Hi everyone ! I've been a long time reader of this wonderful forum, where I learned almost everything about orbiter. But now, with my little orbinaut experience, I'm stuck with something and it pushes me to write my first message.
I'm trying to do a powered slingshot of Venus, in an Earth-Venus-Mars trip. As I've learned here and there, IMFD (still working on it) isn't efficient in terms of slingshot planning. Though I've already found a window using guess and check in TransX. But here comes a few questions : I don't manage to export my data's from my 'plan" to IMFD, and I really don't understand how to interprate transX plan for each step, in order to use IMFD like a DSKY P30 flight computer :thumbup: and set up the delta velocity program according to transX values. Maybe I'm not reading the correct values, or I missed something.
For instance : on the ground, I would have like to use IMFD to launch, since you can check in real time your Ein. Using the target intercept program, tgt Venus, set Tej and time of encounter according to the transX plan, I have different Rinc and Ein values transX escape plan window and surface launch program.
Again, once in orbit : I've tried to copy the data from the transX escape plan to IMFD in order to do the ejection burn. I've read on the forum many methods, but any of them seem to be working : Copy the total delta-v from the escape plan to the Dvf value in delta velocity program, then set the Tej. according to Time to Pe. from transX. Once burned, I'm off from 15 degrees in S. Maj axis diff. I've also tried to copy each value from the eject plan (prograde, Ch. Plane, outward) to Dvf, dvp and dvf, setting up the Tin to the time to Pe. I beautifully scratched in the Pacific, as IMFD burned straight into the planet.
Last but not least, using the target-intercept program, i finally get on my way to Venus : when i started to plan a MCC, IMFD slingshot program (coupled with Target intercept) gave me 13k Dv to correct my trajectory and perform the sling (and i had to change the Tin at mars from 2 months...)
I've seen on the forum many messages about a combined use of these tools, but I can't find out how to export to IMFD the slingshot attitude. There are tutorials about one or the other, but I didn't find one that described a simultaneous use of IMFD and transX. May anyone help me deal with it ?
Thank you all for your help, have a good weekend.:tiphat:
Potjoe
Edit : adding the scenario file with TransX plan
I'm trying to do a powered slingshot of Venus, in an Earth-Venus-Mars trip. As I've learned here and there, IMFD (still working on it) isn't efficient in terms of slingshot planning. Though I've already found a window using guess and check in TransX. But here comes a few questions : I don't manage to export my data's from my 'plan" to IMFD, and I really don't understand how to interprate transX plan for each step, in order to use IMFD like a DSKY P30 flight computer :thumbup: and set up the delta velocity program according to transX values. Maybe I'm not reading the correct values, or I missed something.
For instance : on the ground, I would have like to use IMFD to launch, since you can check in real time your Ein. Using the target intercept program, tgt Venus, set Tej and time of encounter according to the transX plan, I have different Rinc and Ein values transX escape plan window and surface launch program.
Again, once in orbit : I've tried to copy the data from the transX escape plan to IMFD in order to do the ejection burn. I've read on the forum many methods, but any of them seem to be working : Copy the total delta-v from the escape plan to the Dvf value in delta velocity program, then set the Tej. according to Time to Pe. from transX. Once burned, I'm off from 15 degrees in S. Maj axis diff. I've also tried to copy each value from the eject plan (prograde, Ch. Plane, outward) to Dvf, dvp and dvf, setting up the Tin to the time to Pe. I beautifully scratched in the Pacific, as IMFD burned straight into the planet.
Last but not least, using the target-intercept program, i finally get on my way to Venus : when i started to plan a MCC, IMFD slingshot program (coupled with Target intercept) gave me 13k Dv to correct my trajectory and perform the sling (and i had to change the Tin at mars from 2 months...)
I've seen on the forum many messages about a combined use of these tools, but I can't find out how to export to IMFD the slingshot attitude. There are tutorials about one or the other, but I didn't find one that described a simultaneous use of IMFD and transX. May anyone help me deal with it ?
Thank you all for your help, have a good weekend.:tiphat:
Potjoe
Edit : adding the scenario file with TransX plan
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