25 Apr 2024, 13:16 [ UTC - 5; DST ]
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 02 Jan 2020, 23:56 |
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Joined: 01/30/15 Posts: 1504 Post Likes: +641 Location: Dalton, Ga. KDNN
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Username Protected wrote: 100 Beat me to it. Hail State ! Edit: And 20 other folks ! That’ll teach me to read threads backwards
_________________ Mooney Bravo & Just Superstol
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 03 Jan 2020, 13:47 |
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Joined: 02/25/16 Posts: 287 Post Likes: +170 Location: Tupelo, MS
Aircraft: 182R
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Username Protected wrote: 100 Beat me to it. Hail State ! Edit: And 20 other folks ! That’ll teach me to read threads backwards
I just threw up in my mouth a little.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 15 Jan 2020, 15:03 |
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Joined: 03/17/08 Posts: 6073 Post Likes: +12507 Location: KMCW
Aircraft: B55 PII,F-1,L-2,OTW,
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The aft cabin window cracked while our buddy was on Christmas break down under... Apparently from differential thermal expansion or internal stresses from initial forming.
I quote, "needless to say we won't be able to pressurize until we replace the window."
_________________ Tailwinds, Doug Rozendaal MCW Be Nice, Kind, I don't care, be something, just don't be a jerk ;-)
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 16 Jan 2020, 04:29 |
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Joined: 03/15/16 Posts: 450 Post Likes: +346 Location: NC
Aircraft: Looking for one
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I bet leaving it up on styrofoam blocks put some stress on that window with that flexible fuse.
I don’t see how replacing the system he had with the same 1/8” cable in Flexiable sheath is going to get the slop out of it.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 16 Jan 2020, 11:29 |
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Joined: 07/11/14 Posts: 1195 Post Likes: +312 Location: 46U
Aircraft: C182
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Username Protected wrote: I bet leaving it up on styrofoam blocks put some stress on that window with that flexible fuse.
I don’t see how replacing the system he had with the same 1/8” cable in Flexiable sheath is going to get the slop out of it. And this (window crack) happened essentially unloaded! This was a design that was done without structural analysis. The design was done by analogy to how other canard aircraft were built — more or less by staff who knew how to build them just like they did the one before. Overall a poor design approach and a recipe for disaster. There were some point analyses done but lacking an overall design these just lead to patches which sometimes are counterproductive. The sheathed cables in this class of aircraft is just crazy. Although I usually root for the little guy, I really see no way forward with this aircraft. Best, Tom
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 16 Jan 2020, 13:46 |
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Joined: 03/15/16 Posts: 450 Post Likes: +346 Location: NC
Aircraft: Looking for one
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Username Protected wrote: I bet leaving it up on styrofoam blocks put some stress on that window with that flexible fuse.
I don’t see how replacing the system he had with the same 1/8” cable in Flexiable sheath is going to get the slop out of it. And this (window crack) happened essentially unloaded! This was a design that was done without structural analysis. The design was done by analogy to how other canard aircraft were built — more or less by staff who knew how to build them just like they did the one before. Overall a poor design approach and a recipe for disaster. There were some point analyses done but lacking an overall design these just lead to patches which sometimes are counterproductive. The sheathed cables in this class of aircraft is just crazy. Although I usually root for the little guy, I really see no way forward with this aircraft. Best, Tom
I don’t think he did any analysis after he made adjustments on the model and got it flying without the Dutch roll. They went straight to building the prototype. Design on the fly usually doesn’t work very well.
It sucks though. I don’t think anyone would be against an aircraft that would do 75% of the goals of this aircraft at that price point. I think it just shows it takes a lot of money to design something like this. No one is going to be able to put $20 million into R&D/production and price this even at $200k.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 16 Jan 2020, 16:43 |
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Joined: 04/16/13 Posts: 2144 Post Likes: +1551 Location: NW Oklahoma (6K4)
Aircraft: Bonanza G33
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I'm always for the underdog and I admire anyone that steps out in faith and hard work to beat the odds. I sure don't want to sound disparaging and would love to drink a beer with the guy. But...dude needs to start completely over on this one. If not with a completely different clean sheet design then at least with realistic expectations and projections of the current bird.
_________________ "Lucky"
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 16 Jan 2020, 20:03 |
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Joined: 05/01/14 Posts: 8804 Post Likes: +13592 Location: Операционный офис КГБ
Aircraft: TU-104
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Username Protected wrote: Y’know, I find this project a lot less interesting than whatever Mike Patey is working on at the moment. The problem is Mike Patey actually knows what he is doing which makes his projects relatively boring to watch when compared to a large trash container engulfed in flames.
_________________ Be kinder than I am. It’s a low bar. Flight suits = superior knowledge
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 16 Jan 2020, 22:29 |
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Joined: 12/28/17 Posts: 773 Post Likes: +369 Company: Bellanca Aircraft Location: Washington, OK
Aircraft: 17-30A
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sleeving the aileron cables and doing away with the pulleys is just dumb founding. I could overlook alot of what he has done and chalk it up to just trial and error. But this move is just flat going to kill someone at some point if it ever does fly. Clearly he has no concept of control systems and needs to listen to someone besides his own inner thoughts.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 17 Jan 2020, 07:36 |
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Joined: 03/05/14 Posts: 2850 Post Likes: +2870 Company: WA Aircraft Location: Fort Worth, TX (T67)
Aircraft: 1969 Bonanza E33C
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Username Protected wrote: sleeving the aileron cables and doing away with the pulleys is just dumb founding. I could overlook alot of what he has done and chalk it up to just trial and error. But this move is just flat going to kill someone at some point if it ever does fly. Clearly he has no concept of control systems and needs to listen to someone besides his own inner thoughts. He’s going to end up cutting big holes in the thing to re-work a pulley/cable control system. I think the sleeves will flex more than the original design.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 17 Jan 2020, 09:30 |
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Joined: 03/15/16 Posts: 450 Post Likes: +346 Location: NC
Aircraft: Looking for one
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Username Protected wrote: sleeving the aileron cables and doing away with the pulleys is just dumb founding. I could overlook alot of what he has done and chalk it up to just trial and error. But this move is just flat going to kill someone at some point if it ever does fly. Clearly he has no concept of control systems and needs to listen to someone besides his own inner thoughts. He’s going to end up cutting big holes in the thing to re-work a pulley/cable control system. I think the sleeves will flex more than the original design.
And more 1/4” steel brackets for anchor points.
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