L Edge
Master member
Since thrust vectoring(TV) has been re-introduced by Flite Test, I did this project together in it's past hayday.
12 years ago, the rage was TV nozzles and if you view it from a trig approach, you can always have a forward vector(called thrust) and a vertical component(called lift) and if pivotably, you can control the proportions. I used a F-22 years ago for all kinds of testing that had a CG spot on.
So the question was, Can I make a EDF STOL F-22(no landing gear) that I can control(no gyro or FC) that the pilot can fly? Short answer-yes
To rotate the EDF, used a servo glued to the F-22 and mounted to a 64mmEDF at centerline(located at CG ) and other side glued to the top segment of another servo arm to keep rotation smooth. Notice that I mounted the battery crosswise to give the plane better stability. Servo was plugged into rudder where I decided:
no rudder- all thrust is forward flight.
left rudder- partial thrust is directed forward and partial lift is directed upwards. Max angle is 45 degrees and gives 70 % of EDF thrust both for thrust and lift.
Hence the TVN acts like a STOL.
Right rudder gives thrust which is directed forward and negative lift downwards!!!!!!max angle is 45degrees. Works excellent when you have winds.
So now you have a new tool in which the rudder and throttle settings give you an infinite angle/speed to use as a STOL. I used the negative rudder for a high angle of attack when a good strong wind was present to get the plane forward as well as down and yet stable. This was the maiden flight. To improve stability, put the battery crosswise.
The first run the EDF was move up to 45 degrees and the second shot was at 30 degrees. Notice the difference in takeoff lengths. One other factor working with TVN's, once you can "feel" it, guarantee you you will never crash on landing due to stalling the wing. As long as the EDF is running, you will have forward thrust.
12 years ago, the rage was TV nozzles and if you view it from a trig approach, you can always have a forward vector(called thrust) and a vertical component(called lift) and if pivotably, you can control the proportions. I used a F-22 years ago for all kinds of testing that had a CG spot on.
So the question was, Can I make a EDF STOL F-22(no landing gear) that I can control(no gyro or FC) that the pilot can fly? Short answer-yes
To rotate the EDF, used a servo glued to the F-22 and mounted to a 64mmEDF at centerline(located at CG ) and other side glued to the top segment of another servo arm to keep rotation smooth. Notice that I mounted the battery crosswise to give the plane better stability. Servo was plugged into rudder where I decided:
no rudder- all thrust is forward flight.
left rudder- partial thrust is directed forward and partial lift is directed upwards. Max angle is 45 degrees and gives 70 % of EDF thrust both for thrust and lift.
Hence the TVN acts like a STOL.
Right rudder gives thrust which is directed forward and negative lift downwards!!!!!!max angle is 45degrees. Works excellent when you have winds.
So now you have a new tool in which the rudder and throttle settings give you an infinite angle/speed to use as a STOL. I used the negative rudder for a high angle of attack when a good strong wind was present to get the plane forward as well as down and yet stable. This was the maiden flight. To improve stability, put the battery crosswise.
The first run the EDF was move up to 45 degrees and the second shot was at 30 degrees. Notice the difference in takeoff lengths. One other factor working with TVN's, once you can "feel" it, guarantee you you will never crash on landing due to stalling the wing. As long as the EDF is running, you will have forward thrust.
