Servo motor for Rudders and Hydroplanes - RC Groups
Thread Tools
Nov 26, 2011, 04:28 AM
Registered User

Servo motor for Rudders and Hydroplanes

Hello to All,
I have joined the forum recently.
Actually I am building a UAV for my University project and stuck with rudder movement. I have question plz help me in calculations.
I want to choose a servo motor for control of rudders and hydroplanes. But i am unable to find the torque required to move the rudders to 15Degree in 1second. plz help me to find the torque so I can select the suitable servo motor.
urgent help plz.
Sign up now
to remove ads between posts
Nov 26, 2011, 01:48 PM
robe_uk's Avatar
you haven't stated the size of the control surfaces you wish to control so it would be hard to say what size of servo you would need, but at a guess any standard size high torque servo would do. Might be worth asking in the submarine section as they would have more users, this rov section is very slow.

Good luck
Nov 26, 2011, 02:50 PM
Registered User
Thanks Rob for your reply.
Actually I want to find the torque offered by the rudders or Hydroplanes at certain deflection angle to select the servo motor.
Is there any formula for that?
Dec 11, 2011, 03:06 AM
Sea Dragon-Lover
Umi_Ryuzuki's Avatar
Calculate the total force for the of the water at your maximum speed against the square inches of your rudder. Apply that force vector at the end of a lever equal to the length of your rudder behind the point of rotation. Calculate for torque....

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Heavy duty servo/motor for a 1/6 Monster truck? takevin Off-road Cars 13 Feb 24, 2017 01:32 AM
Found Brick, servo and motor for Stuka conversion ScottGridley Aircraft - Electric - Micro & Indoor Airplanes (FS/W) 0 Oct 20, 2011 09:36 PM
Alert New B25 with NO RUDDERS for 3 MONTHS !!! texbird Nitro Planes 10 Sep 13, 2011 09:30 PM
Question Offset rudders or not offset rudders... speedchaser Dock Talk 10 Dec 29, 2004 05:12 AM