could use some technical checks

While the editorial comments can be interesting, what I really need is confirmation that I havent screwed up the analysis and calculations somehow. I know its real work to figure out how to do the calcs and do them, but I would really appreciate it if someone would.

BTW: the mass doesnt matter. Dont know what I was thinking. Only the cross-sectional area, altitude, and reaction mass exhaust velocity are needed for calculating mass of the reaction mass.

On Jul 3, 2014, at 11:56 AM, john strickland wrote:

> I would no sooner put a space habitat in LEO than I would put an ice cream cone in an oven.
> This is an incompatible location for several reasons.
> If abandoned, the strong structure required by a colony would partially survive re-entry and cause damage on the Earths surface.
> Until the space debris problem in LEO is cleaned up, impacts on the large surface area of the colony would greatly add to the debris problem.
> John
>
> At 01:21 PM 7/3/2014, Al Globus wrote:
>> Suppose you have an object in orbit that requires a force of 0.0001356 mkg/sec2 for a full year. How much reaction mass do you need at 40,000 m/sec reaction mass velocity?
>>
>> Note: the application is keeping a small space settlement (Kalpana One) in LEO without the orbit degrading.
>> Params:
>> Area or cross section 162.5000 m2 (250 m x 315 m cylinder in the worst attitude, the area of the thermal arrays is ignored for now)
>> mass 1,805,500 tons (2 tons shielding per m2)
>> altitude 700 km (circular orbit)
>>
>> Note: I used
>> http://spacience.blogspot.com/2012/03/howto-calculate-drag-in-leo-using.html
>> for the methodology (but not the code), but using a different approach would be helpful

BTW: the mass doesnt matter. Dont know what I was thinking. Only the cross-sectional area, altitude, and reaction mass exhaust velocity are needed for calculating mass of the reaction mass.
On Jul 3, 2014, at 11:56 AM, john strickland <
jkstrickl@...
> wrote:
I would no sooner put a space habitat in LEO than I would put an icecream cone in an oven.
This is an incompatible location for several reasons.
If abandoned, the strong structure required by a colony would partiallysurvive re-entry and cause damage on the Earths surface.
Until the space debris problem in LEO is cleaned up, impacts on the largesurface area of the colony would greatly add to the debris problem.
John
At 01:21 PM 7/3/2014, Al Globus wrote:
Suppose you have an object inorbit that requires a force of 0.0001356 mkg/sec2 for a full year. How much reaction mass do you need at 40,000 m/sec reaction massvelocity?
Note: the application is keeping a small space settlement (Kalpana One)in LEO without the orbit degrading.
Params:
Area or cross section 162.5000 m2 (250 m x 315 m cylinder in the worstattitude, the area of the thermal arrays is ignored for now)
mass 1,805,500 tons (2 tons shielding per m2)
altitude 700 km (circular orbit)
Note: I used
http://spacience.blogspot.com/2012/03/howto-calculate-drag-in-leo-using.html
for the methodology (but not the code), but using a differentapproach would be helpful