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HelicopterMain Discussion › Need Help Picking the Right RC Helicopter for Engineering Design Project
10-20-2015 07:12 PM  26 months agoPost 1
hrk175

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Hartford, CT - USA

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Hello,

My team at Trinity College in Hartford, CT has to design a helicopter landing system over the course of our entire senior year. It is the biggest project of our lives and we need your help! The landing system will have pressure sensors that signal to a servo motor that raises or lowers one of the landing sleds, allowing the copter to land leveled on a non-flat surface. We are having trouble finding the right rc helicopter to fit our system to. Our budget is around $500. We are leaning towards a quad-rotor copter because it will be able to stay level by adjusting the speed of individual rotors. Because the helicopter is not the main focus of our project, it is important that we choose one that can do the following things:

- Lock onto a location and allow us to adjust the altitude while the position remains fixed.
- Can still fly evenly and without error when weight is added or weight distribution is changed.
- Will automatically change rotor speeds to stay level when an external change is made (wind or weight change).
- Relatively easy to fly (even though we have all year to learn to fly it well, we have little rc helicopter flying experience).

Does anyone here have any suggestions on what kind of helicopter to use for this project?
Thank you in advance for your help!

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10-20-2015 07:21 PM  26 months agoPost 2
Stephen Born

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USA

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...

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10-20-2015 07:22 PM  26 months agoPost 3
ticedoff8

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Morgan Hill, CA. USA

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Quad or hexa copter is your best bet.

Look into the DIY kits, then buy the parts and assemble it yourselves.

There are several controllers you could use.

But, a $500 budget is going to be pretty tight.

Believe 1/2 of what you see and none of what you hear.
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10-20-2015 07:25 PM  26 months agoPost 4
hrk175

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Hartford, CT - USA

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Do you have any specific models or kits we should look into? One option we were looking at was the Walkera QR X350 Pro.
Also, the $500 budget can be increased by a few hundred, if necessary.

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10-20-2015 07:31 PM  26 months agoPost 5
old nitroman

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Naples florida

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A Quad is the only way to go most have self leveling, an hold there place well, some have a gps system. I think your best bet would be to go to a local hobby shop and pick there brains, what would be cost effective for you project.

E5s and E7se,and a 766, Roban bell 222 800 superscale,450 bell 4 bladed head,gobby 380and 420 ,180cfx

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10-20-2015 08:01 PM  26 months agoPost 6
Stephen Born

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USA

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10-20-2015 08:07 PM  26 months agoPost 7
xcellgasman101

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WOODWARD, OKLA....

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Look into buying a used Phantom,, I have one, and it flies great, with plenty of repair parts, just about any online store, I have had mine for several years now, and have yet to change out a prop...XGM/VGM

John Crotts
www.soonerhelicamproductions.com

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10-20-2015 08:21 PM  26 months agoPost 8
Heli Fanatix

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Fountain Valley, CA

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If I'm understanding correctly, they already develop something like that already for a FB setup.

https://rc.runryder.com/helicopter/t796214p1/

- Scott

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10-20-2015 08:26 PM  26 months agoPost 9
Ace Dude

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USA

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Sounds like they need to come up with something similar for a school project. I'd also suggest going with a multirotor vs. a heli for this project.

  

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10-20-2015 09:59 PM  26 months agoPost 10
ticedoff8

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Morgan Hill, CA. USA

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I would not use a conventional helicopter configuration either.

The multi-rotors are so simple that an idiot can fly them.
That's why the DOT & FAA are starting a "drone registration" program so they can track down the idiots that fly them into close proximity to passenger planes.

The website http://www.hobbyking.com has everything you need for DIY multi-rotors.

They have the frames, motors, ESC, batteries and flight systems.

Look in AMA "Model Aviation" magazine for many details on multi-rotors and suppliers.
Radio Control Heli pilot has a sister publication for multi-rotors

The key is to keep the costs down.

If you buy an "off the shelf" multi-rotor, then replacement parts will come from that manufacturer.
And you will pay that manufacturer's retail price for parts.

A DIY frame can be assembled from bulk carbon fiber tubes and flat stock.
Once you see how it is done, you will know how to build your own frame.
And bulk CF material is cheap.
I buy stuff from CST: http://www.cstsales.com/carbon_shapes_subpg.html
But, there are cheaper places to buy from.

The cost of the motors & ESC can be mitigated by buying a "pack" of 4 motors and 4 ESC from someplace like Hobby King.
These are relatively durable and may last quite a while

The flight system with things like GPS, return home, barometric or laser altitude measurement, stability augmentation and such are were the real costs will eat you up.

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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10-20-2015 11:21 PM  26 months agoPost 11
mr dan

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Stockton Calif

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DARPA has done this already. Landing system that alows the helicopter to land level on any uneven or sloped surface.

"R.I.P Roman" Citizen 0094 in the Nation

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10-21-2015 05:48 PM  26 months agoPost 12
Héli Suisse

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Geneva Switzerland

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DARPA has done this already. Landing system that alows the helicopter to land level on any uneven or sloped surface.
Absolutely right: have a look there
https://rc.runryder.com/helicopter/t796713p1/

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10-21-2015 07:56 PM  26 months agoPost 13
RM3

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Killeen, Texas - USA

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sweet project! yeah go with a quad other wise you'll spend all you time and money trying to fix and fly the heli....
DARPA has done this already. Landing system that alows the helicopter to land level on any uneven or sloped surface.
and its also overly complicated IMO...
the skid design can be a tripod with a center ball joint...once a load cell registers enough of the quads weight on the joint (can even be a spring adjustable with a limit switch), then signal to lock the ball joint, then land...done.

showing a preference will only get you into trouble, 90% of everything is crap...

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