How to Flight Trim an RC Airplane

How to Flight Trim an RC Model Airplane In this video I will show you how to flight trim a radio control (RC) model airplane. Trimming any airplane in flight, full scale, RC model or free flight, is a basic skill of any pilot. An airplane that is aerodynamically trimmed can maintain a constant altitude or airspeed without any control forces being present. All airplanes need to be trimmed for normal flight. An aircraft has three axes of flight: Pitch axis, controlled by elevator. Roll axis controlled by ailerons. Yaw axis controlled by rudder. The roll and yaw axes for light aircraft ofter can be set on the ground. The pitch axis must be trimmed during each flight to account for airspeed, center of gravity location and configuration changes. Our RC models have a built in electronic trim function that is easy to set during flight. As trim is set for an airspeed, the pilot must choose an airspeed to trim for. In this video, I select straight and level flight at 2/3 throttle setting. Once the radio control model is trimmed at this airspeed, the pilot should be able to take their hands off of the controls with minimal movement of the airplane. I also discuss the use of sub-trims on the RC transmitter, and the ability of the RC transmitter to retain all trim settings in the computer memory. Here is a link to my YouTube Channel:    / timmckay56   Many thanks in advance for a post of this video on Facebook, it truly helps the channel a lot! Regards, Tim F-22 video and plans:    • F-22 Foam Board RC Airplane   Chapters 00:00 - Intro 00:12 - How to trim and RC model airplane 00:58 - Three axes of flight 02:28 - Why we trim 03:45 - Why we trim 04:35 - Full scale trimming 08:48 - Center of gravity 10:15 - RC trim basics 13:04 - Trimming your RC model 17:40 - Sub-trims 19:53 - Transmitter memory and trims 21:05 - Difficult trim