Replies to This Discussion

Permalink Reply by Ujjwal John on June 3, 2011 at 7:26am

I found the plan for BigBro:

 

http://www.willingtons.com/files/Free_Plans/Big%20Brother%20-%20Pus...

 

http://www.balsadust.net/thomas.vogel/Files/Plans//RC/Glider/bigbro...

 

Did any one build it finally ? Looks awesome.

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Permalink Reply by Leandro Chaves on November 22, 2011 at 9:49am

I have made download of the file and dont "unzip" .... the message of computer is that de file is corrupted !

Anybory have a file to sent ? leandro.chaves@yahoo.com.br

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Permalink Reply by Ujjwal John on November 22, 2011 at 10:07am

Sent you the plan to to mail id Leandro. I have modified the Fuse for larger cockpit space. I can send those too.

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Permalink Reply by Leandro Chaves on November 22, 2011 at 10:17am

Thank you Ujjwal John,

I had received your e-mail and attached file ! 

Did you fly with this model ? What you think about it ?

Did you have some pictures about it ? Please, sent to my e-mail.

I very happy to get it ... Thank you so much for sending the file.

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Permalink Reply by muhammad faisal on March 17, 2009 at 1:56am

This must a Pakistani drone named Uqaab. Its my guess though, not certain.

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Permalink Reply by tycinis on March 17, 2009 at 2:44pm

your right , it's a Pakistani drone :

http://www.pro-pakistan.com/2008/03/21/uqaab-pakistan-indegeneous-uav

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Permalink Reply by Ryan on March 17, 2009 at 5:43pm

It's a project by a couple guys here in South Australia based on the Shadow platform. They had issue with the inverted V-Tail config so they re-designed it with the H-Tail configuration.

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Permalink Reply by Simon Butterworth on April 3, 2009 at 12:42am

Hi Guys,
This UAV is definitely not a Uqaab and Stikmunkey has it correct. Our UAV is called AusSky and is designed and manufactured by us at Avitus UAV Systems here in Australia. Our UAV is commercially available and if you have any question please don't hesitate to ask. We should have our web site up soon with full details on the platform.
Regards,
Simon

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Permalink Reply by Mike Bakula on April 30, 2009 at 5:31am

What was the issue with the inverted-v? I'd have thought that was close to optimal.

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Permalink Reply by Simon Butterworth on May 3, 2009 at 2:37am

Hi Mike,

The issue we had was yaw stability, when you threw in a rudder doubler techinique it would yaw oscillate approx. 8 times before it became stable again. The aircraft would fly, but we wanted an airframe that was more stable.
I think if the V-tail was taller, it would certainly improve this issue.

Attachments:

• IMG_1373 resized.jpg, 143 KB

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Permalink Reply by Mike Bakula on May 3, 2009 at 5:58am

Yes, that's what I would try too, along with perhaps an increase in tailplane area. I've seen theories predict a V-tail will have less area, but by the time development is done, the area always ends up the same as a conventional tail. (I still like them for their reduced interference drag and pro-verse yaw characteristics.)

Thank you for adding the in-flight picture!

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