Recent content by Treva31

Ah cool thanks!

Ah Kerbal doesn't model for Lagrange points :frown:

I have found delta-v maps but none of them include Lagrange points. I have no idea how to calculate it. Any calculations I see are for orbits, which a lagrange point is not an orbit right? I'm not sure if (or which) simulators include lagrange points either. I will try Kerbal I guess.. I am...

What is the delta-v requirements from each of the Earth-Moon lagrange points to landing on the lunar surface? What would be the best software I could use to visualise and calculate that kind of thing? Thanks.

Yes I have tried searching :smile:, couldn't find anything ever built. The same guys were writing papers about it since 1979 though.

Has anyone ever built a functioning superconducting quenchgun? Or has the theory or practicality of it's operation ever been questioned or disproved?

How can I calculate the ACCELERATION of a stationary steel ball after being hit by a moving steel ball. I know how to get the final velocity but how long does it take to accelerate to that velocity from zero? Does it depend on the elasticity of the materials? I guess we need to know long did...

If I had an object in an orbit around the Earth that I kept continually shaded from the sun, how cold would it get? Assuming the shade device was not physically connected to and was sufficiently far away from the object to not radiate any heat to it. And if I actively adjusted how much shade...

Ah ok, VERY interesting! So I might need to make a spreadsheet using this and compare the two to find the lowest second burn value for a reasonable LEO.. (I'm thinking between 300 and 600km)

Awesome thank you so much guys! :smile:

Minimal delta-v on the "second burn" certainly is the aim. The delta-v of the "first burn" doesn't matter at all, happy for it to be inefficient. So does that still mean the first type is better for me? If so let's go with that. Are there names for those 2 types? Thanks.

No not up first. So you shoot from sea level horizontally. Let's say you shoot at the correct speed for a 400km orbit. As the Earth curves away the projectile gains altitude. So it reaches 400km, and let's say it hasn't slowed down at all so it as at the correct speed for a 400km orbit. But it...

But it needs to change the trajectory right? Not just the speed. Can you give an example of what you mean? Launching from sea level and entering a circular orbit at 400km.

I am trying to create a spreadsheet that will calculate: The minimum delta-v required to circularise the orbit of a projectile that has been fired horizontally from the Earths surface at a given velocity. Completely ignoring atmospheric drag. See the attached spreadsheet. The steps are...

I also have a van and would recommend not using battery power for anything big (ie heating or cooling). Use a gas heater or run the engine and use the RV heater. If you have a large invertor it will be very inefficient when being used at a low level. If you really want to do this maybe have 2...