28 Mar 2024, 11:26 [ UTC - 5; DST ]
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 15 Jul 2020, 15:24 |
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Joined: 08/26/15 Posts: 9514 Post Likes: +8745 Company: airlines (*CRJ,A320) Location: Florida panhandle
Aircraft: Travel Air,T-6B,etc*
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Username Protected wrote: This feels like the "anti-Raptor" build log. http://www.melmoth2.com/Garrison's column has always been my favorite in Flying.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 15 Jul 2020, 15:39 |
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Joined: 02/28/17 Posts: 1206 Post Likes: +1180 Location: Panama City, FL
Aircraft: Velocity XL-RG
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Username Protected wrote: Some of the Velocitys "stall" (mush) around 70 knots. This airplane appears to be as fast or maybe a little faster than that. Which one? On my XL the canard stalls at about 63kts. I do know a couple that didn't have the required gap between the canard and elevator that would stall at a much higher speed.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 15 Jul 2020, 16:10 |
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Joined: 08/26/15 Posts: 9514 Post Likes: +8745 Company: airlines (*CRJ,A320) Location: Florida panhandle
Aircraft: Travel Air,T-6B,etc*
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Username Protected wrote: Some of the Velocitys "stall" (mush) around 70 knots. This airplane appears to be as fast or maybe a little faster than that. Which one? On my XL the canard stalls at about 63kts. I do know a couple that didn't have the required gap between the canard and elevator that would stall at a much higher speed. I didn't mean to imply that it was an average or even typical, or that well built examples don't deliver better numbers (slower is better). I was only using 70 to make the point that "about" 70 was on the fast end of single engine canards and the Raptor is possibly faster still.
Hope that makes more sense when I put it that way.
I don't think the Raptor's numbers are dangerous per se, but I do think they require a different mindset and different pilot training.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 15 Jul 2020, 16:49 |
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Joined: 02/28/17 Posts: 1206 Post Likes: +1180 Location: Panama City, FL
Aircraft: Velocity XL-RG
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All I'm saying is that I don't know of any Velocity's that stall "around" 70kts. Some are in the upper 50's and most are in the lower 60's. Anything over 65kts would be cause for discussion... Unless you're really heavy (like the Raptor). In talking with LongEZ owners, their canards stall at even lower speeds. Now to be fair, my landing profile has me over the numbers at 70kts and with the mains on the ground not much below that. It's definitely a hot airplane to land which many people don't appreciate the first time you land.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 15 Jul 2020, 22:41 |
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Joined: 12/10/07 Posts: 30418 Post Likes: +10534 Location: Minneapolis, MN (KFCM)
Aircraft: 1970 Baron B55
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Username Protected wrote: This feels like the "anti-Raptor" build log. http://www.melmoth2.com/Garrison's column has always been my favorite in Flying. Ditto.
_________________ -lance
It's easier to fool people than to convince them that they have been fooled.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jul 2020, 12:01 |
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Joined: 09/21/13 Posts: 1972 Post Likes: +1188 Location: Wausau WI - KAUW
Aircraft: H35
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Looks like he was getting 50 knots at the 1000' markers, and 63 knots at the end of the yellow stripe by taxiway alpha, which is about 1800'. Wonder what that looks like versus the calculated numbers he did before - assuming a liftoff speed around 75, guessing that's ~2500' takeoff roll? Attachment: Screen Shot 2020-07-18 at 10.58.32 AM.png Attachment: Screen Shot 2020-07-18 at 11.00.27 AM.png
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_________________ Be nice - Jim H Be nice, be kind, I don't care, be something, just don't be a jerk ;-) - Doug R
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jul 2020, 15:55 |
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Joined: 06/17/14 Posts: 4891 Post Likes: +1861 Location: KJYO
Aircraft: C-182, GA-7
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Username Protected wrote: He's so tempted to fly it. Seems the biggest focus right now is getting the A/C dialed in. ...no amount of A/C is going to get rid of the sweat on his brow!
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jul 2020, 16:25 |
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Joined: 04/26/13 Posts: 19762 Post Likes: +19429 Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
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Username Protected wrote: what in hades is up with that gear retract and drop? I’ve never seen anything like it. The rears just flop down and that weird pulse on the retract. Those huge holes that are left open should be great on the aero. Nah. The downward "flop" is a bit brisk, but at least it's decisively down. Maybe a metering orifice would be a good idea to soften the blow, but it certainly works. The pulse on retraction is nothing unusual for a hydraulic gear system. For example the Piper Arrow: https://youtu.be/y-Z78rVN0VA. Don't make me link to a 172 RG The "holes" I attribute to the location of the outboard gear doors that have yet to be installed. At least that's what I'll give him until proven otherwise. Don't get me wrong, it's a mess in a lot of ways, but the gear operation isn't one of the ones I'd be worrying a lot about.
_________________ My last name rhymes with 'geese'.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jul 2020, 16:35 |
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Joined: 04/26/13 Posts: 19762 Post Likes: +19429 Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
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Username Protected wrote: latest video is out. It really is like watching a train wreck in slow motion So much fun. [youtube]https://youtu.be/0e-jRpFik3c[/youtube]
_________________ My last name rhymes with 'geese'.
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