#### James.Denholm

##### Addon ponderer

I need some help. Specifically, I need some formulas. If you know your maths, read on.

First of all:

Formulas relating to the Energy Project, which is a launch vehicle by Kulch.

I know that these would be better placed at the main Orbiter forums, but M6 doesn't have a good track record, if you know what I mean. NOTE: If you know of a better launch vehicle, please tell me.

1: Is their a formula to figure out the Minimum Point-of-Release Distance (in degrees) in relation to the orbit altitude (set in the launch dialog)? (See Fig1, Min PoRD = Minimum Point-of-release Distance)

2: Is there a formula to work out the time from launch to release? Or is it the same for all launches?

Secondly:

General Formulas

1: Is there a way of working out if a radius from a certain point (Point 1 in Fig2) crosses an orbit (Target Orbit in Fig2)?

2: Is there a way of working out the altitudes and co-ordinates of those 2 (or more) points (X Point 1 & 2 in Fig2)?

3: Is there a way of working out how many degrees it is from a certain point (X Point 1 or 2 in Fig2) to a major part of the orbit (say, the apoasis or pheparsis (sorry, can't spell))?

4: Is there then a way of working out how far back (in degrees) a craft would be, x seconds before reaching a certain point (X Point 1 or 2 in Fig2)? In other words, how would I figure out the average speed (degrees per second) of a craft over a section of it's orbit, from, say, Point X - 90 degrees to Point X?

5: How do I figure out the Relative Velocity of two vessels that don't have orbits at the same inclination? (This question doesn't matter so much)

For those confused, don't worry.

For those who answer, thanks.

First of all:

Formulas relating to the Energy Project, which is a launch vehicle by Kulch.

I know that these would be better placed at the main Orbiter forums, but M6 doesn't have a good track record, if you know what I mean. NOTE: If you know of a better launch vehicle, please tell me.

1: Is their a formula to figure out the Minimum Point-of-Release Distance (in degrees) in relation to the orbit altitude (set in the launch dialog)? (See Fig1, Min PoRD = Minimum Point-of-release Distance)

2: Is there a formula to work out the time from launch to release? Or is it the same for all launches?

Secondly:

General Formulas

1: Is there a way of working out if a radius from a certain point (Point 1 in Fig2) crosses an orbit (Target Orbit in Fig2)?

2: Is there a way of working out the altitudes and co-ordinates of those 2 (or more) points (X Point 1 & 2 in Fig2)?

3: Is there a way of working out how many degrees it is from a certain point (X Point 1 or 2 in Fig2) to a major part of the orbit (say, the apoasis or pheparsis (sorry, can't spell))?

4: Is there then a way of working out how far back (in degrees) a craft would be, x seconds before reaching a certain point (X Point 1 or 2 in Fig2)? In other words, how would I figure out the average speed (degrees per second) of a craft over a section of it's orbit, from, say, Point X - 90 degrees to Point X?

5: How do I figure out the Relative Velocity of two vessels that don't have orbits at the same inclination? (This question doesn't matter so much)

For those confused, don't worry.

For those who answer, thanks.