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Forums
4hv.org :: Forums :: General Science and Electronics
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69mm Electric Ducted Fan, 2.8 lbs Static Thrust...

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2Spoons
Mon Feb 06 2012, 09:54PM
2Spoons Registered Member #2939 Joined: Fri Jun 25 2010, 04:25AM
Location:
Posts: 615
Can you get them designed for reverse rotation? otherwise you need some way to compensate for the fan torque.
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Patrick
Tue Feb 07 2012, 01:06AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
2Spoons wrote ...

Can you get them designed for reverse rotation? otherwise you need some way to compensate for the fan torque.
Im not using the turbine any more the turbo lag is to great. The better power 10 motoe will use a conventional prop, and one will be CW the other CCW.
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Carbon_Rod
Tue Feb 07 2012, 02:38AM
Carbon_Rod Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
The aeroquad software and hardware wiki:
Link2

Note a Directional Cosine Matrix is faster on some chips:
Link2

git hub (based on sparkfun IMU):
Link2

Some of these designs are fairly amusing:
Link2
Link2

Cheers,
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Patrick
Tue Feb 07 2012, 02:50AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Carbon_Rod wrote ...

The aeroquad software and hardware wiki:
Link2

Note a Directional Cosine Matrix is faster on some chips:
Link2

git hub (based on sparkfun IMU):
Link2

Some of these designs are fairly amusing:
Link2
Link2

Cheers,

Great links!!!

the guy in the last link hurt himself sad
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Carbon_Rod
Tue Feb 07 2012, 02:57AM
Carbon_Rod Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
He also flys a mini quad into a tesla coil:
Link2

These kind of students can get a few people injured.
=/
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Patrick
Tue Feb 07 2012, 04:53AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Carbon_Rod wrote ...

He also flys a mini quad into a tesla coil:
Link2

These kind of students can get a few people injured.
=/
Its interesting to see the HV strike only temporarilly reset there drone.
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Daniel Kramnik
Sat Feb 11 2012, 02:38AM
Daniel Kramnik Registered Member #3885 Joined: Sun May 15 2011, 12:47AM
Location: Newton, Massachusetts, United States
Posts: 94
Hey guys, I built the Tesla coil he flew that into!

=P
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Patrick
Sat Feb 11 2012, 02:50AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
im switching over to two 9 x 4.7 counter rotating prop pairs.
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