Quartic polynomial guidance method for accurate vertical soft landing of VTOL carrier rocket substage landing phase

A quadratic polynomial, vertical take-off and landing technology, applied in the direction of the guidance device of space navigation aircraft, can solve the problem of low precision and achieve the effect of broad application prospects

Active Publication Date: 2018-12-18
黑龙江省工研院资产经营管理有限公司
View PDF5 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low precision of the vertical soft landing of the sub-stage of the existing vertical take-off and landing carrier rocket in the final stage of return and landing, and to provide a vertical take-off and landing vehicle with a vector rocket motor (which can swing in all directions) as the executive mechanism. The technical scheme adopted for the precise vertical soft landing quaternary polynomial guidance method in the landing stage of the launch vehicle sub-stage is as follows:

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
  • Quartic polynomial guidance method for accurate vertical soft landing of VTOL carrier rocket substage landing phase
  • Quartic polynomial guidance method for accurate vertical soft landing of VTOL carrier rocket substage landing phase
  • Quartic polynomial guidance method for accurate vertical soft landing of VTOL carrier rocket substage landing phase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A quaternary polynomial guidance method for precise vertical soft landing of the sub-stage of a vertical take-off and landing launch vehicle, such as figure 1 As shown, the method includes the following steps:

[0054] Step 1: The sub-stage of the vertical take-off and landing launch vehicle obtains the current position and velocity vector of the rocket through real-time measurement by the navigation system, and after descending to the altitude predetermined by the flight program over the landing field, the rocket vector engine (which can swing in all directions) is ignited;

[0055] Step 2: Establish the motion equation of the rocket sub-stage under the ground coordinate system with the preset landing point position of the target landing site as the origin;

[0056]Step 3: According to the position of the target landing point of the vertical soft landing and the current position and speed of the child, solve the acceleration command of the quartic polynomial guidance i...

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 brings forward a quartic polynomial guidance method for accurate vertical soft landing of VTOL carrier rocket substage landing phase, belonging to technical field of guidance and control. A fourth-order polynomial guidance method for accurate vertical soft landing of a substage landing section of a vertical take-off and landing carrier rocket belongs to the technical field of guidance and control. In this method, the vector rocket motor is used as the actuator, and the guidance commands of high precision vertical soft landing in the rocket landing phase are obtained by using thequartic polynomial method, which is based on the substage states output from the on-board navigation system and the preset landing point positions of the target landing field. The accurate vertical soft landing guidance method for VTOL carrier rocket substage landing section can realize the accurate vertical soft landing of rocket substage.

Description

technical field [0001] The invention relates to a quaternary polynomial guidance method for precise vertical soft landing of a sub-stage landing section of a vertical take-off and landing carrier rocket, and belongs to the technical field of guidance and control. Background technique [0002] The cost of the launch vehicle is mainly concentrated in the rocket body, engine and equipment on the rocket. The fuel quality cost of the rocket is relatively low. Since the launch vehicle in service in my country can only be used once, the rocket body is discarded after launch, which also leads to The current rocket launch costs remain high. Therefore, the development of vertical take-off and landing carrier rockets, the vertical recovery of carrier rocket sub-stages, and reuse after maintenance can greatly reduce the launch cost of carrier rockets. The final stage of recovery of the vertical take-off and landing launch vehicle sub-stage (that is, the vertical landing stage) needs to ...

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): B64G1/24
Inventor 韦常柱崔乃刚张亮浦甲伦关英姿
Owner 黑龙江省工研院资产经营管理有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap