Tommy
Well-known member
Here is link you will find useful:
[ame="http://www.orbithangar.com/searchid.php?ID=4142"]IMFD Full Manual/Playbacks[/ame]
This manual, and the annotated playbacks will teach you how to use IMFD to get anywhere you want to go.
There is a process I came up with that is included in that manual. I forget exactly where, somewhere around page 14 - 16. It's in blue text, if I recall.
This process is fairly simple, and repeatable, and will work for any trip that Target Intercept can make. The manual also has charts with Src, Ref, and TGT settings for any possible trip.
I'm not at home, but I'l try to sumarize from memory.
Open IMFD on the left and select IMFD. I like to change the main config page a bit - I'll turn GET to MJD for interplanetary trips.
Open IMFD on the right, and set it to share with the left (ID 0). just leave this for now.
Set the left MFD to Target Intercept and set your target (Venus). This should auto set the Reference as the Sun, and Earth as the source. If not, set them that way.
1. Make sure TOF is locked, and begin adjusting the TEj. I like to use 10x adjustments and adjust the MJD under TEj. Adjust to find the lowest total dV, at least 10k from now. Likely, you won'r be right on top of the window, so don't be alarmed if it takes "months" to get the lowest TEj.
2. Once you have a low dV, unlock the TOF. Now begin adjusting the TIn to minimize dV.
3. After that, adjust (use one day increments) the TEj again, then the TIn, again.
4. Repeat step 3 to until you have minimized dV as much as you can.
5. Open Surface Launch on the right, and set it to "plan" (or "course").
6. You will usually want to launch the first time T = 0, but AFTER TEj (in Target Intercept) goes below 70k (for this trip). Launch using the heading shown (should be 90 at T = 0, and watch the EIn once you are above 4km/s velocity - try to minimize with small banks or turns.
7. Once in parking orbit, set right MFD to Orbit Eject and set it to "course". Set the TEj shown there to the same as the TEj shown in Target Intercept. Then adjust the TEj shown in Orbit Eject until dV (shown in Orbit Eject) is minimized.
8. Engage the Autoburn in Orbit Eject (not Target Intercept).
9. Once Orbit Eject says "have a nice voyage", set the SRC in Target Intercept to "x" (sets to self).
10. About halfway there, Hit the AB in Target Intercept to make your first MCC. Keep doing that every time the remaining distance halves (So at 1/2 way, 3/4, 7/8, etc).
11 When you are within about 3 - 4 times the SOI of Venus, open Planet Approach on the left, and use it to make MCC'S from there on. Once your PeA is at the right altitude (I'd try 500k for Venus) open Orbit Insert and presss it's AB.
The manual has more detail, but there are a couple errors in the slingshot and target offsetting sections. The rest is a "must have" for anyone wanting to learn IMFD.
[ame="http://www.orbithangar.com/searchid.php?ID=4142"]IMFD Full Manual/Playbacks[/ame]
This manual, and the annotated playbacks will teach you how to use IMFD to get anywhere you want to go.
There is a process I came up with that is included in that manual. I forget exactly where, somewhere around page 14 - 16. It's in blue text, if I recall.
This process is fairly simple, and repeatable, and will work for any trip that Target Intercept can make. The manual also has charts with Src, Ref, and TGT settings for any possible trip.
I'm not at home, but I'l try to sumarize from memory.
Open IMFD on the left and select IMFD. I like to change the main config page a bit - I'll turn GET to MJD for interplanetary trips.
Open IMFD on the right, and set it to share with the left (ID 0). just leave this for now.
Set the left MFD to Target Intercept and set your target (Venus). This should auto set the Reference as the Sun, and Earth as the source. If not, set them that way.
1. Make sure TOF is locked, and begin adjusting the TEj. I like to use 10x adjustments and adjust the MJD under TEj. Adjust to find the lowest total dV, at least 10k from now. Likely, you won'r be right on top of the window, so don't be alarmed if it takes "months" to get the lowest TEj.
2. Once you have a low dV, unlock the TOF. Now begin adjusting the TIn to minimize dV.
3. After that, adjust (use one day increments) the TEj again, then the TIn, again.
4. Repeat step 3 to until you have minimized dV as much as you can.
5. Open Surface Launch on the right, and set it to "plan" (or "course").
6. You will usually want to launch the first time T = 0, but AFTER TEj (in Target Intercept) goes below 70k (for this trip). Launch using the heading shown (should be 90 at T = 0, and watch the EIn once you are above 4km/s velocity - try to minimize with small banks or turns.
7. Once in parking orbit, set right MFD to Orbit Eject and set it to "course". Set the TEj shown there to the same as the TEj shown in Target Intercept. Then adjust the TEj shown in Orbit Eject until dV (shown in Orbit Eject) is minimized.
8. Engage the Autoburn in Orbit Eject (not Target Intercept).
9. Once Orbit Eject says "have a nice voyage", set the SRC in Target Intercept to "x" (sets to self).
10. About halfway there, Hit the AB in Target Intercept to make your first MCC. Keep doing that every time the remaining distance halves (So at 1/2 way, 3/4, 7/8, etc).
11 When you are within about 3 - 4 times the SOI of Venus, open Planet Approach on the left, and use it to make MCC'S from there on. Once your PeA is at the right altitude (I'd try 500k for Venus) open Orbit Insert and presss it's AB.
The manual has more detail, but there are a couple errors in the slingshot and target offsetting sections. The rest is a "must have" for anyone wanting to learn IMFD.
