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Thrust angles: designed in or programmed?

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Thrust angles: designed in or programmed?

Old 02-20-2002, 04:08 AM
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rcman-RCU
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Default Thrust angles: designed in or programmed?

Is it better to build in right thrust and up/down thrust or wouldn't it be just as effective to just program it in? Both rudder and elevator could be programmed to the throttle channel. Has anyone used the programming method? Most of the newer transmitters have enough programmable mixes to handle this.
Old 02-20-2002, 06:02 AM
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Mike James
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Default Trim

Hmmm...

I'd like to hear the responses to this myself.

Personally, I would never do it, because trimming an aerobatic plane has plenty of parameters already. What I do is build my plugs and molds with the spinner ring right on 0/0 degrees, which gives the builder a valid reference.

If offset thrust ends up being used, t's easy enough later to (for cosmetics only) come back and add a bit of epoxy and microballoons to the nosering, to match the spinner backplate.

What do the rest of you guys do?
Old 02-20-2002, 12:07 PM
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Ollie
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Default Programing Torque Compensation

It can be done but the results won't be exactly equivalent. The programmed in control responses will be proportional to the square of the airspeed but the thrust off set effects are proportional to the square of the RPM. In a full throttle climb the airspeed will be quite a bit lower than level flight at the same RPM, for example.

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