The pitch trim explanation for higher speeds doesn't really make sense. At all speeds, for level flight, the same amount of total lift is required (wing plus horizontal stabiliser plus body lift plus propeller thrust vertical component, but we often ignore the latter two). Both the downforce of the horizontal stabiliser and the main wing lift increase with the square of the speed. To reduce lift, then, the angle of attack on the main wing has to be reduced, thus the aircraft has to be trimmed nose-down. For that the trim tab has to go up, forcing the elevator trailing edge down, reducing the downforce of the stabiliser.
Next up: Jimbo gives advice on trimming... Of beards. :-)
Good to know thx Jimbo
and thanks Red Bull Air Race for coming to San Diego
The pitch trim explanation for higher speeds doesn't really make sense. At all speeds, for level flight, the same amount of total lift is required (wing plus horizontal stabiliser plus body lift plus propeller thrust vertical component, but we often ignore the latter two).
Both the downforce of the horizontal stabiliser and the main wing lift increase with the square of the speed. To reduce lift, then, the angle of attack on the main wing has to be reduced, thus the aircraft has to be trimmed nose-down. For that the trim tab has to go up, forcing the elevator trailing edge down, reducing the downforce of the stabiliser.
Welp, my left audio decoder is working extra hard now decoding the audio channel of this video.
I thought my earphones were broken.. Nice troll Red Bull, nice one
Audio is only on left speaker... :'(
A switch controlled trim tab? Hmm, is that to be lighter opposed to wheel controlled trim tabs?
He has almost the same voice as Viper!
Very informative.
beard of knwlge