Simviation Forum - Independent Control on Multi-Engine Helicopters

Jun 21^st, 2011 at 10:37am

Eng. Rafael Coronel Offline
Captain
Santos Dummond - Aviation
Father
São Carlos, Brazil

Posts: 3

Hi guys,

I've been developing aircrafts for MSFS for a long time. However, this is actually the very first time I design a multi-engine helicopter (4 motors). I've been searching a way to independently control those 4 motors but I haven't found any clue about how to achieve that.
Sounds like MSFS handles the control of multiengine aircrafts in the configuration of an ordinary airplane (motors parallel to Earth).
Please, I'd appreciate a lot if someone can help me on that task.
By the way, I use GMAX to design my helicopter.

Regards!

Rafael Coronel

Viva Santos Dummond!!!

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Reply #1 - Jun 21^st, 2011 at 5:10pm

Opa Offline
Colonel
Fly FS
Plano, Texas

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Posts: 634

If you have not already done so, I suggest you visit the HoverControl website.

It is dedicated to all things Helicopter related and the "hard core" rotor-heads hang out there.

http://www.hovercontrol.com/

Good Luck on your project.

David "Opa" Marshall

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Reply #2 - Jun 21^st, 2011 at 9:15pm

Strategic Retreat Offline
Colonel
Wish people were less
idiotic as an average

Posts: 603

The limitation of FS control on single engine on a multiple engined craft, I fear, can only bridged, and sadly only partially, using purposefully coded XML gauges. I fear you either must find the help of a XML coder or learn to code XML yourself, to bring your project to a satisfying conclusion. Undecided

For the rest, I know very little about helicopters and only was able to make big holes on the virtual ground with the simulated ones. Cannot help you there. Tongue

There is no such a thing as overkill. Only unworthy targets.

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Reply #3 - Jun 21^st, 2011 at 11:12pm

Capt.Propwash Offline
Colonel
Let's get a little mud
on the tires!
KCHS, Charleston, SC, USA

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being one of the "rotor-heads" over at HoverControl.com (HC271CA_Cappy *CP*) the best person for you to talk to over there is Jordan Moore. He is the website owner / and he does design helos in what little bit of free time that he actually gets. Good Luck trying to get in touch with him.

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Reply #4 - Jun 25^th, 2011 at 1:10am

Ivan Offline
Colonel
No, I'm NOT Russian, I
only like Russian aircraft
The netherlands

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Posts: 6058

Let me guess... you are making a Mil-Mi V-12?

Russian planes: IL-76 (all standard length ones), Tu-154 and Il-62, Tu-134 and An-24RV&&&&AI flightplans and repaints can be found here

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Reply #5 - Jun 26^th, 2011 at 4:43pm

Eng. Rafael Coronel Offline
Captain
Santos Dummond - Aviation
Father
São Carlos, Brazil

Posts: 3

Not at all Ivan.
My question concerns to general 4 motors helicopters. In this case, a quadrotor.
There must be a limitation in MSFS to helicopters, but I'm not still sure. MSFS probably treats thrust in helicopters like a unique force upwards and the roll/pitch/yaw comands are simply given by the joystick. It means that we cannot simulate the torques that are produced, e.g., in aircrafts. For example, when you fly the 737 and you apply full throttle to engine 1 and engine 2 remais off, a torque is produced clockwise over the airplane z-axis.
My idea is to produce the same forces over the axis of a quadrotor by applying different thrusts to different engines.
I've found it hard to determine it in Gmax or even in the MSFS "air" file.
Any ideas?

Viva Santos Dummond!!!

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Reply #6 - Jun 26^th, 2011 at 4:57pm

Capt.Propwash Offline
Colonel
Let's get a little mud
on the tires!
KCHS, Charleston, SC, USA

Gender:
Posts: 1958

not fully knowing all the axis's and which way they run....

on the Osprey, you can fly it like a helo, or airplane by rotating the Z axis with Flaps command. Could you do the same or something similar on your aircraft?

The thoughts and expressions contained in the post above are solely my own, and not necessarily those of Simviation.com, its Moderators, its Staff, its Members, or other guests. They can not, are not, and will not be held liable for any thoughts, or expressions, or posts that I have made, or will make in the future.

Computer Specs:: Acer Aspire Laptop..Win7 Home Premium 64-bit (sp1), AMD Athlon II X2 P340 (Dual Core) [2.2 Ghz], ATI Mobility Radeon HD 4250 (256mb), 4GB DDR3......FS9.1(sp3) / FSX (sp2)..... Ultimate Terrain X, Ground Environment X, REX, FTX ORBX PNW-PFJ-NRM-CRM, OZx, Tongass Fjords, Misty Moorings

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Reply #7 - Jun 29^th, 2011 at 10:12pm

jgf Offline
Colonel
village idiot
Columbus OH

Posts: 91

From what I've read (I'm neither programmer nor designer), the problem with controlling a single engine in multi-engine aircraft stems from a timing problem in FS9. There is a gauge which corrects this, it is invisible so can be dropped anywhere on a panel. I don't know if this is what you seek, but the file is RCBse-10.zip: FS2004 Selection Correction gauge by Rob Barendregt.

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