"Well this a little tricky since neither company puts lots of info on their web sites. First of all the Elbit and EMT Aladin look like similar motor and prop packages.  Elbit 1 has twice the span and takeoff weight compared to the EMT…"

"MH45 data here."

" A quick run of the TL54 shows that it is similar to the MH45. TL54 has more lift coefficient and a good L/D. MH45 has a somewhat lower L/D but also has a lower moment coefficient that may help. Best wishes on your project."

"Clarification needed here Viky. The rudder trim causes yaw relative to airflow which the dihedral will cause to create a roll. For a front motor mount (tractor configuration) you will want right thrust to yaw right. On a pusher configuration with…"

"Well it's usually easier to make some length and alignment measurements. Suspending the plane - not recomended: Hanging the plane and running up the motor can be unsafe depending on how much power your motor is putting out, and will not really…"

"Two solutions that will work. 1 Easy to do. Use a mixer to feed in rudder correction with throttle input. Only problem is that the torque is not linear with throttle stick position. 2 This is harder to do depending on how the motor is mounted. Shim…"

" Hi, Here is a source for pre-made Polyurethane envelopes and motors. I use the 1/3 oz motors on my 6 ft blimp. Look here "

"Hi Dr. B I have some experience in navigation and I think you may have two problems here. First I agree with Cyrus above you have to consider the gravity vector. An accelerometer really measures the specific force. That is, it measures the net force…"