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Space Shuttle - Flight

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Re: Space Shuttle - Flight

Postby GinGin » Mon Jun 15, 2020 7:34 am

Thanks .
The nice thing is that I was just testing another TAEM in white sands , and I observed that nice sunset without tweaking anything else than some alto cirrus and no smog, quite nice sighting
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Re: Space Shuttle - Flight

Postby GinGin » Sat Jul 18, 2020 9:41 pm

Nice desk

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Re: Space Shuttle - Flight

Postby GinGin » Fri Aug 07, 2020 10:23 am

Lift off over the desert

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Chasing the Sun

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Before running through failures :)

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Re: Space Shuttle - Flight

Postby legoboyvdlp » Fri Aug 07, 2020 11:48 am

That is one broken space shuttle :D
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Re: Space Shuttle - Flight

Postby GinGin » Fri Aug 07, 2020 5:59 pm

legoboyvdlp wrote in Fri Aug 07, 2020 11:48 am:That is one broken space shuttle :D



That might come from the current heatwave :mrgreen:
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Re: Space Shuttle - Flight

Postby GinGin » Tue Aug 11, 2020 7:25 pm

Fictive scenario from Edwards with RTLS to test failures

Let's rock

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Multiple failures that lead to an RTLS
First Helium leak non isolable in left engine, hence left engine shutdown.
Then failure in the Pneumatics Helium system ( that controls some pneumatically actuated valves to bring propellants to the SSME
Forward RCS jet failure, and left and right OMS low pressure in the tank ( associated with the dump we made)

Pretty cool when all come together to lead to coherent scenario with correct typo :)

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Light from the left ( outbound leg)

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And from the right ( back to Edwards)

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Let's glide

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Some other failures showed up during TAEM
Some dilemma with Probes and Tacan, State Vector will start to slowly diverge

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Inverted Chuck Yeager :)


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Re: Space Shuttle - Flight

Postby GinGin » Wed Sep 02, 2020 9:23 pm

Sum up of last flights

Moon sighting before Launch

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Misty day

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Moon Rising

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Cirrus Ocean

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Srb Sep....

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And let's go for the sim session :)

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Re: Space Shuttle - Flight

Postby Gomendio » Sun Sep 06, 2020 1:01 pm

Hi to all

Been following all the posts and all the improvements since the last 8 months and I've been watching in awe all the "enhancements" to our beloved Shuttle. The new fonts for the screens, the new off nominal scenarios and
so on so forth. My hat off GinGin, seriously. The passion is definitely there.

Your pics are stunning. Which FG version and Earthview RES tiles are you currently using, 16K or 8K? After the "decaffeinated covid summer session" i'm going to be more relax and grounded for sure, and what a better time to retake
the SSIM and off nominal scenarios long putted aside.

A quick one. I've been following as well your tutorials on the orbiter forum, with the SSU, using the FDO MFD and a real rendezvous plan using a past STS mission. For the Lambert PEG-7 finite burns you actually used the FDO mfd, for the Nc NNC and NC1 NC2 NC3 4 and TI burns for a nice and proper REM manvr and Z-bar docking..

Any chance to spend some time in explaining how to use the LEO targeting tool to reach NCC NC 1-4 and Ti burn?

I'm sheer useless mate in using LEO for peg-7 and peg-4.

thx so much inadvance.
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Re: Space Shuttle - Flight

Postby GinGin » Tue Sep 08, 2020 3:42 pm

Gomendio wrote in Sun Sep 06, 2020 1:01 pm:Hi to all

Been following all the posts and all the improvements since the last 8 months and I've been watching in awe all the "enhancements" to our beloved Shuttle. The new fonts for the screens, the new off nominal scenarios and
so on so forth. My hat off GinGin, seriously. The passion is definitely there.



Thanks, Indeed passion still there :)



Your pics are stunning. Which FG version and Earthview RES tiles are you currently using, 16K or 8K?


16K, the last ones from the enhancements made by the two Chris :)
I am just playing luch more with the earthview in sim options ( visibility, clouds, overlay etc)
It was discussed on that topic https://forum.flightgear.org/viewtopic.php?f=87&t=15754





I'm sheer useless mate in using LEO for peg-7 and peg-4.


PEG 4 is only available and usefull for Orbit Insertion (OPS1) and Deorbit (OPS3)
The page here is quite helpful for the handling of the soft
http://www.science-and-fiction.org/science/leo_05.html

It is better to use the external soft, allowing much more iterations ( only 30 in the sim to avoid overstressing the cpu)
But if you have a good computer, I can show which line to modify to allow more in sim iterations, and avoid exporting the state vector into a config file.

For example, if you take the last dev version with iss scenario ( 2 mn before countdown for ISS window), you end up in Orbit with a very close to real parameters.
You can use those parameters for PEG 4 and a good insertion.

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I played just with The Ht ( height ) paramter to have a higher targeted apsis
You see that the PEG 4solution converges and give some PEG 7 parameters, ready to be fired at next apogee.
you can try those kind of parameters for OPS 1insertion, though a good PEG prograde burn ( DVx) at the Apogee is as good.

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Which gives a good insertion, ready for Rendez Vous phasing and a small out of plane burn to reduce Relative Inclination ( which will vary anyway with nodal precession)

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For OPS3, same problem.
Better to be on an almost circular Orbit, deorbit burn forecasted 45 mn before Landing Site, and standard OPS 3 deorbit parameters for a 150 Nm circular Orbit

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If you use those paramters for the scenario in the launcher, you should be good for a PEG 4 OPS 3 try
(Scenario that goes with the tutorial http://wiki.flightgear.org/Flying_the_Shuttle_-_Deorbit_Preparation_Advanced)

Code: Select all
#Deorbit for KSC// one Orbit before
--aircraft=SpaceShuttle-mission
--lat=28.0
--lon=-60.0 
--heading=138.0
 


We got some pretty decent solution
Though it is far better to do it with the LEO tool, much more accurate for reentry range and Perigee at Entry Interface ( two examples below)

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Any chance to spend some time in explaining how to use the LEO targeting tool to reach NCC NC 1-4 and Ti burn?



A bit more complicated as we cant really extract the target state vector to put into the LEO tool.
I need to get back in it to give a proper advice on it.
I guess you have been through those guides ?
http://www.science-and-fiction.org/science/leo_12.html


I did it manually by hand, like an an aircraft flight plan.
The aime is to arrive 300kfeet behind the target , on an almost circular and matching Orbit, before firing the Lambert solver for NCC , and Ti burn.

It is what I did in those scenarios
https://www.orbiter-forum.com/threads/sts-88-new-era-of-space-exploration-mission-sum-up.36739/

https://forum.flightgear.org/viewtopic.php?f=87&t=36311

There are some good books for rendez vous philosophy.

Those kind of graphics, combined to the rendez vous canvas in game are very helpfull to forecast and adjust the catching rate by modulating the perigee ( Apogee is always close to the target one, easier for the pahsing)

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I have sent you some documents in PM


Hope it helped.
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Re: Space Shuttle - Flight

Postby GinGin » Fri Sep 25, 2020 4:55 pm

Night session

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Sleepy cockpit

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Wake up time

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Re: Space Shuttle - Flight

Postby GinGin » Thu Oct 15, 2020 10:17 pm

Back into Orbit.

Night OMS ops with out of limit values for test purpose

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Above Recife

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White Sands TAEM with Sunset

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HAC

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Real Sim vs FG Sim

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Re: Space Shuttle - Flight

Postby Fritz » Thu Oct 15, 2020 10:50 pm

This is amazing! Only the sheets of paper look a bit too tidy... :wink:
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Re: Space Shuttle - Flight

Postby GinGin » Fri Oct 16, 2020 7:43 am

Fritz wrote in Thu Oct 15, 2020 10:50 pm:This is amazing! Only the sheets of paper look a bit too tidy... :wink:


Yes, Ipad thin layer version :mrgreen:
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Re: Space Shuttle - Flight

Postby Johan G » Fri Oct 16, 2020 2:22 pm

Fritz wrote in Thu Oct 15, 2020 10:50 pm:Only the sheets of paper look a bit too tidy... :wink:

That can be fixed, see: IanHubert, CG Realism with Warbles in Blender - Lazy Tutorials (1 min, published April 9, 2020)
Low-level flying — It's all fun and games till someone looses an engine. (Paraphrased from a YouTube video)
Improving the Dassault Mirage F1 (Wiki, Forum, GitLab. Work in slow progress)
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Re: Space Shuttle - Flight

Postby Fritz » Fri Oct 16, 2020 5:15 pm

Wow! Too bad Blender and me aren't made to coexist in the same universe. The only thing I've managed to do is importing an ac3d file and exporting it as a 3ds file so I can import it into Sketchup...
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