The passing of the A29 Tucano in the USA
Choosing a flying farm tractor to replace the choice of the Tucano A29 air dancer is like putting a truck to race between formula one cars, No, it wasn't slutty, it was lobbying.
It turns out that the flight envelope of an agricultural plane is the opposite of the Tucano trainer, I can't even imagine how a USAF aeronautical expert can explain the aerodynamic profile of the wings of a sprayer that flies all the time less than 100m from the ground manages to have a reasonable performance at 2000 meters where the atmospheric pressure already drops about 60% producing an aerodynamic hyper lift and consequently an aerodynamic drag destabilizing the aircraft causing the moving surfaces to be extremely dimensioned making the flight very difficult to control since it was not designed to fly at cruising altitudes for a long time, the aerodynamics are not even refined and the flight envelope is extremely limited to only being restricted to ascending, descending quickly and making long turns at low altitude.
So, it's a joke that Embraer will be delighted when the homologation tests start, someone will have to explain a lot to the US Congress.
The choice of Embraer's C390 for an aerial refueler was a consequence of the serious aerial refueling test accident of a Stealth F35B naval vertical takeoff model aircraft whose airfoil was designed to be smaller due to the vertical takeoff and landing thrust vectors. , almost stopped, then to reduce to speeds compatible with the Hercules C130 turbo propeller fueler that flies 300 km per hour slower than the F35 that lost lift and was swallowed by the strong turbulence of the two sources of propulsion of the propellers on the side of the basket of aerial refueling, so the emergency solution is for the plane that is already ready and prepared to do the refueling at a speed compatible with a jet, which is the modern jet freighter the Embraer C390.
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