move ISS to Hubble! Just kidding ;-P But I wouldn't mind if ISS went to more launch-friendly latitudes... If only russia could launch Soyuz from French Guyana... |
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