Building the RV10 - Video 12 - Rudder & Rudder Trim Tab (June 2022)
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- čas přidán 23. 01. 2023
- Building the rudder and adding a trim tab.
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My name is Brett Myers and I live in Lubbock, TX. I'm a finance professor at Texas Tech University (with a background in Mechanical Engineering). I'm currently building a Van's RV10 in my garage. It's kind of like an airplane that you buy from Ikea, and I'm sure it will work just fine. Van's Aircraft is probably the largest provider of kit airplanes on the market.
I am not affiliated in any way with Van's Aircraft. I'm posting these videos primarily for my own documentation and enjoyment as well as a desire to keep my extended family in the loop with what I am doing. They are for entertainment purposes only and shouldn't be used as a source for building advice or tips. Again, I am a finance professor. I'm not sure I'd take finance advice from a finance professor, much less advice on how to build an airplane.
#rv10 #vansaircraft #rv10build #vansrv10 #buildrv10 #rvbuilder #vansrv #buildingairplane #vansairforce #experinmentalairplane #rvaircraft #rvairplane
vans rv10 build
Help is always helpful.
So much knowledge
I'll be able to help when Matt decides to build one. You're welcome.
Doing a great job with the videos. It's great that you're sharing so much detail as I'm waiting on my -10 emp kit hopefully arriving late summer. Would love to see in a future video the priming process you're doing as I'm considering the same paint. Keep up the great work!
I'll probably do a primer video this summer. I was frustrated with the fact that nobody seems to do them but it's actually not that bad... If you like tinkering with things, you will love building an airplane!
Doing a fantastic job. If I may make a suggestion, this will add to the cost but "a little spending up front saves more spending later". From a corrosion preventative stand point, prime any drilled holes and countersinks, seal mating services and primer and Alodine is your friend in the areas that will never see the light of day but I promise you water will find its way in. Sealing, priming and Alodine can also drastically slow the galvanic and filiform corrosion potential as well. For double flush rivets, a microshaver is used. Use the standard one and half times the river diameter rule to form a shop head, smash it down haha just don't crack the rivet then come back and hit them with a microshave. Keep up the great work.
That is good advice! I was thinking the same thing; I purchased an Alodine pen for countersunk holes that don't have any primer. I like it because it doesn't change the dimension of countersunk holes.
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Rudder trim isn't really needed in the RV-10. A yaw dampener on the autopilot is another option that can accomplish ball-centered trim in cruise and more. You're obviously (since you said so) aware that adding a trim tab/system will alter the flutter characteristics of the control surface in some manner, often in mysterious and unexpected ways.
My understanding is that the yaw damper isn’t the best option for the constant input that trim functionality requires. That said, the trim tab is something that bugs me. My implementation is different from most other builders in that (and among other things) the servo is a little farther out from the axis of rudder rotation since I’m placing the tab on the bottom. So the change to the moment of inertia will be more pronounced than those that put a trim tab higher on the rudder (which results in the servo being closer to the axis of rudder rotation). While I can easily take this trim tab off, I’m thinking of making a second rudder…
@@buildingthe10 Yeah, I hear ya. What I can tell you after flying a lot of RV-10s is that for constant input, a very small trim wedge affixed to the rudder to center the ball in cruise is a lightweight, simple, and common method (and you apply it after you fly it, only when needed). And that's really all that's needed. It's hardly noticeable and doesn't protrude past the trailing edge of the rudder, and has essentially zero impact on balance/weight/dynamics. I have flown several with yaw dampeners (not to replace the wedge, but to augment) and they work very well. That said, this is experimental aviation after all - and one of the great things we get to do is design and experiment!
Lol, apparently we are also free to change the rudder such that the vertical stabilizer can rip itself off of the plane!
Thinking off doing this on a Murphy Moose I’m building. Which trim component did you buy/use, was it Vans to match aileron and elev?
I used a Ray Allen trim motor, if that’s what you’re asking…. It has a different throw than some of the ones that came with the kit for elevators, I believe.
Ok thanks