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Old 01-24-2017, 07:53 PM   #16
Interceptor
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turtle91,when you saythe old version of pursuit mfd,do you mean the one you compiled,or the old 2010 version?
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Old 01-25-2017, 05:25 AM   #17
turtle91
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@Francisdrake
Many thanks for the new fix. This was fast...
I will try the whole mission again, but I need to fine-tune the MS2015 payload-offsets a bit more precise, before doing some screenshots...but I will do.
Btw., I forgot o mention...after PusruitMFD has done its job, I have had 1.56 tonnes of fuel left. So even if something would go wrong during final landing, I would have enough fuel to perform some manual intervention.

@Interceptor
You are right, using the acronym "old version" could cause confusion.
I used the 2010-version, which I have compiled for Orbiter2016(which checks for new surface altitude).

I am not sure, if the link points to the exact same build I am using, so have attached the exact version, which I am currently using.
Attached Files
File Type: zip PursuitMFD.zip (46.2 KB, 17 views)
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Old 01-25-2017, 06:12 AM   #18
Interceptor
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Thank you turtle91.
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Old 01-25-2017, 08:57 PM   #19
francisdrake
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Thanks for sharing this PursuitMFD version!
It works flawlessly. Finally an MFD to bring me home in Orbiter 2016

The remaining fuel is good. I had 1.6 ton left for the Brighton Beach scenario.
The idea was to have some extra fuel either for extended hovering, or for short ballistic hops, to explore new terrain.
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Old 01-29-2017, 11:39 AM   #20
pclaurent
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Thanks to both of you for providing a way to land safely on the moon onboard MAV. I used the new DLLs for Pursuit and MAV. The modified Pursuit MFD works fine and is the perfect successor of the good old LOLA. I successfuly landed on Apollo 11 landing site with MAV in LUNAR mode (just added LUNAR in the scenario, not sure if it's the good way...) with... 65 kg fuel remaining! (but my initial approach was probably not optimized).
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Old 01-29-2017, 12:58 PM   #21
turtle91
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Btw., a nice procedure to start back to moon-orbit.
-I was a bit confused wich direction I have to steer right after take-off of the ascend-module(because pilot's view is straight-up)
-so I launched with "just enough thrust" to start the ascend
-right after lift-off I used launch-MFD's autopilot to have point me to the correct heading
-then I switched the AP off and have done the rest via align-MFD and manual steering

After arriving at the target-vessel, I have had plenty of fuel left.
This procedure worked like a charm for me...

Quote:
I successfuly landed on Apollo 11 landing site with MAV in LUNAR mode (just added LUNAR in the scenario, not sure if it's the good way...) with... 65 kg fuel remaining!
I used the old(2016 compiled) dll, and had about 1.5 mT left.
Maybe the new dll tries to be "too precise" ? So you might have wasted plenty of fuel just for RCS-corrections ?

What I mean:
Use the i.e. default Atlantis to dock to ISS using PuruitMFD
-old version=fairly good approach (the Atlantis should have been allready rougly alligned with the docking port, to avoid fuel-wasting RCS-bursts)
-new version=perfect aproach, but uses RCS all the time(ultra precise), so sometimes you could run out of fuel, just because of the docking AP.
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Old 01-29-2017, 01:37 PM   #22
francisdrake
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I appreciate you have fun with the MAV!

Adding the 'LUNAR' keyword to lunar scenarios is definitely a good idea!
It reduces the fuel in the ascent stage to 2 ton. Only with the reduced payload the MDV lander has enough dV for a purely propulsive breaking, that is without an atmospheric slowdown.

For launching manually: The simply way is to pitch forward after launch. The ascent stage is oriented that when pitching forward the heading is the same as the descent stage had at touchdown. Then activate the align-orbit MFD and gradually align with the orbital target.

Watchout: When launching into a retrograde orbit (which all exploration missions have after capture), the MFD gives eratic and quickly changing readings, as the vessel is initially moving in the wrong direction following the Moons rotation. This settles down when the vessel has gained some horizontal speed in the direction of the targets orbit.
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Old 01-29-2017, 02:02 PM   #23
pclaurent
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By "new DLLs" I mean the last you just posted (not the initial zipped Pursuit file). As far as I can see they are both pretty well shaped and could be included as they are in next releases.

Regarding take-off from the moon: same for me, after Crtl-J I start the main engine and immediatly engage the AP from LaunchMFD, 4 mn before the main vessel (Orion) is over lanching base. When the apoaxis is 45 to 50 km, I cut-off the engine and the AP, and circularize 50 s before apoaxis. Aligning and Rendezvous are just a piece of cake.
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Old 05-18-2017, 03:13 AM   #24
Astro SG Wise
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I was messing around with the MAV and the new SLS 2016, and ran into this issue :



The MAV HIAD does not fit inside the fairing/diameter of the SLS B1 booster. Now, the SLS block II fairing may have more tolerance for this size, but it will still be a little too large. Boeing supports the MAV as an SLS to Mars concept, but one of the following is happening:

1) FrancisDrake's MAV size is incorrect
2) SLS size is incorrect
3) Both MAV and SLS specs. are wrong
4) Boeing has it all wrong

By the way, I love your MAV lander. Can't say that I've ever landed it successfully, but that is just from my poor piloting skill. However, just curious where you got the specs for the size of the HIAD.



Thanks!
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Old 05-18-2017, 05:52 PM   #25
francisdrake
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Thanks you like the MAV!
If you ask me, I assume the size of the SLS fairing is correct, while the MAV is not.

How I scaled the MAV (don't laugh)
I found a Boeing presentation (Raftery_5-14-14.pdf) which contains a section view of the MAV ascent stage in reference to a human figure. No dimensions are given. I assumed the human with 1.85 m and scaled the ascent stage accordingly.

Then, from other pictures, I tried to scale the descent stage to fit to the ascent stage.
Then the deployed HIAD to the descent stage. At last I collapsed the 3D-model of the HIAD, guessing, hmm, how tight can you pack it?

This sequence of guessings probably resulted in a too bloated collapsed HIAD.
If someone can point me to better documentation, I can modify the HIAD accordingly.
Or provide me with a target figure to fit inside the payload fairing, then I can try to match it.

Regarding the landings: If you just slowly reduce the thrust after HIAD jettison and keep the vessel upright (slightly leaned back to reduce forward speed) it will eventually touch down, skid over the surface and finally come to a rest.

Or use a landing MFD, e.g "baseland" which does a good job!
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Old 05-18-2017, 10:03 PM   #26
Astro SG Wise
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I'm not sure if there is much documentation outside of Rafery's PDF, so it really isn't your fault anyway. Good job with the speculation, though!
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Old 05-19-2017, 12:24 PM   #27
gattispilot
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I thought I got the MAv to fit the SLS. I can make some larger fairing for the sls if you wanted.
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Old 05-19-2017, 01:21 PM   #28
Astro SG Wise
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Well, I was using the SLS 2016 version by Longjap (derived from your meshes), found here:

http://www.orbiter-forum.com/showthr...nch+System+EM1

If you are interested in making it, I figure it would be a lot like the SLS Block II fairing. The BII fairing starts at EUS diameter, and moves outward to its widest diameter. Basically, the fairing would be pretty ugly if the MAV started at the bottom of the EUS, and it would more realistic to have some sort of spacer or smaller diameter booster that would allow the MAV to fit in the fairing higher up. According to Boeing's size, this is what it looks like with the SEP tug:



It may also be that the HIAD diameter should be a little skinnier, but if you would like to make the larger fairing, that would also be most welcome.

I also found that, when I changed the mesh for the dummy weight in the configuration file to the mesh for the MDV (MDVstowed), it was just the mesh, and when I tried deploying the vessel, Orbiter froze. Still could not find out where I was to put the other configuration files and such. Just got to play around with it a little more when I have time.

Thanks!
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Old 05-19-2017, 08:36 PM   #29
gattispilot
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Ok. IS there a scenario with the MAV and SLS.
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Old 05-20-2017, 03:41 AM   #30
Astro SG Wise
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Here's what I got:

BEGIN_DESC

END_DESC

BEGIN_ENVIRONMENT
System Sol_SLS
Date MJD 58989.8632108327
Help CurrentState_img
END_ENVIRONMENT

BEGIN_FOCUS
Ship SLS
END_FOCUS

BEGIN_CAMERA
TARGET SLS
MODE Extern
POS 11.148998 -58.041488 21.054965
TRACKMODE Ground Earth
GROUNDLOCATION -80.61953 28.62421 109.01
FOV 30.00
END_CAMERA

BEGIN_MFD Right
TYPE User
MODE Multistage2015_MFD
END_MFD

BEGIN_SHIPS
SLS:Multistage2015
STATUS Landed Earth
POS -80.6208970 28.6273640
HEADING 360.00
ALT 56.849
AROT 151.065 -8.240 4.530
ATTACHED 0:0,MS_LaunchPad_SLS
AFCMODE 7
PRPLEVEL 0:1.000000 1:1.000000 2:1.000000 3:1.000000 4:1.000000 5:1.000000 6:1.000000 7:1.000000
NAVFREQ 0 0 0 0
XPDR 0
CONFIG_FILE Config\Multistage2015\SLS_BLOCKIBMTV_day.ini
GUIDANCE_FILE Config\Multistage2015\Guidance\SLS_BlockIb_LF_GNC. txt
CONFIGURATION 0
CURRENT_BOOSTER 1
CURRENT_STAGE 1
CURRENT_INTERSTAGE 1
CURRENT_PAYLOAD 1
FAIRING 1
MET -10.000
BATTERY 5400.000000
GROWING_PARTICLES
STAGE_IGNITION_TIME 0.000000
STAGE_STATE 1
TELEMETRY_FILE Config\Multistage2015\Telemetry\SLS_EM1_Orion_GNC. txt
ALT_STEPS 100.0,350.0,1400.0,35000.0
PEG_PITCH_LIMIT 35.000
PEG_MC_INTERVAL 0.100
END
SLSTOWER2:SLS\SLSTOWER2
ARM_STATUS 0.7191 0.0000 0.0000 1.0000 0.0000 0.5705 0.0000 0.0000 0.0000 0.9815 0.0000 0.0000 0.0830 0.0000 0.0000 0.0000 0.0000 0.4759
ARM2_STATUS 0.0034 0.0000 0.1682 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
POST 1
TOUCH -74.0430
STATUS Landed Earth
POS -80.6208970 28.6274440
HEADING 180.57
ALT 73.857
AROT -118.038 -3.864 171.733
AFCMODE 7
NAVFREQ 0 0
XPDR 0
END
WATERTOWER:SLS\WATERTOWER
STATUS Landed Earth
POS -80.6195360 28.6286140
HEADING 0.00
ALT 1.997
AROT 61.695 4.479 8.251
AFCMODE 7
NAVFREQ 0 0
END
LIGHTNING1:SLS\LIGHTNINGTOWER
STATUS Landed Earth
POS -80.6199860 28.6276140
HEADING 0.00
ALT -0.194
AROT 61.308 4.535 8.220
AFCMODE 7
NAVFREQ 0 0
XPDR 0
END
LIGHTNING2:SLS\LIGHTNINGTOWER
STATUS Landed Earth
POS -80.6220760 28.6288640
HEADING 0.00
ALT -0.194
AROT 61.306 4.534 8.218
AFCMODE 7
NAVFREQ 0 0
XPDR 0
END
LIGHTNING3:SLS\LIGHTNINGTOWER
STATUS Landed Earth
POS -80.6222660 28.6266340
HEADING 0.00
ALT -0.194
AROT 61.308 4.533 8.218
AFCMODE 7
NAVFREQ 0 0
XPDR 0
END
LP39:SLS\LP39PAD
STATUS Landed Earth
POS -80.6204260 28.6270240
HEADING 0.00
ALT 1.997
AROT 61.696 4.478 8.250
AFCMODE 7
NAVFREQ 0 0
END
SPOTLIGHT1:spotlight2
STATUS Landed Earth
POS -29.1959147 2.4561787
HEADING 66.68
ALT 0.186
AROT 25.070 -22.265 75.772
ATTACHED 0:0,LP39
AFCMODE 7
NAVFREQ 0 0
SPT 0 300.0000 1.0472
PAT 2.0000 36.5000 95.2500 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
GBL 0.47846 0.60696
END
SPOTLIGHT2:spotlight2
STATUS Landed Earth
POS -29.3783550 2.4074486
HEADING 66.68
ALT 0.186
AROT 25.110 -22.449 75.730
ATTACHED 0:1,LP39
AFCMODE 7
NAVFREQ 0 0
SPT 0 300.0000 1.0472
PAT 3.2000 37.5000 -6.1000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
GBL 0.70929 0.86793
END
SPOTLIGHT3:spotlight2
STATUS Landed Earth
POS -29.8439529 2.2257810
HEADING 66.66
ALT 0.186
AROT 25.244 -22.932 75.661
ATTACHED 0:2,LP39
AFCMODE 7
NAVFREQ 0 0
SPT 0 300.0000 1.5708
PAT -111.0000 38.0000 -7.0000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
GBL 0.61562 0.15286
END
SPOTLIGHT4:spotlight2
STATUS Landed Earth
POS -30.5357169 1.9577504
HEADING 66.64
ALT 0.186
AROT 25.437 -23.652 75.557
ATTACHED 0:3,LP39
AFCMODE 7
NAVFREQ 0 0
SPT 0 300.0000 1.0472
PAT -104.0000 38.5000 95.0000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
GBL 0.60889 0.37186
END
SPOTLIGHT5:spotlight2
STATUS Landed Earth
POS -35.1000667 0.9537060
HEADING 66.58
ALT 0.186
AROT 26.650 -28.108 74.141
ATTACHED 0:4,LP39
AFCMODE 7
NAVFREQ 0 0
SPT 0 300.0000 0.3491
PAT -101.5000 23.0000 29.7000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
GBL 0.82165 0.23533
END
SPOTLIGHT6:spotlight2
STATUS Landed Earth
POS -36.6896990 0.5215900
HEADING 66.57
ALT 0.186
AROT 27.139 -29.681 73.670
ATTACHED 0:5,LP39
AFCMODE 7
NAVFREQ 0 0
SPT 0 300.0000 1.0472
PAT 2.5000 23.0000 57.0000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000
GBL 0.82956 0.68404
END
END_SHIPS


It uses config files where I changed out the mesh for the dummy weight payload to the MDV stowed (non-active) mesh.
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