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Thread: New round trip world record 111/222 Km!!!

  1. #101
    on a vacation brosius85's Avatar
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    sorry mate but to get any lift at 80'000 ft your foamie will need to be traveling many times the speed of sound...

    there is literally NO WAY you will fly it another 20'000ft higher "on the wing".

  2. #102
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    brosius85

    It will be interesting to see what speed it reaches from 80,000ft. Thats what this project is all about. To see what will happen and how to overcome the obstacles along the way. I am doing this project with a group of 5th graders with an anticipated launch date of April 2013 through May 2013. We have already got a successful NSB launch behind us. Now its on to something a little different. I am also very aware of high altitude aerodynamics. I am a pilot for Southwest Airlines here in the U.S..

    It would be really cool if we get into MACH tuck and see if the A/C comes apart. We are planning on several cameras reording the event so if will be really cool to see just what happens.

    Thanks for the input!

  3. #103
    on a vacation brosius85's Avatar
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    i'm not trying to be a party pooper, and whaterver you do the results will be awesome, it's just easy to forget that air is so thin up there you need so much speed to use it.

    good luck and happy flying.

  4. #104
    Pilot Dionysos's Avatar
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    Quote Originally Posted by brosius85 View Post
    sorry mate but to get any lift at 80'000 ft your foamie will need to be traveling many times the speed of sound...

    there is literally NO WAY you will fly it another 20'000ft higher "on the wing".
    what's the speed of sound?

    Dio
    Latest Crafts: The Anti-Gravity-Machine, Carbonator, Guava 2m, Wunderwaffe I, Wunderwaffe II, Uberwaffe, Plankton v2, TBS discovery

  5. #105
    Test pilot addict airtruksrus's Avatar
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    Quote Originally Posted by Dionysos View Post
    what's the speed of sound?

    Dio
    Varies greatly with altitude. With rocket propulsion it is possible to get it up over the 80K ft level quite easily, stick with the baloon for the foamie. Looks like anything released from that altitude is in spin mode for a while, hope the foam holds together.
    KF7TSE

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  6. #106
    on a vacation brosius85's Avatar
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    don't worry air, dio is just poking fun haha

    waht i meant was speed of sound at sea level, not at 80000 :P

    YOU GET THE POINT. lol

  7. #107
    Test pilot addict airtruksrus's Avatar
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    Quote Originally Posted by brosius85 View Post
    don't worry air, dio is just poking fun haha

    waht i meant was speed of sound at sea level, not at 80000 :P

    YOU GET THE POINT. lol
    Kinda figured the topic was getting way off track, just thought it was cool watching an F4 phantom breaking mach at the Pt Magu airshow back in the late '80s, the water vapor was screaming to get out of the way.
    KF7TSE

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    Airtruksrus Cockpit Ground Station Systems.
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  8. #108
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    Roberto- That was quite impressive. Congrats. Just wondering how you were checking for full-scale aircraft? Sorry if it's been mentioned already.

  9. #109
    Pilot sircana's Avatar
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    He's full size pilot. Let's say he knows a little bit about air traffic...;-)

  10. #110
    Look Up! Chip's Avatar
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    Amazing.
    ~~~~~~~~~~~~~~~~~~~~~

    Chip.

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