prettyugly the rudder is, now, undesirably in the 'prop' wash. so, there will be vectored thrust at the tail. the air intake opening is less-than ideally located. specifically, the opening should be located where the air will be less-disturbed; eg., at or forward-of the wing leading edge. the flared design of the intake is also less-than ideal. the cross-sectional area along its length and at the opening of the intake duct should be equal to (or greater than) the Effective swept area of the impeller. that is also the optimal exit area. ( exit duct diameter should, therefore, reduce over a distance of a about six inches.) if the model is Heavy --- which is how it Looks --- you should expect it to have a High stall speed. this makes the successful execution of gentle, low-speed test flights less likely.
We will see what happens in the test flight. I take all your observations seriously. However, at this point it is for testing and a bit of fun. It is a visual design of boredom I have larger projects waiting for parts and had this 70mm doing nothing, so why not.
Berbagi yang bagus tetap semangat
Terima kasih banyak.
the use of two below-the-wing intakes should be considered.
prettyugly the rudder is, now, undesirably in the 'prop' wash. so, there will be vectored thrust at the tail. the air intake opening is less-than ideally located. specifically, the opening should be located where the air will be less-disturbed; eg., at or forward-of the wing leading edge.
the flared design of the intake is also less-than ideal. the cross-sectional area along its length and at the opening of the intake duct should be equal to (or greater than) the Effective swept area of the impeller. that is also the optimal exit area. ( exit duct diameter should, therefore, reduce over a distance of a about six inches.)
if the model is Heavy --- which is how it Looks --- you should expect it to have a High stall speed. this makes the successful execution of gentle, low-speed test flights less likely.
We will see what happens in the test flight. I take all your observations seriously. However, at this point it is for testing and a bit of fun. It is a visual design of boredom I have larger projects waiting for parts and had this 70mm doing nothing, so why not.