Recent content by donjohnston

HomeBuiltAirplanes.com

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  1. D

    10/23 Raptor Video

    Not one of those... points has any relevance on your commenting about another users post being the "most ridiculous of 2021". What is your engineering background in composites?
  2. D

    10/23 Raptor Video

    I really don't think there's any problem with the wing. Not draining the oil to look for chunks of metal is almost a crime.
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    10/23 Raptor Video

    "New engine is going to cost about $5,000." Doesn't sound like an IO-550 to me.
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    10/23 Raptor Video

    Calibrated it? :rolleyes: Although I suppose it's possible that the Garmin has a means of adjusting the static pressure. Then again, you wouldn't be able to do that until you've flown and have a baseline.
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    10/23 Raptor Video

    I was wondering about the Jet-A vs. diesel so I posted a question. IIRC, the consensus was that while a street diesel would run on Jet-A, it wouldn't be good long term. Diesel has lubricants in it that Jet-A doesn't. So if you want to run Jet-A in an engine that wasn't built for it, you would...
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    10/23 Raptor Video

    There's quite a few airports with auto fuel. I don't think that I've ever seen a diesel pump at an airport though.
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    10/23 Raptor Video

    So that's the issue?!?! 50 year old engine technology. Well I'll be. Here I thought it had more to do with crazy expensive airplanes with crazy expensive parts due to low volume and high liability. Out of curiosity, what university do you teach economics at?
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    10/23 Raptor Video

    Neither did I. I said "relatively" flat. As in: compared to traditional aircraft. One guy (pilot) I took up in my Velocity had never been up in a canard type aircraft before. On landing while he didn't say anything, he seemed... uncomfortable. After landing I asked what was up and he...
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    10/23 Raptor Video

    I only have experience in Velocity's, but I assume LongEZ's, Cozy's, etc. all land the same way. Relatively flat. I'm on the ground at least 5kts over the canard stall speed. Try to cut it too close and you could have the canard stall while you're still 5' off the ground. That's a bad place...
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    10/23 Raptor Video

    No, I was not testing a new design. Not sure what prop clearance has to do with stall testing. I can't see how another 5,000' of altitude will make any difference in testing when the canard stalls. If, for some reason, it gets into a deep stall, you'll just have longer to think about it.
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    10/23 Raptor Video

    8,000' to do stall tests??? I did mine at 3,000'... On the first flight (So I would know what speed to land at).
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    10/23 Raptor Video

    I'm confused why he's talking about flaps on the main wing when he still has absolutely no idea what speed the canard stalls at. For all he knows, he could be landing at 60kts. I know that's extremely unlikely but my point is that it's a huge unknown.
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    10/23 Raptor Video

    I don't know if my OL was different than others or E/R&D, but they did have this in paragraph 14: ================== The following aircraft operating data has been demonstrated during the flight testing: speeds Vso , Vx , and Vy , and the weight , and CG location ___ at which they were...
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    10/23 Raptor Video

    Yep. Testing the autopilot having not read the manual so he didn't know what "Trim Up" meant. Testing the autopilot before doing the first stall test to know where the canard is going to stall. And the static port error still hasn't been addressed.
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