Marijn
Active member
Hello all,
I would like some help with IMFD's Surface Launch Program.
The trajectory I am trying to set up comes from NASA's trajectory browser. It's a 192-day trip to Mars. Departe MJD (TMI burn) is 59064.5. Arrival MJD is 59256.5.
In the left MFD, I select the Mars and set these MJD's up in the Course Target Intercept Program. The right MFD is slaved to the left (OpMode Shared ID=0) and the Surface Launch Program is openend and set to OpMode=Course.
The Surface Launch Program has a MJD value in dark-green which can be set. However, I do not see anything changing after modifying this value. So my first question is: What's the purpose of the MJD setting in dark-green?
Then my main question:
I want to calculate the optimal MJD for a launch from Cape Canaveral. I don't care about the launch heading since it is given by the Surface Launch Program, but I do want to calculate the MJD so I can use it to determine the appropriate MJD for the scenario start. I am interested in both optimizing the delta-v as the flight duration if there happens to be a difference between these.
I noticed that when I launch the scenario 1 day prior, so at MJD 59063.5, two solutions (Ein < 1) can be found. The first one means that a lot of time has to be spend in orbit waiting until it is time to depart at 59064.5. The second solution is at 59064.229. So I think this is the value I am looking for.
Any help or suggestions on how this value can be calculated?
Thnx
I would like some help with IMFD's Surface Launch Program.
The trajectory I am trying to set up comes from NASA's trajectory browser. It's a 192-day trip to Mars. Departe MJD (TMI burn) is 59064.5. Arrival MJD is 59256.5.
In the left MFD, I select the Mars and set these MJD's up in the Course Target Intercept Program. The right MFD is slaved to the left (OpMode Shared ID=0) and the Surface Launch Program is openend and set to OpMode=Course.
The Surface Launch Program has a MJD value in dark-green which can be set. However, I do not see anything changing after modifying this value. So my first question is: What's the purpose of the MJD setting in dark-green?
Then my main question:
I want to calculate the optimal MJD for a launch from Cape Canaveral. I don't care about the launch heading since it is given by the Surface Launch Program, but I do want to calculate the MJD so I can use it to determine the appropriate MJD for the scenario start. I am interested in both optimizing the delta-v as the flight duration if there happens to be a difference between these.
I noticed that when I launch the scenario 1 day prior, so at MJD 59063.5, two solutions (Ein < 1) can be found. The first one means that a lot of time has to be spend in orbit waiting until it is time to depart at 59064.5. The second solution is at 59064.229. So I think this is the value I am looking for.
Any help or suggestions on how this value can be calculated?
Thnx