a propeller plane

Abstract

The invention relates to the technical field of aerodynamic layout of a twin-engine propeller aircraft, in particular to a propeller aircraft. It includes: two engine nacelles (1), two main landing gear compartments (7) and two main landing gears (8). The wing (2) adopts an upper monoplane layout, which increases the ground clearance of the propeller tip and facilitates the arrangement of the engine nacelle (1). The environmental control liquid cooling inlet (4) is the combination of the environmental control liquid cooling and the engine lubricating oil air inlet into one, so as to improve the aerodynamic efficiency. The main landing gear compartments (7) are respectively arranged at the lower ends of the two engine nacelles (1), which solves the difficulty in storing the main landing gear (8) and the loss of the structural strength of the fuselage caused by the large occupation of space. The deflection nozzle (9) rear portion that is installed in the propeller engine (5) afterbody deflects 5 ° to 20 ° downwards along the axis, effectively avoiding the jet flow of the engine from hitting the flap (10). The structure of the invention has good bearing characteristics, light weight and good overall rigidity characteristics.

Description

technical field [0001] The invention relates to the technical field of aerodynamic layout of a twin-engine propeller aircraft, in particular to a propeller aircraft. Background technique [0002] The aircraft is powered by one or more propulsion units, the propulsion units include turbojet or turboprop engines housed in nacelles, each propulsion unit is connected to the aircraft through a pylon, and the nacelles are installed on the wings. Although aviation propulsion has already entered the jet age, the turboprop engine has the characteristics of high pulling force, high propulsion efficiency and good economy when flying at low subsonic speed, so it still plays an important role in the field of aircraft, especially the field of transport aircraft. As a key component of the aircraft, the engine nacelle is one of the key contents of layout research. [0003] The ground clearance of the propeller tip of the low-wing aircraft is insufficient; if the aircraft is environmentally...

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