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Old Sep 02, 2014, 11:02 AM
CNC Cutter
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United States, IN, Indianapolis
Joined Dec 2005
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Thanx Flight test

I've been doing the V44 for F&T for years.

Bob
Hoosier Cutout Service
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Old Oct 02, 2014, 10:46 AM
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Philippines, Central Luzon, Marilao
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Hi guys any pics or details on the tilting mechanism?
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Old Nov 09, 2014, 01:48 AM
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United States, CA, Ukiah
Joined Jan 2011
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8 degree tilt

Can anyone explain why the motors are tilted towards each other 8 degrees in hover?
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Old Nov 09, 2014, 02:37 PM
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It uses a well known NASA technique called "cattywampus construction" where each piece of the aircraft is purposely slightly out of faze creating a synergistic harmonics in the airframe that assists with lift by cancelling out unwanted forces. In other words, it's like that because it's made out of foam and tape.
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Old Nov 09, 2014, 07:03 PM
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beavercreek,ohio
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I'm dying of laughter, RCvertt... Ahahahah however your diagnostics of my airframe design is pretty spot on!
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Old Nov 09, 2014, 07:14 PM
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United States, IN, Granger
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It actually isn't to far off Rcvertt ,, the real V uses bidirectional carbon fiber to do away with unwanted harmoics .... and actually on the real V it used about 4 degrees of out nacelle angle for stability purposes.

I used by directional plywood sub frame in the NASA Puffin to eliminate wing vibrations
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Old Nov 09, 2014, 07:38 PM
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Good to know. I'm a devout follower of "foam and tape's" building methods
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Old Nov 10, 2014, 06:25 AM
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If you plan on using the nacelle tilt to control pitch, then you definitely don't want the tilt axis to be canted inward. It would reduce the distance between the tilt axis and the CG.
As for the fore/aft tilt, it helps a bit with pitch stability in slow forward flight, and depending on the direction of rotation of the rotors it improves yaw control in a hover.
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Last edited by Brandano; Nov 10, 2014 at 06:36 AM.
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Old Nov 11, 2014, 07:44 AM
aeronaughtycal
Joined Nov 2014
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amzaing thread ..... i was planning on building a vtol myself for the past couple of weeks but after watching you guys i am more determined to build one .... i am sure i can count on you guys for help
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