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Author Topic: AeroKinetics Mod  (Read 143878 times)

PytonPago

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Re: AeroKinetics Mod
« Reply #105 on: March 31, 2015, 05:53:56 am »

Nice! I have a rough model of that Mobile Service Tower for KLC, just need to texture it, and animating is possible. The SLC-37 MST and Fixed Umbilical Tower are both animated.

Regards.
Uriah

Thats great !
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Acetone

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Re: AeroKinetics Mod
« Reply #106 on: April 13, 2015, 05:25:49 am »

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PytonPago

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Re: AeroKinetics Mod
« Reply #107 on: April 13, 2015, 07:11:14 am »

Nice wallpaper ! ... any plans for a calendar ?  :D
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We are still undeveloped as long as we don´t realize, that all our science is still descriptive, and than beyond that description lies a whole new world we just haven´t even started to fully understand.

Uriah

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Re: AeroKinetics Mod
« Reply #108 on: April 13, 2015, 07:39:11 am »

The primary objective currently is a fully working manned rocket/spacecraft with virtual cockpit and realistic operation from the launch pad into low earth orbit, retrograde burn for reentry, and splashdown.

Best regards,
Uriah George

Rendered images, NOT from Outerra.



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Uriah

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Re: AeroKinetics Mod
« Reply #109 on: April 29, 2015, 08:04:38 am »

Major breakthrough flight test!

Took the Delta IV Heavy Orion LVC into a 0 deg inclination equatorial pro-grade orbit around Anteworld Earth, and then performed the upper stage burn putting my eccentricity above 1.0 on a hyperbolic transfer trajectory. The simulation is still running at over 40 minutes (T+2400 seconds), and continues generating a CSV data output file with all of the Keplerian orbital elements and Cartesian coordinates for ECI position and velocity vectors for me to analyze.



eccentricity > 1.0






« Last Edit: April 29, 2015, 08:08:18 am by Uriah »
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Acetone

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Re: AeroKinetics Mod
« Reply #110 on: April 29, 2015, 08:53:20 am »

Cool!  :)

Apoapsis and Periapsis are changing, even between the last screens. I guess It means these were taken while the engine were still generating thrust, right?
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Uriah

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Re: AeroKinetics Mod
« Reply #111 on: April 29, 2015, 09:33:38 am »

Good eye Ace!

No the engine shutdown occurred after the transfer burn, so after the second screenshot. However, you are correct that Ap and Pa continue to change, and shouldn't as the orbit isn't changing. The reason for this is because a few of the current equations don't support hyperbolic trajectories exceeding e > 1.0 and therefore I must include a logic section in the flight_computer.js to switch equations once limits are exceeded. Regardless, once a spacecraft exceeds escape velocity on a transfer orbit, it is in a heliocentric orbit around the Sun, and of course OT doesn't support multi-body physics yet, so I can't calculate the semi-major axis to derive aphelion and perihelion in that case. I should actually have the string name for Ap/Pa change in the flight computer depending on the orbit, for Earth apogee/perigee, Moon apolune/perilune, etc. You'll also notice the value for Perigee is negative on a hyperbolic trajectory and this is also incorrect.

The long term plan for the flight computer is that you can not only calculate your current orbital elements, but input data for a future orbital state, or target TLE (two-line element), and calculate the required delta velocity and thrust vector for the transfer. You see that I am currently targeting the ISS, which isn't physically orbiting yet, however I can compute launch azimuth and simulate orbital rendezvous and phasing from those targeting parameters. The equations for ground track and a number of other navigation functions are coming soon.

Simulation is still running... T+7900 s and counting.



Best regards,
Uriah
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HiFlyer

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Re: AeroKinetics Mod
« Reply #112 on: April 29, 2015, 09:57:27 am »

Nice!! Looks like things are moving right along!
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Uriah

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Re: AeroKinetics Mod
« Reply #113 on: April 29, 2015, 10:30:40 am »

Thanks HiFlyer! Not much progress on the modeling front unfortunately, but scripts and FDMs are progressing in my spare time.

The simulation ended inexplicably at T+10064 seconds (2.8 hrs), possibly due to the 154 MB CSV output (@20Hz), or possibly due to the distance from Earth of 25189.4 miles, I'm not sure which.

Regards,
Uriah
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Uriah

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Re: AeroKinetics Mod
« Reply #114 on: April 29, 2015, 01:51:30 pm »

Sneak peak of the AeroKinetics GUI under development. This interface is for displaying the ground track and selecting target (e.g. ISS) for orbital rendezvous. I'm using code shared under the MiT license that takes TLE data and plots the ground track for six orbits. For the rocket/spacecraft you are launching, I calculate the TLE from Cartesian coordinate vectors, and plot the position and ground track in real time.

TLE example:

Code: [Select]
        tle = [
        'ISS (ZARYA)',           
        '1 25544U 98067A   15119.57674883  .00015278  00000-0  21995-3 0  9997',
        '2 25544  51.6470 326.8384 0005314 280.3312 119.8189 15.56237854940478'
        ];

The other GUI I am working on will be the Orbit panel, for visualizing the orbit and target orbit in 2d, similar to how Orbiter 2010 does it.

Regards,
Uriah



« Last Edit: April 30, 2015, 08:03:37 am by Uriah »
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PytonPago

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Re: AeroKinetics Mod
« Reply #115 on: April 30, 2015, 02:37:11 am »

That looks damn good !
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KW71

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Re: AeroKinetics Mod
« Reply #116 on: April 30, 2015, 09:12:39 am »

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Uriah

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Re: AeroKinetics Mod
« Reply #117 on: April 30, 2015, 09:28:36 am »

Don't stare too hard!  :o

Just to clearify, that second screenshot in my last post with the MFDs that KW's cat is staring at, is from Orbiter 2010. For those of you who don't know, Orbiter is a free space flight simulator, arguably the best out there... yet.

http://orbit.medphys.ucl.ac.uk/index.html
http://orbit.medphys.ucl.ac.uk/gallery.html
http://orbit.medphys.ucl.ac.uk/download.html

Regards,
Uriah
« Last Edit: April 30, 2015, 09:31:13 am by Uriah »
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aWac9

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Re: AeroKinetics Mod
« Reply #118 on: April 30, 2015, 03:34:06 pm »



:)
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Uriah

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Re: AeroKinetics Mod
« Reply #119 on: May 01, 2015, 07:06:15 pm »



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