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HelicopterTurbine Helicopters › Multicom/ Carvec Turbine
03-30-2005 09:38 AM  13 years agoPost 21
JohnC

rrVeteran

East Yorkshire, England

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Hey Plumplemming,

If you can park a heli in the sky with the co-pilot then all my efforts bringing in GPS control will be in vain.

I think co-pilot is useful as a 'rough' tool. It is affected by too many things to be a accurate as you say. I know someone who would spend 30mins calibrating the co-pilot, then he could manage 15-20 seconds hands-off the right stick before it had drifted too far away. Of course, he turned the heli and this calibration was now out.

As you say, there are different systems at different prices. The co-pilot is very simple and cheap : but it can never work as well as an inertial system where the end-goal is to provide a stable platform.

I look forward to learning of your own experiences with the co-pilot.

JohnC.

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03-30-2005 07:37 PM  13 years agoPost 22
plumplemming

rrNovice

UK

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John,
don't get me wrong I think your system is very good I was very impressed when I saw it in action . I beleive your description of the co-pilot as a "rough tool" to be a bit unfair, I wasn't trying to compare it to your system.I agree with you about drift etc & I know it won't hold a position any way near as good as a gps system, but for a cost effective way to get a fairly stable platform to possibly work from I think it's a good start .

I will keep you posted on my progress with it.....


Plumplemming

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03-31-2005 08:23 PM  13 years agoPost 23
RV-4Mike

rrApprentice

San Diego, Ca.

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The website indicates the Carvec system is inertial based, not IR based as someone else here mentioned. So which is it?

To repeat questions asked by somebody else here, is it available in the US, and what is the US price?

Finally, someone mentioned it was compatible with 3 servo ECCPM. Will it work on my non-ECCPM Bergen gasser?

Mike

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03-31-2005 09:00 PM  13 years agoPost 24
Disciple4123

rrKey Veteran

USA

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It is inertial based, will keep the heli level with an Attitude and Heading Reference System A.K.A. AHRS. It does not need calibration prior to each flight, drift due to the sun, etc. He provided me with video footage of the system on a basic nitro bird and I was impressed. I calculated the exchange rate to put the price at about $4,000 USD two months ago based on my communication with John Cunnigham. I saw no problem with it working with my Bergen when I was talking to him back then, as I told him what it was going on. John has no point of distribution in the US, you just e-mail him and he gets right back to you and he will ship to the USA. It seems that he is straightforward in his transactions based on my communication with him as well as other posts here. I do not have one of his systems, but likely will within a year or so.

Hope that helps,
Eric

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04-01-2005 08:10 AM  13 years agoPost 25
NEIL2-UK

rrApprentice

UK - South East

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CARVEC and AutoPilot
To Those with knowledge

The difference with CARVEC system and AuoPilot, from my experience... is like 'chalk and cheese'. Completely different packages.

I agree that the prices are completely different... but one is Professional and the other is basic Hobby.

I have incorporated a version of the CARVEC system as a Flight Stability Package for the large scale turbine helis... yes, it as an expensive flight aid, but if you want certainty of control without Busting your B**ls, it is a great aid to flying, from take-off to landing.

Plumplemming... you would struggle to leave heli in a hover and take your hands off... and as a stable flight control camera platform I would be unsure of that.
Have You used the system yet?

The other system that is a basic hobby package is the 'light sensative' system for checking horizon... not very effective, but comparable to autopilot. One operates on IR heat source and the other operates on Light Differences between the Bright Sky and Dark Ground.

God Luck with your flying

NEIL

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04-01-2005 08:40 AM  13 years agoPost 26
mcatech

rrVeteran

Mount Gambier SA Australia

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Hi Neil
Just wondering if there has been much more development
with the simplified version of the Carvec flight unit
it is something that definately has my interest and I feel that it would be an enourmous advantage to Solo aerial photography
I am desperately trying to convert to a 1 person system as I am finding it tough to have a camera opertator to fit in with my plans when jobs
arrise I have that such issue for this comming Sunday
Cheers Michael

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04-08-2005 07:41 AM  13 years agoPost 27
JohnC

rrVeteran

East Yorkshire, England

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Hey Chopper Jockey,

I assume you flew the Logo-20?. It was fitted with a flight-recorder module, and I had a look at the data for your flight.

The graphs below show the pilot-demanded pitch angle of the helicopter (the pink line) and the actual pitch angle (the blue line). CARVEC automatically flies the helicopter to try and match the two.

The top graph shows me hovering just before you did. As you can see, I am doing a lot less work on the stick for a more stable hover. Your response is quite normal for an experienced 'regular' pilot. As the helicopter reaches the angle you want, you are instinctively putting in opposite control to stop it. Of course, the system now follows this new stick position and you enter a slow oscillation.

Once you learn to trust the system, you just put the stick where you want the heli and leave all the hard work to the computers.



JohnC.

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