How do I convert control throw measured in inches to degrees
01-24-2004, 12:59 PM
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How do I convert control throw measured in inches to degrees
Hi all,
In Real Flight G2, all control throws are measured in Degrees while the control throws on the four ARF's that I have built were all measured in inches.
If I wish to convert my plane control throw (measured in inches to) degrees throw for use in Real Flight, is there a conversion chart or formula that can be used?
Are control throws usually measured in degrees?
In Real Flight G2, all control throws are measured in Degrees while the control throws on the four ARF's that I have built were all measured in inches.
If I wish to convert my plane control throw (measured in inches to) degrees throw for use in Real Flight, is there a conversion chart or formula that can be used?
Are control throws usually measured in degrees?
01-24-2004, 01:12 PM
#2
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RE: How do I convert control throw measured in inches to degrees
Quoting Euclid...circa 1000 BC..
You got your "side adjacent"... that's the length of the surface from the hinge line to the trailing edge..
You got your "side opposite"... that's the distance the trailing edge moves up (or down)..
You divide the opposite dimension by the adjacent dimention.
That's your "tangent".
Look that number up in a book of tables.. or hit -shift- tan on your calcomulator..
That's the angle.
Full-scales use degrees.. the surfaces are usually too large for reliable tape measurements. Inclinometers are easier to read.
You got your "side adjacent"... that's the length of the surface from the hinge line to the trailing edge..
You got your "side opposite"... that's the distance the trailing edge moves up (or down)..
You divide the opposite dimension by the adjacent dimention.
That's your "tangent".
Look that number up in a book of tables.. or hit -shift- tan on your calcomulator..
That's the angle.
Full-scales use degrees.. the surfaces are usually too large for reliable tape measurements. Inclinometers are easier to read.
01-24-2004, 02:19 PM
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RE: How do I convert control throw measured in inches to degrees
Thanks Tall Paul,
That is what I was looking for. Please help me with one other measurement. When I set up the 1-1/4 inch throw on the rudder of my plane, the rudder is 2 inches from the hinge to the trailing edge at the top and 4 inches from the hinge to the trailing edge at the bottom. Do I measure the 1-1/4 inch throw at the bottom of the rudder? If I understand your answer quoting Euclid, this would be the "length of the surface from the hinge line to the trailing edge"...
Thanks again,
That is what I was looking for. Please help me with one other measurement. When I set up the 1-1/4 inch throw on the rudder of my plane, the rudder is 2 inches from the hinge to the trailing edge at the top and 4 inches from the hinge to the trailing edge at the bottom. Do I measure the 1-1/4 inch throw at the bottom of the rudder? If I understand your answer quoting Euclid, this would be the "length of the surface from the hinge line to the trailing edge"...
Thanks again,
01-24-2004, 02:23 PM
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RE: How do I convert control throw measured in inches to degrees
Mount the airtraft firmly in a level attitude.
get a kids grade school protractor. (that angle measuring thingy from 3rd grade math)
Put a piece of music wire in it throught the little pencil hole (Z bend)
Hold that against the aileron and read of the angles as you move the transmitter stick.
You now have your control throw angles. (might have to add and subtract the differences from center to full throws... but if you can't do that...
)
Now... you can EASILY make the protractor clip onto the control surface and make the process easier. There is a company that sells one pre made for about $30. (costs about $2 and 10 min to make it)
get a kids grade school protractor. (that angle measuring thingy from 3rd grade math)
Put a piece of music wire in it throught the little pencil hole (Z bend)
Hold that against the aileron and read of the angles as you move the transmitter stick.
You now have your control throw angles. (might have to add and subtract the differences from center to full throws... but if you can't do that...
)Now... you can EASILY make the protractor clip onto the control surface and make the process easier. There is a company that sells one pre made for about $30. (costs about $2 and 10 min to make it)
