Overall arrangement of large air freighter

Abstract

The invention belongs to a technology of airplane design and relates to an overall arrangement of a large air freighter. The overall arrangement of the large air freighter comprises a fuselage (1), a cockpit (2), wings (3), a retractable nose-wheel landing gear (4), an upturning cargo bay front door (5), an upturning cargo bay rear door (6), and two propulsion devices which are arranged at the rear part of the wings and at the two sides of the fuselage, wherein each propulsion device consists of an engine mounting plate (7) and a power mechanism, wherein each engine mounting plate (7) is provided with a power mechanism mounting hole, and each power mechanism is arranged in the corresponding power mechanism mounting hole; each power mechanism consists of a pitching guide ring (8), a yaw guide ring (9), a propfan engine (10), a pitching rotating shaft (11), a yaw rotating shaft (12) and a support rod (17). By adoption of the overall arrangement of the large air freighter, the cruise efficiency, the structural efficiency and the loading efficiency of the air freighter can be improved, the oil consumption rate is reduced, the empty weight coefficient is reduced, and the fuel load and the flying range are improved.

Description

technical field [0001] The invention belongs to the aircraft design technology and relates to a layout of a large cargo aircraft. Background technique [0002] Existing large-scale cargo aircraft, such as the Il-76 of Russia, the C17 of the United States, and the A400M of Airbus, are specially designed large-scale cargo aircraft. T-shaped tail layout, wing crane engine, rear fuselage with open door for loading and unloading cargo, multi-wheel and multi-pillar landing gear, the biggest feature of this type of aircraft is mature technology, can adapt to various complex conditions, and realize the air cargo task Therefore, the cargo aircraft converted from civilian passengers can only be used at military and civilian airports with better conditions. There are many deficiencies in the existing large cargo aircraft. First, the cruising efficiency is not high. Under the same loading conditions, the aircraft with no flying wing layout is more efficient; second, the structural effi...

AI Technical Summary

Problems solved by technology

[0002] Existing large-scale cargo aircraft, such as the Il-76 of Russia, the C17 of the United States, and the A400M of Airbus, are specially designed large-scale cargo aircraft. T-shaped tail layout, wing crane engine, rear fuselage with open door for loading and unloading cargo, multi-wheel and multi-pillar landing gear, the biggest feature of this type of aircraft is mature technology, can adapt to various complex conditions, and realize the air cargo task , the cargo aircraft converted from civilian passengers can only be used in military and civilian airports with better conditions

There are many deficiencies in the existing large cargo aircraft. First, the cruising efficiency is not high. Under the same loading conditions, the aircraft without flying wing layout is more efficient. Second, the structural efficiency is low, resulting in a large empty weight coefficient, which also affects the fuel capacity. third, the turbofan engine is used, and the fuel consumption rate is high; fourth, because the rear fuselage adopts a T-shaped tail layout and a large hatch, the design strength of the rear fuselage is often very high, and the rigidity is relatively high, resulting in air pollution. Large machine weight factor

Fifth, the existing cargo aircraft adopt the rear fuselage to open the large hatch, the loading efficiency is low, time-consuming and labor-intensive, and there is nothing that can be done for super-long pieces, which limits the scope of use of this aircraft

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