beneditoangelo
Member
Can someone help me? I need to know RV 12 travel in degree of stabilator , flaperons and rudder. Thanks in advance.
Benedito Angelo
Benedito Angelo
Van's Aircraft REFUSES to release this information!
How in the world is a builder supposed to know that the airplane was rigged properly? I mean yeah I know that these kits 12 are incredibly complete, but I think checking control surface deflections should be a very basic part of making sure that everything came together properly in the end.
Since an ELSA has to be built EXACTLY to the specs of the SLSA and Van's provides all of the parts, holes and directions to do so, wouldn't you be more concerned with following the directions?
So, what's the problem with giving inspectors these deflections as an additional check? We know how to measure stabilator deflection. We do it every day on other aircraft.
As an aside; I have failed at least 2 S-LSA aircraft that did not meet their specs. These aircraft had been completed and test flown in Italy before being shipped to the U.S. They had been through the factory QA, yet they did not meet spec.
My problem is not with the way you do it, but I find it somewhat disturbing that you will not allow me to make an additional check for my own satisfaction.
My airplane is 56 years old. Without this sort of information how would anyone be able to ascertain that the aircraft is airworthy?
The information on control deflections is essential to verify that the aircraft still meets its requirements.
Can someone help me? I need to know RV 12 travel in degree of stabilator , flaperons and rudder. Thanks in advance.
Benedito Angelo
Gentlemen,
Please read the posts by the builder that started this thread. He is in Brazil.
In some countries, when you start building or before, you need to ask
for an "authorization" to build. You need to submit to the civil aviation
agencies all the data of the aircraft model you wanna build. Stuff like
wing area, control surface areas and so. Control surface deflection angles
is a vital parameter that you must provide, they will request it.
Now try to explain to some aviation official that?s the way Van?s does it now. Yes, the deflection angles will be correct when the plane is finished
if you do it right, but, they want to know now what these angles should be.
Can be frustrating to this fellow builder.
In the UK, my inspector also expected some control angle ranges to measure against, and some symmetry measurements. In the end we just measured them "for posterity".
Flaperons - up
Port up 21 degrees
Port down 13 degrees
Starboard up 24 degrees
Starboard down 12 degrees
Flaperons 1st stage down, droop 22 degrees
Port up 19 degrees
Port down 12 degrees
Starboard up 19 degrees
Starboard down 12 degrees
Flaperons 2nd sgae down, droop 32 degrees
Port up 18 degrees
Port down 11 degrees
Starboard up 18 degrees
Starboard down 11 degrees
Elevator
Up 17 degrees
Down 4 degrees
Elevator trimmer
Up 21 degrees
Down 32 degrees
Similarly, we measured airframe symmetry as follows:
Wing - rear wing tip to base of fin
Port 5000mm
Starboard 4995mm
Fin, top of spar to tail plan spar tips
Port 1705mm
Starboard 1705mm
Tailplane, tip of spar to centre of canopy handle
Port 3640mm
Starboard 3635mm
Undercarriage, main wheel to wing leading edge
Port 597mm
Starboard 603mm
Biggest difference was 6mm, that's a quarter of an inch!
Not saying this is right, wrong, or indifferent. Just what was measured.
Cheers...Keith
Elevator
Up 17 degrees
Down 4 degrees
Would it be safe to assume this was intended to state 14 degrees down for the elevator?
How do you find where the stab will be for level flight?
Only then can you assign up/down degrees, no?
Best,
How do you find where the stab will be for level flight?
Only then can you assign up/down degrees, no?
Best,