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Double waverider splicing air suction type hypersonic aircraft forebody and design method thereof

A waverider and aircraft technology, applied in the field of hypersonic aircraft design, can solve problems such as the difficulty of aircraft precursor design, and achieve the effect of improving utilization

Active Publication Date: 2013-04-10
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These coupled design requirements and performance index requirements have brought great difficulty to the design of the aircraft precursor

Method used

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  • Double waverider splicing air suction type hypersonic aircraft forebody and design method thereof
  • Double waverider splicing air suction type hypersonic aircraft forebody and design method thereof
  • Double waverider splicing air suction type hypersonic aircraft forebody and design method thereof

Examples

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Effect test

example 1

[0033] Example 1: A design example suitable for the air intake layout of the nose, such as figure 2 shown.

example 2

[0034] Example 2: A design example suitable for the air intake layout on both sides, such as image 3 shown.

example 3

[0035] Example 3: Design example suitable for flank air intake layout, such as Figure 4 shown.

[0036] actual effect test

[0037] The performance of the designed precursor of the present invention is checked below through an example design and corresponding numerical analysis. An actual precursor shape designed based on the aforementioned design method is as follows: Figure 5 As shown, its three views and outline dimensions are as follows Figure 6 shown.

[0038] Using numerical simulation technology, the calculated aerodynamic performance parameters are shown in Table 1. It can be seen from the calculation results that due to the use of the double waveriders designed in the present invention to fight against the precursor, a high incoming flow capture capacity can be obtained to meet the flow design requirements. In addition, due to the high lift-to-drag ratio of the waverider, the double waverider split-type precursor also has a high lift-to-drag ratio.

[0039] T...

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Abstract

The invention discloses a double waverider splicing air suction type hypersonic aircraft forebody and a design method thereof. The double waverider splicing air suction type hypersonic aircraft forebody comprises a left waverider, a right waverider, a splicing surface and an upper wall surface, wherein the left waverider and the right waverider are symmetrically arranged at preset intervals; the splicing surface is formed between the lower front edge lines of the left waverider and the right waverider; the splicing surface is used for seaming the gap between the lower front edge lines of the left waverider and the right waverider and serves as a lifting surface of the forebody to provide addition lifting force; the upper wall surface is formed between the front edge line of the splicing surface and the upper front edge lines of the left waverider and the right waverider; and the upper wall surface is used for seaming the gap between the upper front edge lines of the left waverider and the right waverider. The double waverider structure is formed, and the splicing surface and the upper wall surface for reasonably seaming the gap between the lower front edge lines of the left waverider and the right waverider and capable of improving the pneumatic / volume comprehensive performance of the aircraft are formed between the double waveriders, so that utilization of abdominal space of the aircraft can be improved well.

Description

technical field [0001] The invention relates to the design of a hypersonic aircraft powered by an air-breathing scramjet, and in particular to the aircraft precursor and its aerodynamic shape design with different aerodynamic layout requirements. Background technique [0002] A hypersonic vehicle refers to an aircraft that flies in the atmosphere at a speed higher than five times the speed of sound. It has broad application prospects and is also one of the commanding heights, difficulties and focuses of competition in the international aerospace field. Judging from the current domestic and foreign status quo, research on hyper-vehicles powered by air-breathing scramjet engines has become the main direction of research in this field (such as X-43A, X-51A in the United States, etc.). When the aircraft flies at hypersonic speed, the wave resistance and frictional resistance increase sharply, which leads to the increase of aerodynamic resistance and the decrease of engine thrus...

Claims

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Application Information

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IPC IPC(8): B64C21/00
Inventor 崔凯胡守超李广利屈志朋
Owner INST OF MECHANICS - CHINESE ACAD OF SCI