21 Dec 2025, 06:21 [ UTC - 5; DST ]
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die  Posted: 26 Oct 2019, 19:47 |
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Joined: 02/20/16
Posts: 13
Post Likes: +18
Location: KFNL
Aircraft: PA-32R
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Username Protected wrote: 1.) What will the pressure be in 1 inch pipe? 8.888 PSI?
Correct...eventually 
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 26 Oct 2019, 19:56 |
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Joined: 10/06/19
Posts: 139
Post Likes: +45
Company: Water Cleaners
Aircraft: Pilatus PC-12 NG
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Username Protected wrote: 1.) What will the pressure be in 1 inch pipe? 8.888 PSI?
Bernoulli. :-) It is a bit of trick question. You can not actually calculate it unless you know at least one volumetric flow rate and the distance between the two points. And the answer is also dependent on friction and has to do with the internal pipe roughness. (turbulence generating ability of the inner wall  )
But it is great for illustrative purposes. I suspect you are very nearly correct and definitely in the ball park.
Point being most folks think the pressure goes up and by a lot. Can't wrap their head around the pressure going down. Which seque's nicely into how lift is generated across an airfoil and our discussion in general.
Most folks are really really really bad at guessing these kinds of things.
Some fewer of this group are really really really brave at making predictions/casting aspersions which have zero basis in reality, but seem to make sense.
Till they don't.
Last edited on 27 Oct 2019, 14:51, edited 1 time in total.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 26 Oct 2019, 20:12 |
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Joined: 10/06/19
Posts: 139
Post Likes: +45
Company: Water Cleaners
Aircraft: Pilatus PC-12 NG
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Username Protected wrote:
8.888 PSI?
Correct...eventually
THAT is funny as hell!! Hehe. +1
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 26 Oct 2019, 22:31 |
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The 2000km (1200mi) C-1-b record is held by a modified long ez at 254 mph (220kn)
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 26 Oct 2019, 22:45 |
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Joined: 10/06/19
Posts: 139
Post Likes: +45
Company: Water Cleaners
Aircraft: Pilatus PC-12 NG
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Username Protected wrote: The 2000km (1200mi) C-1-b record is held by a modified long ez at 254 mph (220kn) Now we are talking!!! Nice job. Working our way into the ballpark. +10
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 26 Oct 2019, 22:58 |
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Joined: 12/07/17
Posts: 6976
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Company: Malco Power Design
Location: KLVJ
Aircraft: 1976 Baron 58
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Username Protected wrote: The 2000km (1200mi) C-1-b record is held by a modified long ez at 254 mph (220kn) Now we are talking!!! Nice job. Working our way into the ballpark. +10
Are you really thinking a 3600 lb 5 seat airplane is going to have less form drag than a 2 seat tandem that was modified for the purpose of efficiency?
Color me skeptical.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 26 Oct 2019, 23:49 |
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Joined: 12/07/17
Posts: 6976
Post Likes: +5870
Company: Malco Power Design
Location: KLVJ
Aircraft: 1976 Baron 58
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Username Protected wrote: The F-22 looks much more efficient Makes you wonder what the radar profile of this thing is.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 27 Oct 2019, 04:28 |
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Joined: 11/06/10
Posts: 12197
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Company: Looking
Location: Outside Boston, or some hotel somewhere
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Username Protected wrote: Yes. The Raptor has a large cross section (more drag), looks like a larger wet area too. Raptor has larger/fatter fuselage/wing intersection (usually increases drag, there are exceptions that I do not understand). Raptor has larger winglets (more drag). Long EZ has fixed main gear (more drag). Raptor has a better/cooler looking photos. From my super limited knowledge; the cross section will almost always be the dominate factor. Tim
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 27 Oct 2019, 08:41 |
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Joined: 01/18/11
Posts: 7664
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Location: Lakeland , Ga
Aircraft: H35, T-41B, Aircoupe
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I will take a Raptor with the Walter option.
Or a 450hp allison. Match range to bladder. 4hrs and falling.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 27 Oct 2019, 08:55 |
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Joined: 11/25/11
Posts: 9015
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Location: KGNF, Grenada, MS
Aircraft: Baron, 180,195,J-3
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These imaginary picture airplanes sure are fast. Jg
_________________
Waste no time with fools. They have nothing to lose.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 27 Oct 2019, 10:43 |
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Joined: 03/15/16
Posts: 441
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Location: NC
Aircraft: Looking for one
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Username Protected wrote: These imaginary picture airplanes sure are fast. Jg I mean if we are gonna pretend, I’m going for 4000 nm at 6 gph and 400 ktas.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 27 Oct 2019, 11:41 |
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Joined: 11/25/11
Posts: 9015
Post Likes: +17228
Location: KGNF, Grenada, MS
Aircraft: Baron, 180,195,J-3
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Username Protected wrote: These imaginary picture airplanes sure are fast. Jg I mean if we are gonna pretend, I’m going for 4000 nm at 6 gph and 400 ktas.
Now you're talking.  
Jg
_________________
Waste no time with fools. They have nothing to lose.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 27 Oct 2019, 11:52 |
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Joined: 08/26/15
Posts: 10057
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Company: airlines (*CRJ,A320)
Location: Florida panhandle
Aircraft: Travel Air,T-6B,etc*
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Username Protected wrote: I mean if we are gonna pretend, I’m going for 4000 nm at 6 gph and 400 ktas. The dilithium crystals canna take the pressure!
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