The Cooper Union - Unmanned Development Team

UAVforge.net Entry,

 

The Aeolis UDMA

 

Let me know about any improvements you guys can come up with, and vote for it if you like it!

Views: 820


3D Robotics
Comment by Chris Anderson on October 25, 2011 at 10:26pm

If you want us to vote for it, it would help to link to this project on the UAVForge site


3D Robotics
Comment by Julian on October 25, 2011 at 10:30pm

Its an idiotic Flash Based website, the youtube link is the best i could do.


3D Robotics
Comment by Chris Anderson on October 25, 2011 at 10:35pm

Ugh. I remember now. My condolences ;-)


Moderator
Comment by Gary Mortimer on October 25, 2011 at 11:29pm

I am cobbling together a page of entries http://www.suasnews.com/2011/10/9204/uavforge-entries/ so will add this one. Team Icarus Labs is also using Ardupilot.

 

http://www.suasnews.com/icarus-labs/

 

Its here for voting, http://www.uavforge.net/ and yes its a horrid site!

Comment by Edward Strickland on November 3, 2011 at 1:29pm

Julian

have a look at these links, http://www.rcgroups.com/forums/showthread.php?t=653652

which eventually developed into http://www.guidedsys.com/VTOL/sicx-300v-uav.php

and i guess this as well

http://www.youtube.com/watch?v=NC33z1QvaaY

 

this type of transition is unstable, utilizing a stall at height. Better to climb out but this requires power and thrust.

CofG will be your major issue for stability in hover you will need it low.....conversely fixed wing flight will require a fwd CofG. An AP suitable for unstable flight may solve some problems.

Ed 


3D Robotics
Comment by Julian on November 3, 2011 at 1:58pm

I had seen the Vbat at the start of the project, using it as a bit of inspiration and a reminder that "stable" VTOL flight is possible with the CG above the propellor. I am going to be relying heavily on the autopilot to make the airplane flyable, so as to minimize the effects of the compromise between the position of the cg for both flight modes. Im looking at a thrust to weight ratio of about 1.4 : 1 which is cutting it a bit close, but i think it should still be able to make it out of a transition. Im not looking to do a stall based transition, i was thinking more along the lines of gradual arc from vertical to horizontal.

 

I had seen your comment on someones question pertaining to ducted fan design, any rule of thumbs you could offer? I have a decrease in outlet area on a ~4 degree slope from the inlet area to get a bit of compression, but seeing as this is operating more as a shrouded propeller than a ducted fan, is it worth it? I have a 1250 watt motor that im probably (depending on testing) going to use a 3 Blade propeller on to get a good amount of disc loading in the comparatively small [to the dia of the recommended propellors] duct diameter im using. 

 


3D Robotics
Comment by Julian on November 3, 2011 at 2:35pm

Alot of other similar platforms rely on the same vane control system with a smaller moment:

Hover Eye: http://defense-update.com/products/h/hovereye.htm

Honeywell VTOL: http://www51.honeywell.com/aero/common/documents/myaerospacecatalog...

Tailsitter Flying Wing: Just found this (to my pleasant surprise) http://contentdm.lib.byu.edu/ETD/image/etd2372.pdf

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