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Team Prometheus

Posted by: Monroe - Thu Sep 19, 2013 10:42 pm
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Team Prometheus 
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Post Re: Team Prometheus   Posted on: Tue Oct 29, 2013 3:55 am
Data from the North Texas Near Space 4 mission can be found here: http://www.busadriver.com/NTNS-4%20131019/
The video: http://youtu.be/mKZ7TVaLLLM
The North Texas Near Space Team: Image


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Post Re: Team Prometheus   Posted on: Tue Oct 29, 2013 4:10 am
North Texas Near Space 4 (NTNS-4) was successfully flown on 19 October. The plane released at the planned altitude of 101k feet, very close to preflight predictions. The plane captured aerodynamically very quickly, but did not capture roll rate due to an error in the rate feedback coordinate system. This prevented early pitch capture and resulted in a maximum velocity of 493 mph in a fairly impressive dive. The idea here was to stay well below compressibility and commanded airspeeds were much lower. The plane did achieve M=0.73. Pitch was captured at about 54k feet and the airframe experienced about 6G sustained during the pullout. Some guidance issues were present and an issue in the nav_bearing command resulted in some "snaking" as the plane navigated to the first two waypoints. The issues with the command went away as the plane turned to the last waypoint. Loiter down started at 12.6k feet and was uneventful. I landed the plane manually (FPV) but set up approach too late and had to land in the field. Some damage resulted but the plane is easily repairable. I will likely post a blog on DIYDrones containing the build log as well as GNC details.
Regards,
Larry G


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Post Re: Team Prometheus   Posted on: Tue Oct 29, 2013 9:11 am
Thank you Larry!

Monroe

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Post Re: Team Prometheus   Posted on: Tue Oct 29, 2013 11:09 am
Looking good guys

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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 3:59 am
Meanwhile.... Back at the ranch
We are taking what we have learned and applying it to Project Condor!


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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 4:03 am
Preparing Project Condor for a balloon drop from 100kft. The final goal to balloon launch from the booster into space and recover with a safe landing.

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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 12:19 pm
Monroe

Just to check this, your plan is to fly a balloon to 100k then drop a small plane from the balloon, fire it and reach actual space?

Loving the work buddy!

Rob

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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 2:02 pm
Close but not exactly! I've got this 170,000cft zero pressure balloon. This Q impulse booster and the Condor. So balloon rocket then plane.

Monroe

It's small stuff lol

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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 2:16 pm
The Q Booster


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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 2:29 pm
The Zero Pressure balloon Raven industries 170,000cft


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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 2:34 pm
Mission Control


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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 2:45 pm
I can look cool throwing a peace sign


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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 2:46 pm
And by god we are going to space!
Damn the torpedoes

Monroe

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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 5:11 pm
Monroe, good stuff! Have you got a timeline for your tests?

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Post Re: Team Prometheus   Posted on: Wed Oct 30, 2013 8:23 pm
Funky paint job on the plane :-). Looking pretty impressive all this stuff, I'm looking forward to seeing the video!

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