The Jet Look

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by Starjumper7, Nov 1, 2015.

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  1. Nov 1, 2015 #1

    Starjumper7

    Starjumper7

    Starjumper7

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    There's been some discussion around this subject recently but no thread directly applies to it. I was inspired by the Archon as the best solution to achieving the jet look. My goal here was to make it look more refined, more like a jet, and more efficient.

    There will be losses due to the fake ducts, but that is a GIVEN for this type, and so what I did here was to minimize it lengthwise.

    There are actually two versions in the drawings here, the back view shows the back half of the plane, from the propeller back. The back view shows what it would look like from the rear with two fake ring ducts placed behind the propeller.

    The top and side view show the same thing but with the duct ending in front of the propeller and a more rearset prop. The one with the fake ducts behind the prop may not suffer so badly from it because the duct surfaces contribute to the horizontal and vertical tail volume and so allow some reduction in the standard surfaces. I visualize the horizontal being a flying tail.

    I prefer the looks of the one where the duct ends in front of the prop because it looks more real. The 'exhaust rings' would just be painted on, or could be plates of aluminum, for realistic effect.

    This type of thing really needs to be a two seater, doesn't it? Now the challenge is to draw something like this in scketchup. The wings are styled after the F-22, but could be made like the F-18 types. It looks like the horizontal tail should be more forward.

    I call this the Foxjet (faux jet) enjoy.
     

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  2. Nov 1, 2015 #2

    WonderousMountain

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    I'd much rather see a mean looking scimitar fan behind a V-12 ;)
     
  3. Nov 1, 2015 #3

    Doggzilla

    Doggzilla

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    Was just thinking about a scimitar. How about twin counter rotating? :shock:
     
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  4. Nov 1, 2015 #4

    Starjumper7

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    A scimitar fan, do you have a picture?

    Something like this? I made this one:

    36907d1418691088-prop-fans-homebuilts-superfan.jpg

    36908d1408540034-prop-fans-homebuilts-fan.dia-power.jpg
     

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  5. Nov 1, 2015 #5

    WonderousMountain

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    download.jpg

    Haven't tried my hand at props in a long time, I think I'll just do what Jan says when it comes time...

    LuPi

    This ones a little too big, but I like the narrow chord look
     
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  6. Nov 1, 2015 #6

    Starjumper7

    Starjumper7

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    On that plane style I sketched it will be a lot nicer to make the 'jet pods' smaller.
     
  7. Nov 1, 2015 #7

    Starjumper7

    Starjumper7

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    I LIKE propellers, it must be because I was a sword maker in past lives, not to mention sword wielder.

    I used to do precision layout and checking in a metal shop making military aviation hardware so I layed out all the hole locations on that prop by hand.
     
  8. Nov 2, 2015 #8

    WonderousMountain

    WonderousMountain

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    It's really quite something, when the blades are normal to the flow, the foils selected for local Cl, AoA and in the drag bucket at maneuvering speed.

    That was back in the pencil and paper days, Wonder if I could do one now???

    LuPi
     
  9. Nov 2, 2015 #9

    Sockmonkey

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    One way to integrate the jet look into a prop plane would be to have the fake jet intake/exhaust parts be the cooling ducts like the Mustang had. That way they can contribute to speed rather than drag. Then paint the plane a striking color and make the prop a dull blue-grey and people won't even notice that it's not a jet.
     
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  10. Nov 2, 2015 #10

    gtae07

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    Skip the fake intakes and jetpipes, unless you're going to throw ducted fans in them.

    I'd think any sufficiently pointy pusher should do the trick, like the CCO2 or the Viggenite.
     
  11. Nov 2, 2015 #11

    Starjumper7

    Starjumper7

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    Something like this? This is an old drawing from the F-15 thread.

    4954d1258844050-raptor-f-15-replica-raptor.jpg
     
  12. Nov 2, 2015 #12

    Tiger Tim

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    Props are self-hiding as they turn so perhaps all of these clever ruses to put the propeller in weird, less visible places aren't necessary. Just do some thing like this but smaller:
    [​IMG]
    Oh, and get a really good noise cancelling headset.
     
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  13. Nov 2, 2015 #13

    Starjumper7

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    You could make one but I wouldn't recommend it, because the blades will crack at the outermost rivet holes and go flying off at nearly supersonic speed.
     
  14. Nov 2, 2015 #14

    Toobuilder

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    I have an airplane in mind that is intended to use a pusher V-8 engine, but the "jet look" is limited to the pilot and back seater being way out in front of the wing leading edge so that we can see the world slide by unencumbered. If you're at 10,000 feet and 250 knots looking out over a pointy nose, what value do "fake" inlets add? If you can't see the airplane behind you and it performs well, who cares what it looks like to bystanders?
     
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  15. Nov 2, 2015 #15

    VAPORTRAIL

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    Been working on this design a while now (too long!) Need to cut or glue or weld something soon.

    Still light years behind Malish, but getting closer to final design. Trying to stay under 2,000 pound gross.

    Basically a simple twin boom pusher with a couple 100-120HP engines feeding 36" ducted fans.

    Last pic is without ducts for clarity. As they say, Stay tuned...
     

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  16. Nov 2, 2015 #16

    cluttonfred

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    Starjumper7, going back to your first post in this thread, it would be neat to see your concept without any of the false ductwork, just a twin-boom pusher with the twin rudders and split horizontal stab, maybe with the booms along the bottom of the wing and a straightforward, single-tapered wing. I suspect that would look sexy enough not to need any ductwork.

    PS--It would also be neat to see the same design with separate (not joined) inverted V tails, which might be simpler aerodynamically and structurally.
     
    Last edited: Nov 2, 2015
  17. Nov 2, 2015 #17

    autoreply

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    Both the Piaggio Avanti and the Learfan easily have looks that are on par with a jet ;-)
     
  18. Nov 2, 2015 #18

    Doggzilla

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    When I first went to flight school, the first thing I saw was a Piaggio taking off. Never saw one again.

    Both of them are so close to being perfect, but just slightly "off". Just minor touches would make them absolutely breathtaking aircraft.

    But here is the impressive thing. The Avanti is significantly faster than an FW-190 on the same power. 1600 horses.

    Now if that doesn't say something about a proper pusher, then what does?
     
  19. Nov 2, 2015 #19

    cluttonfred

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    Hmmm, it may also say something about 40+ years of evolution in aerodynamics and lighter engines and structure. I'm just sayin'.... ;-)
     
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  20. Nov 2, 2015 #20
    If you're anywhere within a mile of it. :gig:
     
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