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27 Feb 2020, 21:38 [ UTC - 5; DST ]


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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 02 Jan 2020, 20:48 
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100


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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 02 Jan 2020, 23:56 
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Username Protected wrote:
100


Beat me to it.
Hail State ! :peace:

Edit: And 20 other folks ! That’ll teach me to read threads backwards :D

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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 03 Jan 2020, 13:47 
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Username Protected wrote:
100


Beat me to it.
Hail State ! :peace:

Edit: And 20 other folks ! That’ll teach me to read threads backwards :D


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
PostPosted: 15 Jan 2020, 15:03 
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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."

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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 15 Jan 2020, 15:14 
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Username Protected wrote:


I quote, "needless to say we won't be able to pressurize until we replace the window."


:coffee: :coffee: :coffee:

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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 15 Jan 2020, 15:27 
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Aircraft: 89 A36 TN, 78 Tiger
On the ground... On it's own...
Already then...

Pressurization is not really an issue, when you get windows that crack on their own, at sea level, just because it got a little cold in the hangar... :eek: :eek:

Fly, Raptor, Fly... :rofl:

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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 16 Jan 2020, 04:29 
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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
PostPosted: 16 Jan 2020, 11:29 
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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
PostPosted: 16 Jan 2020, 13:46 
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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
PostPosted: 16 Jan 2020, 16:43 
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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.

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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 16 Jan 2020, 19:29 
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Y’know, I find this project a lot less interesting than whatever Mike Patey is working on at the moment.


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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 16 Jan 2020, 20:03 
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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.


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 Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die
PostPosted: 16 Jan 2020, 22:29 
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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
PostPosted: 17 Jan 2020, 07:36 
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Location: Fort Worth, TX (T67)
Aircraft: 1969 Bonanza E33C
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
PostPosted: 17 Jan 2020, 09:30 
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Joined: 03/15/16
Posts: 228
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Location: NC
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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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