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#31
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![]() Quote:
That alone increases your power demands as your drag goes up. You also need to have enough power to maintain airspeed so you can have rudder authority (Vmc) if you need to climb... as to how much airspeed this, I dont know. Also you need to calculate all this based on the critical engine being the one that failed... as we all know Murphy's law dictates that it will be the one that fails on you... especially if you forgot to include it in your calculations ![]()
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~Nathan |
#32
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![]() thank you. will read and digest. I started a wiki page on this if anyone wants to contribute ;
http://canardaviationwiki.dmt.net/wi...win_Cozy_MK-IV cheers, S |
#33
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![]() Quote:
__________________
Drew --- SN 1200 Celebrating four years of NOT building. You are buildin a dam airplane from scratch and you do not know what you are doin!!!! - Dust ![]() -Inspired by Burt, designed by Nat, built by me. (Hopefully) www.Cozy1200.com - just pics and misc ramblings |
#34
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![]() I noticed the twin Velocity model was on display again this year at OSH. I didn’t catch the guys name but someone at their booth said they are working on finishing it before the end of the year.
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#35
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![]() hmmm, engines are on the wings.. any comment on wings vs pods (alekto stylin) ?
S |
#36
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~Nathan |
#37
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![]() Jon, what Steve meant was the HPA TT62 Alekto aircraft with V-twin pods/nacelles on its tail, just for the props. The engines were in the tail section of the fuselage. The design fell short of expectations, and the new TT62 Baltic design is configured like almost any other twin, with engines in the wings, kind of like a bigger Diamond Twin Star.
Kumaros It's all Greek to me |
#38
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![]() OT on
Quote:
OT off
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-- future insane homebuilder -- |
#39
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![]() Quote:
http://www.dw-world.de/image/0,,1196412_4,00.jpg Quote:
I wonder about two direct-drive aircooled engines in nacelles out there, instead of those geared units. hmm, it seems there is a CSU propellor manufacturer here in NZ IvoProp style. Amazing. A money-back guarantee too. http://www.airmasterpropellers.com/w...idWebPage=3474 S Last edited by SteveWrightNZ : 08-12-2006 at 05:20 AM. Reason: changed link |
#40
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![]() Steve, I can mainly point you to this Wikipedia article (in German):
http://de.wikipedia.org/wiki/HPA_TT62 And these articles in Engish: http://www.flightglobal.com/Articles...July+2006.html http://www.aviationnow.com/shownews/...craft_1_01.htm I've also read more about it in some German aviation magazine. I had high hopes for this aircraft as it would have been the first application of the brand new TAE Centurion 4.0 turbodiesels. Kumaros It's all Greek to me |
#41
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![]() Kumaros, thank you.
It seems the pylon is too large and/or too close to the prop, and the rising turbulent airflow off the wing is entering the prop disc, aaaaand on top of that, the spiral flow off the props is entering the stabilator. How unlucky can you get ?? I wonder why they didnt just swap to pusher configuration. Maybe that would be worse. Well, the Cozy doesnt have a rear stabilator behind the engines, and the pylon can be smaller because it doesnt contain radiators or driveshafts, and we can choose tractor or pusher config. Any ideas on avoiding the rising turbulent(?) flow from the lift surfaces ? Mount props higher and further forward ? S |
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