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Space Shuttle - Flight

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Re: Space Shuttle - Flight

Postby Thorsten » Tue Feb 08, 2022 7:03 pm

Yes, please document the state before and what you're trying to enter as detailed as possible, save the state for testing if asked to resume, be prepared to answer what switches you moved - I can't say up-front what we're going to need, it might just be trivial or something more profound, but for starters a screenshot before/after will do fine.
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Re: Space Shuttle - Flight

Postby cgdae » Tue Feb 08, 2022 7:11 pm

TheEagle wrote in Tue Feb 08, 2022 5:49 pm:Is there any wiki page on the new builtin video recorder ? Because I don't know if I should record live or in Replay ? :?

https://wiki.flightgear.org/Video_encoding

- Jules
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Re: Space Shuttle - Flight

Postby GinGin » Sun Mar 20, 2022 11:39 am

Another TAL experience to Moron.

Overhead
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Dusty environment
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Final turn
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Pinpoint
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Some Controlled Flight Into Terrain feeling with those steep approaches
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Final wheeling
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Re: Space Shuttle - Flight

Postby eatdirt » Sun Apr 24, 2022 7:55 pm

AP work in progress to manage atmospheric bouncing, getting drag back to nominal, and the view is fantastic!

Image
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Re: Space Shuttle - Flight

Postby TheEagle » Sun Apr 24, 2022 8:24 pm

What does that "Backup C/W Alarm" annunciator mean ?
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Re: Space Shuttle - Flight

Postby eatdirt » Sun Apr 24, 2022 9:36 pm

What does that "Backup C/W Alarm" annunciator mean ?


Problems. I am playing the failure scenarios, you can get them right most side menu. You have choices from easy to hard. This one is a hard, so If I remember correctly I had an engine failure after SRB sep and I also lost one APU, together with various leaks in He engine Supply.
That's why you see all these warnings on the picture, and also why I am actually landing in Spain, it is called TAL, trans-atlantic abort landing.
These scenarios are fantastic to explore the usually unexplored. If I am not wrong, the real Space Shuttle never needed to fly these aborts. Challenger did an ATO though (Abort to Orbit), when an engine failure occurs quite late.

Anyway, a lot of fun, good stress for the new AP coding of Gingin, and very interesting!
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Re: Space Shuttle - Flight

Postby GinGin » Mon Apr 25, 2022 11:28 am

TheEagle wrote in Sun Apr 24, 2022 8:24 pm:What does that "Backup C/W Alarm" annunciator mean ?


It is an Alarm triggered by software out of limit parameters.
A kind of early Ecam thing :)
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Re: Space Shuttle - Flight

Postby GinGin » Tue May 31, 2022 4:51 pm

Another TAL abort from Vandenberg to Easter Island using a polar orbit elements mission file.
Full load, OMS kit and no Earth Rotation Velocity help for Orbital Insertion. A scenario to the limits.

Code: Select all
--prop:/mission/filename=polarexpress.xml




Early Launch over California
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View from Pilot seat
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TAL declared, PEG guidance converged, no need for manual take-over
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Entry software a few moments later
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On nominal trajectory
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Aurora
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TAEM interface.
Close in aim point, Minimal Entry Point, Short Speebrakes logic for Easter Island Emergency Landing Site
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Night atmosphere
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Overhead
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Base turn, intercepting final at 4 Nm/ 6000 feet instead of 7Nm/12000 feet (Minimal Entry Point)
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Few clouds, here and there
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Weight on wheels
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Re: Space Shuttle - Flight

Postby legoboyvdlp » Wed Jun 22, 2022 10:11 am

Quick flight -- launched in the dark at Kennedy, and reached ISS ... or where the ISS was supposed to be by approximately orbit 5!

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Re: Space Shuttle - Flight

Postby eatdirt » Sun Jun 26, 2022 9:30 pm

Yo! Congrats and welcome to the team Lego!
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Re: Space Shuttle - Flight

Postby eatdirt » Wed Jun 29, 2022 9:42 pm

Hi fellows,

And yet another failed attempt to reach the HST, ran again into some problems, lost one engine, one GPC and a leak in the Helium manifold B. These failures scenarios are really annoying, I should definitely stop using them :mrgreen:

But they allow to take nice shots, here we go with a timelapse of the TAL:

tal_vp9_1080p.webm

Hot sunset
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@Gingin. The flight Florida-Spain in 20 minutes went well, but I ran into problems into the HAC.

I have tried to follow the diamond, ignoring for a while vert and horiz indicators, and, I am sure now, the diamond has lost its vertical guidance compared to our last stable release. The horizontal guidance of the diamond seems to work but it is doing funny things, as not be up-to-date with the predictor around the circle on spec 50. Notice that I am running with real sim to maximum, and, as you can check on the time-lapse, it seems that errors build up very fast, and are quite large, even when the TACAN is captured.

More dramatically, while plunging onto the runway in CSS, I got a message "body flaps trail" and then lost the ability to roll. Switching back to AUTO, the roll was there, then back to CSS, locked horizontal as before. Then I've checked if my joystick was really sending aileron discretes in the FG joystick menu and it was. Only the CSS roll was locked, pitch was doing fine. This is really weird and no message in the console about this!

I'll try to fly again one of those with perfect guidance to check.

Cheers,
Chris.
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Re: Space Shuttle - Flight

Postby GinGin » Wed Jul 06, 2022 8:44 pm

@EatDirt: Nice timelapse

Well spotted for the HUD flight director vertical guidance.
It is still linked to the previous TAEM pitch parameter ( commanded vertical speed) vs newest TAEM pitch loop ( commanded vertical acceleration ).
I will fixed that.

The body flaps trail logic is activated at Approach/Landing interface (10000 feet for nominal entry point).

No idea for the roll, I don’t remember to have experienced that.
Was it spurious or recurrent on several tries?
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Re: Space Shuttle - Flight

Postby GinGin » Fri Sep 30, 2022 12:26 pm

TAEM test for the roll channel.

Cloudy weather in Vandenberg

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Final turn, aiming towards a minimal entry point (4 Nm in fnal / 6000 feet)
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Breaking the clouds
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X-Wind landing
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Re: Space Shuttle - Flight

Postby GinGin » Mon Oct 10, 2022 1:54 pm

Moonset
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Back to rendez vous ops, rusty
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OMS burn Lambert targeted
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Below ISS, 6000 feet
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Re: Space Shuttle - Flight

Postby GinGin » Fri Oct 14, 2022 12:47 pm

Florida TAEM with TSRA and sunset

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Lightning strike

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Severe windshear then, blackout caused by G's but AP reached the runway
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