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Search: Posts Made By: davh12
Showing results 1 to 35 of 55
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Forum: Rotorheads
19th Aug 2012, 21:45
Replies: 58
Views: 9,685
Posted By davh12

Crash damage H L damgeipod - YouTube

Crash damage

H L damgeipod - YouTube
Forum: Rotorheads
19th Aug 2012, 21:43
Replies: 58
Views: 9,685
Posted By davh12

Still not satisfied. Repairs made....my...

Still not satisfied. Repairs made....my fault....cheap hardware.
Airframe hit the ground from 15 feet....airframe was more rugged than I had expected. The combination adhesive with carbon fiber...
Forum: Rotorheads
14th Aug 2012, 16:43
Replies: 58
Views: 9,685
Posted By davh12

Sorry it has been so long. 2nd prototype of my...

Sorry it has been so long. 2nd prototype of my patent is up and flying.
This effort is not an attempt to replace any UAS. It is simply an update on my approach/effort to civil UAS and manned...
Forum: Rotorheads
21st Nov 2011, 10:06
Replies: 58
Views: 9,685
Posted By davh12

I've been working with a frenzy trying to finish...

I've been working with a frenzy trying to finish my wife's chair and end table along with my project. Got everything loosely put together yesterday and something on the bottom of the motor burnt out,...
Forum: Rotorheads
6th Oct 2011, 21:31
Replies: 58
Views: 9,685
Posted By davh12

I was running down the batt. in order to do a...

I was running down the batt. in order to do a re-charge prior to the 2nd intended tether. The mixer burnt out. Parts ordered. "Murphy".

Dave

http://www.youtube.com/watch?v=Ll-RGeUF0BM
Forum: Rotorheads
29th Aug 2011, 23:38
Replies: 58
Views: 9,685
Posted By davh12

4th servo actuation with the changes. Small...

4th servo actuation with the changes. Small adjustments here and there. Lower mast bearing mount changed from doubling as the upper motor mount to now being the lower motor mount/lower mast bearing....
Forum: Rotorheads
28th Aug 2011, 00:12
Replies: 58
Views: 9,685
Posted By davh12

Upper mast bearing mounted; a few small changes...

Upper mast bearing mounted; a few small changes need to be made; not using a power train from the motor to the reduction gear because the couplings are too long.

Dave

9bq47omxzXQ
Forum: Rotorheads
26th Aug 2011, 20:29
Replies: 58
Views: 9,685
Posted By davh12

New mast bearing in. More work to do this...

New mast bearing in. More work to do this week-end.

Regards,

Dave
Forum: Rotorheads
24th Aug 2011, 20:51
Replies: 58
Views: 9,685
Posted By davh12

Back from con leave. They took the cast off...

Back from con leave. They took the cast off yesterday, but still walk like a pirate. Within 3 weeks I hope to have updates and hopfully a 2nd flight test.

Dave
Forum: Rotorheads
4th Aug 2011, 19:24
Replies: 58
Views: 9,685
Posted By davh12

Temp web site until I get the other one up and...

Temp web site until I get the other one up and going.
Apparently the word "blog" is a no no here. I hate blogs as well, but go to google and search for "envisionrotorsystems" with regard to blog.
...
Forum: Rotorheads
29th Jul 2011, 18:09
Replies: 58
Views: 9,685
Posted By davh12

My web site is down until I find another...

My web site is down until I find another provider. I have found one and it should be up in a couple of weeks. Had surgery; in the process of recovering. Too many years in the Infantry. You can track...
Forum: Rotorheads
14th Jul 2011, 12:54
Replies: 58
Views: 9,685
Posted By davh12

Sorry it's been so long. I was in the field for a...

Sorry it's been so long. I was in the field for a week and going to the field for 10 days next week. Such is my life in the Infantry. All that I have been able to do lately is gather parts for when I...
Forum: Rotorheads
26th Jun 2011, 15:46
Replies: 58
Views: 9,685
Posted By davh12

Delta 3 flapping axis, underslung hub and lower...

Delta 3 flapping axis, underslung hub and lower mast bearing/upper motor mount.

Regards,

Dave

1Hz-Bhx4KUk

KV6g97x0-N4
Forum: Rotorheads
19th Jun 2011, 16:40
Replies: 58
Views: 9,685
Posted By davh12

finished the battery/receiver mount assembly,...

finished the battery/receiver mount assembly, attached lower motor mount, started the upper bearing/motor mount. Video clip is the 2nd servo acutation, 1st servo after airframe changes....
Forum: Rotorheads
13th Jun 2011, 00:46
Replies: 58
Views: 9,685
Posted By davh12

Glock......thanx. Lower airframe has a...

Glock......thanx.

Lower airframe has a wider foot print now for stability when the prototype gets light on it's frame.

http://www.envisionhelicopters.com/100_0922_op_680x510.jpg
Forum: Rotorheads
5th Jun 2011, 21:20
Replies: 58
Views: 9,685
Posted By davh12

Most of the parts are cut out of carbon fiber for...

Most of the parts are cut out of carbon fiber for the changes to the airframe. Trying to catch up.

Dave


http://www.youtube.com/watch?v=QGhSK_xf_H4
Forum: Rotorheads
15th May 2011, 19:20
Replies: 58
Views: 9,685
Posted By davh12

Partial summary of the issues that need to be...

Partial summary of the issues that need to be addressed and my approach. CF ordered from Sierra Composites. Waiting.

Regards,

Dave
http://www.envisionhelicopters.com/HIR_Partial_Summary.pdf
Forum: Rotorheads
26th Apr 2011, 16:42
Replies: 58
Views: 9,685
Posted By davh12

Lower mast bearing housing came loose. Torsional...

Lower mast bearing housing came loose. Torsional flex developed during tether flight; forward/aft has good transition. Lateral had a tendency to roll over...........shaft collar lock was too close to...
Forum: Rotorheads
23rd Apr 2011, 18:34
Replies: 58
Views: 9,685
Posted By davh12

Lower mast bearing mounted, mast attached, main...

Lower mast bearing mounted, mast attached, main drive motor mounted. Picture below, airframe is inverted allowing the glue to dry for the lower bearing housing. Still on track for tethered flight...
Forum: Rotorheads
19th Apr 2011, 22:34
Replies: 58
Views: 9,685
Posted By davh12

Birddog, Thanks. Hope you and your family...

Birddog,

Thanks. Hope you and your family have a Happy Easter. Godspeed.

Dave
Forum: Rotorheads
19th Apr 2011, 21:45
Replies: 58
Views: 9,685
Posted By davh12

Perhaps....., but one patent in the works and...

Perhaps....., but one patent in the works and DARPA and a few others reviewed it.....said it had merit.....whatever.
Look at Baldwin technologies:
Baldwin Technology Company, LLC...
Forum: Rotorheads
18th Apr 2011, 16:20
Replies: 58
Views: 9,685
Posted By davh12

All, internet has been down due to...

All,

internet has been down due to remodeling. using the library. 4th CG hang test good. First tethered flight this week-end. Fingers crossed.
Dave


YouTube - Morph 3 Ipod Video

...
Forum: Rotorheads
27th Mar 2011, 19:19
Replies: 58
Views: 9,685
Posted By davh12

Fabricated a new rotor hub to fit the blades; no...

Fabricated a new rotor hub to fit the blades; no issues with balance. Shortened the titanium rotor mast and mounted the hub to the mast with one of the first rubber grommets (upper) that will allow...
Forum: Rotorheads
27th Feb 2011, 17:35
Replies: 58
Views: 9,685
Posted By davh12

Third center of gravity hang test. YouTube...

Third center of gravity hang test.

YouTube - HIR-CG3 (Ipod Video).mov (http://www.youtube.com/watch?v=SZi9SfjPDqk)
Forum: Rotorheads
27th Feb 2011, 17:31
Replies: 58
Views: 9,685
Posted By davh12

More trimming of the upper airframe needed. ...

More trimming of the upper airframe needed.


YouTube - HIR-5 (Ipod Video).mov (http://www.youtube.com/watch?v=O-u43j-IYB0)
Forum: Rotorheads
26th Feb 2011, 17:18
Replies: 58
Views: 9,685
Posted By davh12

Helisphere, Sorry it's been so long. I read...

Helisphere,

Sorry it's been so long. I read your last post just prior to the 4 day week-end and then went to the field. Back and clean again......4 days in the woodline.
I agree with you and I...
Forum: Rotorheads
3rd Feb 2011, 21:27
Replies: 58
Views: 9,685
Posted By davh12

Yep..........I wanted to start the tilt out a...

Yep..........I wanted to start the tilt out a little at a time. Servo arm change outs will give it more range of motion. Another pilot mentioned the same about the speed for a single place with...
Forum: Rotorheads
3rd Feb 2011, 19:53
Replies: 58
Views: 9,685
Posted By davh12

Between 3 and 5 degrees depending on servo...

Between 3 and 5 degrees depending on servo adjustments............but I have not measured it just yet. Made servo adjustments to prevent over manipulation or too much tilt. The tethered flight was...
Forum: Rotorheads
2nd Feb 2011, 21:36
Replies: 58
Views: 9,685
Posted By davh12

Distance between the diameter ref.line to the end...

Distance between the diameter ref.line to the end of the radius ref line
Forum: Rotorheads
2nd Feb 2011, 20:28
Replies: 58
Views: 9,685
Posted By davh12

Yep..you are absolutley right.............wrong...

Yep..you are absolutley right.............wrong choice of words. The distance, as you noted, was what I was making reference to. Thanx for pointing that out. Almost stepped on my crank with that one....
Forum: Rotorheads
1st Feb 2011, 20:12
Replies: 58
Views: 9,685
Posted By davh12

new motor for CF platform. still tweaking ...

new motor for CF platform. still tweaking

http://www.envisionhelicopters.com/100_0818_op_680x510.jpg
Forum: Rotorheads
29th Jan 2011, 15:34
Replies: 58
Views: 9,685
Posted By davh12

Aluminum airframe mock up prior to switching back...

Aluminum airframe mock up prior to switching back to the gimbal joint. Shown here is a spherical in place of the gimbal which may work, but will require the use of the alternate tilt mechanism.
...
Forum: Rotorheads
23rd Jan 2011, 19:47
Replies: 58
Views: 9,685
Posted By davh12

Latest carbon fiber test platform clip for servo...

Latest carbon fiber test platform clip for servo actuation of morphing airframes.

Dave

YouTube - HIR-3(Ipod Video).mov (http://www.youtube.com/watch?v=jFE4P8cE1qk)
Forum: Rotorheads
17th Jan 2011, 20:21
Replies: 58
Views: 9,685
Posted By davh12

New updates at my web site. Gear mounted on...

New updates at my web site. Gear mounted on titanium mast......now I need a new electric motor w/ larger spur gear.
Forum: Rotorheads
9th Jan 2011, 20:49
Replies: 58
Views: 9,685
Posted By davh12

X-mas vacation has me behind. Got the new...

X-mas vacation has me behind. Got the new reduction gear............smaller ratio. I'm sanding the titanium mast down today. I had hoped to have the gear mounted on the mast today, but I'm taking it...
Showing results 1 to 35 of 55
 
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