A Continuous Bleed Air System Based on Turbojet Engine

Abstract

The invention discloses a continuous bleed air system based on a turbojet engine. The bleed air system at least includes a gas collecting ring, and the gas collecting ring is sleeved on the outside of the pressure stabilizing section of the turbojet engine, and the pressure stabilizing section A number of air-introduction windows are uniformly arranged on the side wall between the gas-collecting ring; two air-introducing units for leading out compressed gas are arranged on the gas-collecting ring, and the air-introducing units include The bleed air pipe on the side wall of the gas collecting ring, the bleed air mass flow measuring equipment and the bleed air mass flow control equipment arranged in the bleed air pipe. In the present invention, by modifying the engine pressure stabilizing section, adding gas collecting rings, temperature and pressure sensors, mass flow measurement and control equipment, and engine exhaust temperature detection equipment, on the premise of ensuring the safe working state of the engine, it continuously provides controllable compressed gas. The bleed air system is small in size, low in cost, does not need an additional power device, and is convenient to be integrated inside the aircraft.

Description

technical field [0001] The invention belongs to the field of circulation control, and relates to a bleed air system for continuously providing compressed gas, in particular to a continuous bleed air system based on a turbojet engine. Background technique [0002] STOL performance, high maneuverability and stealth are increasingly being valued in new aircraft designs. In order to improve the take-off and landing performance and maneuvering control of the aircraft, higher lift, control force and moment are required, so traditional mechanical movable airfoils such as flaps / slats and control surfaces are widely used. The extensive use of these movable surfaces has also brought about a series of problems, such as the increase in noise and maintenance costs, the design difficulty and weight increase caused by the complex and heavy mechanical control system, and the reduction in stealth performance. In order to further improve the performance of new aircraft , the demand for solut...

AI Technical Summary

Problems solved by technology

[0005] The most widely used is the high-pressure gas tank, but the installation of the high-pressure gas tank on the aircraft will also increase the weight of the aircraft itself and occupy the space inside the aircraft; the method of modifying the engine as a source of compressed air has also been partially adopted, but the current modification of the engine is mainly For the compressor section, it is often necessary to redesign the engine at this time, which is technically difficult, long-term, and expensive, and requires a large number of participants

Images