1,353 reputation
925
bio website ericmenze.com
location Minneapolis, MN
age 30
visits member for 3 years, 3 months
seen 22 hours ago

I'm a Computer (Web) Programmer/Analyst based in Anchorage, AK and Minneapolis, MN. I use (among other things) ASP.NET, C# and SQL Server.

I build things. Bicycles, computers, websites, guitars, cars, motorcycles, sound sytems... lots of things.


Dec
9
comment What would have been required to boost Mir into a stable orbit?
On a side note, it's extremely frustrating that there are more calculators and information available online for doing this in Kerbal Space Program then there are for doing it in our solar system or even Earth.
Dec
9
revised What would have been required to boost Mir into a stable orbit?
Added attempts section
Dec
9
comment What would have been required to boost Mir into a stable orbit?
This is a valid physics question, and phys.SE has a lot more users (potentially submitting answers) than spaceexp.SE.
Dec
9
revised What would have been required to boost Mir into a stable orbit?
added 3 characters in body
Dec
9
revised What would have been required to boost Mir into a stable orbit?
added 3 characters in body
Dec
9
asked What would have been required to boost Mir into a stable orbit?
Sep
11
awarded  Notable Question
Jul
2
awarded  Curious
Apr
23
awarded  Notable Question
Apr
22
comment How to calculate the velocity needed for a rocket to get to a L1 point (escape a body without orbiting)?
If launched from earth's equator, that would give 459 m/s of angular velocity. The moon rotates with 1024 m/s of velocity, so yes the rocket would need to 'add' 566 m/s in the rotational direction of the moon to simply 'Fall In'. However, I'm looking for the rest of the component, and I suspect that one would not need all 566 m/s if some fancy maneuvers were added.
Apr
21
revised Rocket propelled by a giant monochromatic laser
Edited to mark incorrectness
Mar
27
comment How to calculate the velocity needed for a rocket to get to a L1 point (escape a body without orbiting)?
And, (finalish question) - if I got a small rocket precisely to L1 and used the surface rotation timing, how much velocity/energy would it take for lunar capture? Or would it just speed past the moon unless slowed down significantly? Would it need to get much closer to the moon than L1 to actually be captured with the KE from earth's rotation?
Mar
27
accepted How to calculate the velocity needed for a rocket to get to a L1 point (escape a body without orbiting)?
Mar
27
comment How to calculate the velocity needed for a rocket to get to a L1 point (escape a body without orbiting)?
Also, one of the things I'm confused about is atmospheric orbital speed: if the balloon setup sat at 100km altitude for long enough to synchronize with the atmosphere at that height (what little of it there is); would it speed up to the orbital rotation at that height (I.E. track the same geostationary location once settled), or slow down, or ?
Mar
27
comment How to calculate the velocity needed for a rocket to get to a L1 point (escape a body without orbiting)?
Nailed it. Would this be correct for solar gravity inclusion: $V_e = −Gm(\frac {M_e} {r_e} + \frac {M_l} {LD−r_e} + \frac {M_s} {SD-r_e})$ and $V_{L1} = −Gm(\frac {M_e} {d_{L1}} + \frac {M_l} {LD−d_{L1}} + \frac {M_s} {SD-d_{L1}})$ ?
Mar
25
comment Can relativistic momentum (photons) be used as propulsion for 'free' after the initial generation?
But the mass of the mirror is not infinite, and so with enough photons, you could move the mirror (as the other SO question alludes to), correct?
Mar
24
comment Can relativistic momentum (photons) be used as propulsion for 'free' after the initial generation?
So light bouncing off a mirror selectively transfers energy only if they aren't attached?
Mar
24
comment Can relativistic momentum (photons) be used as propulsion for 'free' after the initial generation?
I see, so energy would need to be added to keep the thrust constant. Does a laser get redshifted every time it bounces off something? I.E. if you pointed a green laser between two calibrated mirrors it would eventually be red?
Mar
24
comment Rocket propelled by a giant monochromatic laser
Posted: physics.stackexchange.com/questions/104970/…
Mar
24
asked Can relativistic momentum (photons) be used as propulsion for 'free' after the initial generation?