Modern day "motorcycle of the air" aircraft class?

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by cluttonfred, Oct 3, 2015.

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  1. Oct 6, 2015 #101

    Starjumper7

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    I could swear he's making them bigger each time. I didn't even notice them in the original. Anyway, good choice of color on the safety thingy.
     
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  2. Oct 6, 2015 #102

    Starjumper7

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    After some adjustments.

    Pilot was lowered and reclined a lot, backrest, windscreen, and roll bar added, nose was shortened and lowered to engine height. It can still look good if the seat back and roll bar are NOT the same color as, or part of, the body, black is best. As we used to say in the sheet metal business: "Flat black paint hides a multitude of defects". Chord on Horizontal tail should be less. Excellent foot warmer.

    As Dana brought up the need for speed, I myself would not want to limit this to a low takeoff speed or limited power, I like moderate better. Those could be rules in a racing class.
     

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  3. Oct 6, 2015 #103

    Starjumper7

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    But really, you've got a P51 wing there, that swept tail is nasty for that wing, don't you think it should have P51 tail too? It could still be an H tail, and trade the camel hump for a roll bar and you've got a weener*sp (spanish accent). .
     
  4. Oct 6, 2015 #104

    Starjumper7

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    If you had something like a 150 - 180 hp engine and smaller wings, considering how light it would be, it should have good acceleration.

    Also, if you had an effective windscreen and fairing for legs/body, a helmet, and HEARING PROTECTION then how fast do you think it would be tolerable? it seems to me you could go over 150 mph, maybe 200 in a dive.
     
  5. Oct 6, 2015 #105

    Sockmonkey

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    Nope, any such things go on one of the other forums I frequent. I'm not the original artist of this pic anyhow. I've just been tweaking it in Paintshop into a functional form.
    If I was gonna "inflate" anything it would be the wing camber so we can get by with less span and a nice low landing speed.
     
  6. Oct 6, 2015 #106

    Starjumper7

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    I was just joking, I wanted to see how many would go back and check, you shouldn't have given it away :)
     
  7. Oct 6, 2015 #107

    DangerZone

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    Well, most of the tractor designs presented so far are not really that well 'streamlined' so the losses would be marginal... Bear in mind that a superbike has an 'open cockpit' yet the aerodynamics are so well thought that the drag is reduced to a minimum. Physics don't care if it is a tractor or pusher bit rather is the design is well engineered or not. Thus it all comes down to design and how you want your aircraft to look, you can neglect the losses because with an open canopy there will be plenty of them any way you position the propeller.

    Well, doesn't this design remind of the Cri Cri with a large single engine on the nose and a tail in the prop wake..? :)

    How about Cri Cri's performance as a criteria..? It is around 80kg heavy and flies at around 300km/h top speed, moderately acrobatic... :)
     
  8. Oct 6, 2015 #108

    Victor Bravo

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    But I do have the absolutely best possible advertising slogan for it, based on the fact that the pilot is wearing a Mae West... "Come on up in the sky and see me sometime" !

    What are the chances that a famous line out of an 80 year old movie would be the killer advertising slogan for a modern aerial motorcycle ?!?
     
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  9. Oct 6, 2015 #109

    DangerZone

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    Why not ask the guys to insert it into the picture and see how it fits..? :D

    9b27fc4b9b6bd3b9779b88bc8a15ed75.jpg
     
  10. Oct 6, 2015 #110

    Sockmonkey

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    It's not the overall drag I'm concerned with, it's hurting the amount of thrust we get from the prop.
     
  11. Oct 6, 2015 #111

    RPM314

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    Ouch - see the point where the tail strakes blend into the fuse? Talk about a strain concentration.
     
    Last edited: Oct 6, 2015
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  12. Oct 6, 2015 #112

    cluttonfred

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    Are we talking about the cartoon plane or the cartoon girl? ;-)
     
  13. Oct 6, 2015 #113

    cluttonfred

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    How about, "Is that a joystick in your pocket or are you just happy to see me?"
     
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  14. Oct 6, 2015 #114

    cluttonfred

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    The Butterfly Mignet-style ultrailght might be a good place to start for inspiration.

    06ulm-mag-1983-butterfly.jpg

    And the APEV (Dalby) Cubchel would be worth a look as well.

    39094d1427193013-apev-designs-daniel-dalby-cubchel.jpg
     
  15. Oct 6, 2015 #115

    bmcj

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    We seem to be straying from the motorcycle discussion....

    Oh, wait, it just occurred to me that all of the car and motorcycle shows and magazines are always adorned with scantily clad bathing suited girls... CARRY ON.

    (Maybe that's what we need to save aviation! :gig:)
     
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  16. Oct 7, 2015 #116

    Starjumper7

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    Why, yes it does. Maybe you would be able to feel the throbbing in the joystick? I had a choice between an H. tail in the prop wake or a V. tail blanketed by the pilot, and chose the prior. Having the tail in the prop wake has happened to better planes than mine ... so i don't see the problem ... other than the aforementioned throbbing.

    The cri cri has a streamlined canopy so a single Vert tail works for it. I wonder how much performance it would sacrifice if you flew a cri cri without the canopy?

    Alternately, you could stick a cri cri like canopy on my cartoon, but then would it still be a cycle of the aire? ... no
     
  17. Oct 7, 2015 #117

    Starjumper7

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    This should save it. Giselle Bundchen.
     

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  18. Oct 7, 2015 #118

    Starjumper7

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    Another thing that comes to mind is concerning the power requirement. This isn't an airliner thats going to fly 16 hrs a day all year, or even a cross country plane that needs to fly long distances at high power, so you don't need a super reliable boat anchor. Most of the time you would be flying at lower speeds due to the wind exposure, but then once in a while you can go zooming up the side of a mountain with your Hayabusa engine; cruising most of the time at around 50 hp, you can go to 160 hp for short bursts of vertical flight or for drag racing. The Hayabusa engine isn't that unreliable at all anyway if you use it moderately most of the time.
     
  19. Oct 7, 2015 #119

    rtfm

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    This is an extremely sexy design. And the girl's not bad either...

    Duncan
     
  20. Oct 7, 2015 #120

    rtfm

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    43828d1444168861-modern-day-motorcycle-air-aircraft-class-39094d1427193013-apev-designs-daniel-d.jpg


    This is a great little plane. I particularly like the larger gauge structure, which gets rid of all the fiddly pieces so common in metal planes. In fact, one might well be able to build this one out of CF tubes bonded together. That would be a great boon to someone like myself who can't weld for toffee, but can handle a tin of epoxy quite well. And wouldn't all that exposed CF look cool?

    And it's got the whole motorcycle thing going...

    I like.

    Duncan
     

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