Operating experience has shown the effectiveness of using the aircraft of this scheme on the AHR.
Two engines are mounted on the center section so that in case of failure of one of the engines, the effectiveness of the control surfaces provides sufficient controllability of the aircraft, and the power reserve of one engine is enough to continue the flight. This makes it possible to improve flight safety, in particular, to use the aircraft for the transport of passengers when re-equipped for the chemical processing of rice fields and forests.
Efficient airflow of the wing with propellers allows you to reduce takeoff speed and reduce takeoff distance.
The layout of the aircraft provides for the requirements of “passive safety” for the pilot in emergency situations due to the load-bearing frame of the cockpit made of composite materials, the installation of engines in front of the cockpit on the center section mounted on the pylon, the placement of fuel tanks in the center section under the cockpit, and the use of reliable fastening of four-point seat belts .
In this model of the aircraft, the power set of the fuselage structure will be changed, which allows the crew members to be more comfortable in the cockpit. The design of the rudder has been changed, weight compensators have been installed instead of horn aerodynamic compensation. The attachment points of the stabilizer to the tail boom and the tail booms themselves have been reinforced. The wing has new wingtips.
Civil multi-purpose aircraft “STOL” belongs to the class of light civil aircraft of the normal category of general aviation. When designing the aircraft, the requirements of the airworthiness standards AP-23 and FAR-23 were taken into account.
“STOL” is a 10-12 seat aircraft with a trapezoidal, monocoque wing, docking of both planes occurs in the center section pylon, 6-8 cylinder lycoing engine, spring type landing gear with freely orientable front pillar, separate braking of the left right drums.
