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HelicopterAerial Photography and Video › Altitude and airspeed indicators
04-26-2004 07:49 PM  13 years agoPost 1
airshares

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Thousand Oaks, CA

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Are there any systems out there that tell you what altitude your heli is at and airspeed or rate of climb/descent while its flying.....not downloaded after the flight.

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04-26-2004 09:27 PM  13 years agoPost 2
cyborg

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Westchester, NY

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One way to achieve this would be to use GPS telemetry data. There are systems for this, but as you might expect, they are not cheap. you can get some cheap GPS receivers on Ebay, and then, using a special board, convert their signals to 'audio'. This audio can then be modulated with a PSK modem (they are about 200 bucks) and transmitted to the ground for decoding to a receiver (2.4ghz, or 900Mhz if you are a Ham), and GPS software on say a laptop Computer.

Do you know of Eagle Tree systems?

http://www.eagletreesystems.com/

They have a very nice system, and rumor has it they are working on a wireless version of it, that should be out in about a couple of months.

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04-27-2004 02:45 AM  13 years agoPost 3
llamatrails

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Gainesville GA - USA

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Another way is to use a video overlay board on your downlink. Reasonably priced.

Check out :
http://www.icircuits.com - their OSD-GPS
http://www.sky-spy.bigstep.com

Rick

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07-19-2004 09:09 PM  13 years agoPost 4
Strega

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Sharks Territory, CA

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RCATS

Take a look at RCATS' wireless telemetry system.

http://www.rcatsystems.com

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07-20-2004 02:12 PM  13 years agoPost 5
Torsten

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Germany

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i have a source here in germany that can supply that in a small package. altitude, heading, voltage of the rx, etc. the data is displayed in the downlink picture.

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07-20-2004 04:39 PM  13 years agoPost 6
ImRich

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Derry, NH USA

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I guess I have to ask why?

You are adding weight and complexity to your system. What purpose does it serve? Unless you want the data on your photo's for your customer's purposes?

Or is it just for the 'wow - cool technology' factor?

In that case, why not?

---
Rich

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07-21-2004 06:17 PM  13 years agoPost 7
airshares

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Thousand Oaks, CA

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Why

The reason I want it is so that I can see in real time what airspeed the heli is at and adjust to keep it constant when doing video. I want the altitude indicator to tell me what altitude im at and enable me to keep my heli at a constant altitude. It will also tell me if IM decending or climbling in the case that heli is so small I visually cant tell what it is doing. I think it would be great for hovering at high altitudes for extended periods of time. You could fly up to a certain alitude and maintain it then just keep your airspeed at 0 and that means you are hovering fairly level because if anyone of your indicators changes you are moving. I just need it to help me with heli attitudes when it gets so small its hard to tell what its doing.

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07-21-2004 08:12 PM  13 years agoPost 8
Torsten

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Germany

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what is high ?

i fly without gadgets to 360 feet in good light conditions. in overcast gloomy weather i am still good for 250 or so.

airspeed in a model helicopter ? only with gps i think and with that you still have at least a 30 foot variation of the gps signal during hover. i guess you can see better than that. for the altitude. how about one of those varios with a little speaker in the ear. the glider pilots use those. i would think listening and adjusting to a noise would be easier than watching little numbers.

just my 2 cents worth

t

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07-22-2004 01:09 PM  13 years agoPost 9
ImRich

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Derry, NH USA

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maybe it's just me, but I think you'll do better watching your heli than watching a display in controlling your airspeed and altitude. There may be some lag in the indicated displays, plus you don't want your eyes off the heli very often or for very long IMHO.

But let us know how it works for you. Sharing experiences is what it this is all about.

---
Rich

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07-22-2004 02:00 PM  13 years agoPost 10
smudge

rrApprentice

Wiltshire, UK

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I saw somewhere that there is a gadget that the RC soarers use. It measures the vertical speed, and transmits a variable tone to your earpiece. Higher pitch for climbing, lower pitch for descending. The pilot can then tell immediately if it is in lift, and starts his turn. And, more importantly for your application, you not need to look at any displays.

Maybe this is what you are looking for? I am sure that the same technology could be used for airspeed if you wanted.

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