Raptor Aircraft

Discussion in 'Flight Following' started by Unit74, Nov 6, 2015.

  1. Velocity173

    Velocity173 Touchdown! Greaser! PoA Supporter

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    Yep.

    https://www.kitplanes.com/velocity-u/
     
  2. Tantalum

    Tantalum Final Approach

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    ^do you guys think Peter knows this?
     
  3. midwestpa24

    midwestpa24 Pattern Altitude

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    Good to know, and makes sense to a pilot that has never had the pleasure of flying a canard...yet. I can see if the canard stalls, and my understanding is it should before the wing by design, the nose is going to drop fast and ugly.
     
  4. Salty

    Salty Final Approach PoA Supporter

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    I only have one flight in a canard, but the nose didn't drop that fast when the canard stalled. Faster than you'd want a few feet off the ground, but not that fast IMO and certainly not ugly, it's very smooth.
     
  5. Spring Ford

    Spring Ford Pre-takeoff checklist

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    No **** Sherlock.

    20mm = 0.79 inches

    It is quite likely that the weight of the projectiles follow a cube law, so -
    0.30 cubed is 0.027
    0.79 cubed is 0.488

    So a solid mass would be about 20 times heavier.

    However it is a LOT worse than that, the 20mm cannon has room for an explosive charge.

    I have no idea how to estimate the difference that might make however I certainly would not like to be on the wrong end of it.

    :)
     
  6. donjohnston

    donjohnston Cleared for Takeoff

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    Depends on the plane and weight. And it's hard to appreciate at 1,000' AGL. When the nose comes down, the plane accelerates... down.

    In my plane with just me in the front seat, I don't get a pitch buck at all. Just a 400fpm level descent. Put another person in the front seat full fuel and the nose drops noticeably. Add some baggage and while it's not a violent drop, there's some mass and inertia behind it. If that happens 3 or 4' above the runway, I'd give even money on collapsing the nose gear.

    But that's my plane. A four place plane with an empty weight under 2,000lbs. Probably not nearly the same outcome as a Long-EZ. But much worse in this pig of plane that's empty at what: 3,200lbs?
     
  7. Velocity173

    Velocity173 Touchdown! Greaser! PoA Supporter

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    Worst landing I’ve ever done was in my Velocity. Very gusty day with another guy up front. Just lost all lift at 3-4 ft above the runway. Like an F-18 slamming aboard a carrier. Hit so hard it popped the nose tire. No issues with prop clearance though.
     
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  8. 3393RP

    3393RP En-Route

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    I cringe every time I see German gun camera film of a B-17 taking 20mm cannon fire. There are pieces of the aircraft flying off, and there's no doubt the tail gunner is dead. Ugly stuff.
     
  9. Velocity173

    Velocity173 Touchdown! Greaser! PoA Supporter

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    Off topic but just watched The Cold Blue today. Excellent documentary.
     
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  10. jaxcessnadriver

    jaxcessnadriver Pre-Flight

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    Looks like there are some issues.... throttle communication to the ECU seems to be cutting out and the elevator trim moving to a nose down setting as airspeed increases.

    https://youtu.be/UZmrJsDRoE8
     
  11. Racerx

    Racerx Pre-takeoff checklist

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  12. jimhorner

    jimhorner Line Up and Wait

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    My Bellanca Super Viking does. Three small static ports just behind the raised ring area. Plus another port at the rear of the assembly.

    [​IMG]
     
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  13. Sierra_Hotel

    Sierra_Hotel Pre-takeoff checklist

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  14. 3393RP

    3393RP En-Route

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    After watching the latest video, I'm guessing by Sunday the aircraft will be in the weeds. His hand was shaking as he reached up to flip overhead switches.

    After misplacing a data entry decimal point on the throttle range when the aircraft was reassembled, the engine went to idle during one of PM's runs.

    Then he discovered the canard elevator is flattening out and losing positive pitch as the airspeed increases. Solution: Crank in more positive trim. No need to change the trim spring. This means as the canard AOA changes at liftoff, the elevator pitch will also change. How much? Who knows?
     
    Last edited: Aug 27, 2020
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  15. Sierra_Hotel

    Sierra_Hotel Pre-takeoff checklist

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    Thought he had a new local test pilot? Well, at least he has a flight suit now....
     
  16. WDD

    WDD Line Up and Wait

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    Reminds me of "The Defender". I thought it was a spoof along the lines of "This is Spinal Tap", but I'm not sure - this guy might be serious. The result is the same though - it will never fly, just like the Raptor.
     
  17. donjohnston

    donjohnston Cleared for Takeoff

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    This is a well known... feature with canard elevators. The low pressure on top of the canard sucks up the elevator the faster you go. Velocity's have a "sparrow strainer" (a small upside down wing) on the trailing edge of the elevator to counteract this and relieve the force on the trim spring. Some builders never install them of remove them. If your trim spring is strong enough, it's no problem. But if the trim spring breaks (or breaks loose), you could wear your arm out by the time you get back on the ground.
    SS-3.jpg
     
  18. Bender Aviation

    Bender Aviation Pre-takeoff checklist

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    Oh ffs. It just keeps getting worse. His family will miss him. So very selfish...
     
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  19. iamtheari

    iamtheari Administrator Management Council Member

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    Movie theaters are charging almost $20 for an adult ticket. Buy one for your date, a large popcorn, a couple boxes of candy, and a couple large sodas and you're in it for $100. At the end, you'll probably walk out disappointed because most movies just aren't that good. Plus, in 2020, you'll come home with the rona.

    The guys kicking in $1,000 confuse me a little, but I can't say anything bad about a person who decides that he is more entertained spending $20 to ensure another Raptor prototype video than on Star Wars 10: The Tears of a Generation.
     
  20. Dave Theisen

    Dave Theisen En-Route

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    Seems more like spending money on snuff films than Star Wars.
     
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  21. Tantalum

    Tantalum Final Approach

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    'The Tears of a Generation' lol.. sad but true. Disney is awful. Kathleen Kennedy is on her way out. Rumor is Mandalorian's Favreau will take a bigger role in Lucasfilm
     
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  22. NordicDave

    NordicDave Pattern Altitude PoA Supporter

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    I can see someone donating $20. That's little more than a movie ticket before Covid. Heck, everyone here has had 22 pages and 862 posts worth of entertainment.

    $20 just keeps the show going.
    :rollercoaster:
     
  23. NealRomeoGolf

    NealRomeoGolf Pattern Altitude

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    I'm telling you.....put Christopher Nolan on the next 3 Star Wars films. They will be epic. But nobody listens to me....
     
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  24. Tantalum

    Tantalum Final Approach

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  25. unsafervguy

    unsafervguy Pattern Altitude

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    so lets see, the throttle is working fine for a bunch of runs, then fails to idle and the solution is just re-calibrate it? the engineer in me says, "interesting, why did it loose calibration? a fly by wire throttle system has to be foolproof, even better, foolproof with with a backup. the sad part is with decision making like that the go fund me page may be a go fund me to pay for his funeral expenses.
     
  26. Bender Aviation

    Bender Aviation Pre-takeoff checklist

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    I wonder if Jerry would be willing to test pilot for Raptor.
     
  27. jrcox19

    jrcox19 Pre-takeoff checklist

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    Don't worry guys, he slapped some tape near the static port. Should be all good now -- Oh wait, it didn't accomplish anything. Damn, guess he'll try again later.
     
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  28. Racerx

    Racerx Pre-takeoff checklist

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    I was like 13 when I saw Spinal tap. I truly thought it was a real band. The line of "don't touch it...it can't be played" kind of reminds me of this err...plane?
     
  29. jaxcessnadriver

    jaxcessnadriver Pre-Flight

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    Wasabi indicated his pitot has a built in static port. I just don’t get why he doesn’t hook into that.... seems like the dicking around with the port he’s got is wasting more time.
     
  30. kyleb

    kyleb Final Approach

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    Peter has a lot of bigger issues to solve.

    Static position and/or configuration can be determined by trial and error. It is a bit of a black art. No ASI is accurate through the entire speed range, but as long as it is consistent at a given point, you can use it as a reference, because that's what you need it for anyway.
     
    Last edited: Aug 27, 2020
  31. Omalley1537

    Omalley1537 Line Up and Wait

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    The addition of a flight suit concerns me that he is going to try to fly the thing himself. The incredible self-righteousness he has displayed makes me fear that once he’s run out of possible test pilots, he’ll decide that he needs to do it, rather than stopping to ask himself why he ran out...
     
  32. Bender Aviation

    Bender Aviation Pre-takeoff checklist

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    Yup. We all know he's going to. He's just talking himself into doing it. Every video I post a comment urging him to reconsider. Here's what some of his cult followers posted in response: I hope they feel responsible for his demise when he ends up crashing.

    Truly inane stuff.

    Because the wright brothers were taking off in a 3000 lb machine at 100kts right?
     
    Last edited: Aug 27, 2020
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  33. Lindberg

    Lindberg En-Route

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    One would be amazing, one would be garbage, and one would be unintelligible but have a cult following.
     
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  34. denverpilot

    denverpilot Tied Down PoA Supporter

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    And it goes to eleven! LOL
     
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  35. Datadriver

    Datadriver Line Up and Wait

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    He thinks he can "slowly" open the envelope himself. 8000 feet of runway disappears fast at 100kts when you are in ground effect or not.
     
  36. Bender Aviation

    Bender Aviation Pre-takeoff checklist

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    Peter doesn't need an accurate altimeter or ASI, only a dumb liberal commenter on Youtube would want that. You think the wright brothers had that? All he's gonna do is fly it into ground effect. It will literally go perfectly, nothing can go wrong. Then he'll fly a loop around the pattern all by himself, because who needs experienced test pilots. That's for *******.
     
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  37. Omalley1537

    Omalley1537 Line Up and Wait

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  38. bnt83

    bnt83 Final Approach PoA Supporter

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    Just remember folks, you ain't cool without walking away from the explosion.



    I hope it all goes well for him. I would never want to see someone spend that much of their life on something and not succeed. Didn't someone build a twin Vans RV and crash it on the maiden flight?
     
    Last edited: Aug 28, 2020
  39. WWFeldman

    WWFeldman Filing Flight Plan

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    He's going to taxi that plane to death. At least I hope he does, so he can't try to fly it.
     
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  40. midwestpa24

    midwestpa24 Pattern Altitude

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    On the bright side, the NTSB will have plenty of data points for their investigation with all the cameras he's using.
     
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