Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hypersonic aircraft reentry guidance method under terminal time constraint

A time-constrained, hypersonic technology, applied in vehicle position/route/height control, instrumentation, non-electric variable control, etc., can solve problems that cannot meet terminal time constraints, achieve good engineering application prospects, easy method, and improve accuracy sexual effect

Active Publication Date: 2021-06-11
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hypersonic vehicle reentry guidance method under the terminal time constraint, aiming at the problem that the existing reentry guidance technology cannot meet the terminal time constraints of the coordinated attack mission, while ensuring the altitude, speed, and voyage to be flown. , heading angle and other conventional terminal constraints, further satisfying the terminal time constraints

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hypersonic aircraft reentry guidance method under terminal time constraint
  • Hypersonic aircraft reentry guidance method under terminal time constraint
  • Hypersonic aircraft reentry guidance method under terminal time constraint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] In order to better illustrate the purpose and advantages of the present invention, the content of the invention will be further described below in conjunction with an embodiment and corresponding drawings.

[0056] In order to verify the feasibility of the method, taking the reentry mission of CAV-H aircraft as an example, the reentry guidance method simulation under the terminal time constraint is carried out. The initial height of the aircraft is h 0 = 60km, the speed is v 0 =6400m / s, the longitude is θ 0 =0, the latitude is φ 0 = 0; the terminal height of the aircraft is h f = 30km, speed v f =2000m / s, the maximum direction angle deviation is Δψ f =5°; the longitude of the target point is θ T =59°, latitude is φ T = 30°; the expected re-entry terminal time is 1600s, and the maximum terminal time error allowed by the coordinated attack is Δt max = 1s.

[0057] Such as figure 1 As shown, the hypersonic vehicle reentry guidance method under the terminal time c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a hypersonic flight vehicle reentry guidance method under terminal time constraint, and mainly solves a terminal time constraint problem of cooperative attack tasks of multiple hypersonic flight vehicles. The implementation method comprises the following steps that a parameterized U-shaped direction angle deviation corridor is designed for controlling the course angle and the terminal time of an aircraft; a dynamical model with attack angle and heeling angle control profile compensation and a fourth-order Adams integral method are adopted to predict the terminal reentry time, and a time difference is obtained; and the time difference is eliminated by adjusting the boundary width coefficient of the U-shaped corridor on line so that the terminal reentry time control of the hypersonic aircraft is realized. According to the guidance method disclosed by the invention, the terminal time constraint can be well met through the transverse lateral heeling angle reversal logic under the condition that the tracking precision of longitudinal states such as height and speed is not influenced, and an effective solution is provided for the collaborative attack guidance problem of the hypersonic flight vehicle.

Description

technical field [0001] The invention relates to a re-entry guidance method, in particular to a hypersonic aircraft re-entry guidance method under terminal time constraints, and belongs to the field of aircraft guidance and control. Background technique [0002] Hypersonic reentry vehicles generally fly in the adjacent space at an altitude of 20 to 100 kilometers, and the reentry speed can reach Mach 20 or more. It has the characteristics of long range, fast speed, and strong maneuverability, and can be used for long-range rapid strikes. However, the development of long-range detection technology and the deployment of advanced defense systems have limited the penetration probability of hypersonic reentry vehicles to a certain extent, and affected its strategic deterrence. In order to increase the probability of defense penetration, an effective attack method must be adopted, and multi-aircraft coordinated attack is an effective way to improve the penetration capability. Due ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/10
CPCG05D1/107
Inventor 梁子璇崔平远朱圣英徐瑞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com