Embedded air inlet based on vortex excretion and aircraft using embedded air inlet

A technology of embedded air intake and aircraft, which is applied in the field of aircraft, can solve the problems of large outlet flow field distortion and low total pressure recovery coefficient, reduce flow field distortion, improve total pressure recovery coefficient, and have good engineering application prospects Effect

Inactive Publication Date: 2011-03-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low total pressure recovery coefficient and large outlet flow field distortion in the existing buried inlet, the present invention provides a high-performance buried inlet with high total pressure recovery coefficient and small outlet flow field distortion. Embedded air inlet and aircraft using the embedded air inlet

Method used

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  • Embedded air inlet based on vortex excretion and aircraft using embedded air inlet
  • Embedded air inlet based on vortex excretion and aircraft using embedded air inlet
  • Embedded air inlet based on vortex excretion and aircraft using embedded air inlet

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Embodiment Construction

[0015] see figure 1 As shown, the invention discloses a buried air intake based on vortex discharge and an aircraft equipped with the buried air intake.

[0016] The embedded air intake based on vortex drainage has an air intake 3 at the front end, an air outlet 6 at the rear end, and an inner channel 5 connecting the air intake 3 and the air outlet. The inner passage 5 is provided with a front lip guide surface 4 located above the air inlet 3 for guiding airflow, and a spoiler 7 placed on the front lip guide surface 4 . The spoilers 7 can be arranged symmetrically in several rows along the guide surface 4 of the front lip in sequence, and one or two spoilers 7 are placed in each row. The spoiler 7 can sweep part of the low-energy gas flowing in from the front out of the air inlet 3 through both sides of the wall surface of the inner channel 5 . Of course, in other embodiments of the present invention, the spoiler 7 may not be placed.

[0017] The wall surface of the inner ...

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Abstract

The invention provides an embedded air inlet based on vortex excretion and an aircraft using the embedded air inlet. The side wall of the inner path of the embedded air inlet is provided with a pair of air bleeding grooves, vortex generated by an inlet chamfered edge and boundary layer low-energy flow entrained by the vortex are discharged out of the inner path via the air bleeding grooves so as to avoid high pitot loss and distortion caused by vortex self and entrainment projectile body boundary layer while fully utilizing actinal surface vortex for air entrainment. Thus, in the invention, the total pressure restitution coefficient of the embedded air inlet is greatly improved and the outlet flow field distortion is lowered.

Description

technical field [0001] The invention relates to an embedded air intake, in particular to an embedded air intake based on vortex discharge used on an aircraft and an aircraft using the air intake. Background technique [0002] The buried air intake is a special air intake that buries the inlet into the fuselage or wing without any protruding parts. Such a design can effectively reduce the windward area of ​​the aircraft, reduce the windward resistance and the radar scattering cross-section area, thereby having better stealth performance. In addition to the above-mentioned advantages, because it is integrated with the missile body / fuselage, the circumferential size of the aircraft can be relatively reduced, which is beneficial to the placement, carrying and box-type launch of the aircraft. The above-mentioned many advantages make the buried air intake more and more concerned by researchers at home and abroad. [0003] However, it is precisely because the entrance of the buri...

Claims

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Application Information

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IPC IPC(8): F02C7/04
Inventor 孙姝程代姝谭慧俊张悦张启帆周唯阳童悦
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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