Unlock instant, AI-driven research and patent intelligence for your innovation.
Helicopter flight dynamics simulation method and system
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of helicopter and mechanics, which is applied in the field of flight mechanics simulation, can solve the problems of poor calculation accuracy of the flight mechanics model, and achieve the effect of improving the calculation accuracy
Active Publication Date: 2018-05-29
BEIJING ZHZ TECH
View PDF7 Cites 12 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] The purpose of this application is to propose a helicopter flight mechanics simulation method, which is used to solve the technical problem of poor calculation accuracy of the existing helicopter flight mechanics model
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] figure 1 It is a flow chart of the helicopter flight mechanics simulation method of the present application, such as figure 1 As shown, the helicopter flight mechanics simulation method of the present application includes:
[0026] Perform data preprocessing (100) on the main rotor, tail rotor, fuselage, horizontal tail, and vertical tail; calculate the aerodynamic forces of the main rotor, tail rotor, fuselage, horizontal tail, and vertical tail, the speed, angular velocity, and next time of the helicopter The step position, attitude (200); output calculation result (300).
[0027] Specifically, the methods of data pre-processing include:
[0028] Establish a three-dimensional geometric model of the helicopter (110); perform grid division on the main rotor, tail rotor, fuselage, horizontal tail and vertical tail to obtain grid cells (120); use CFD (Computational Fluid Dynamics, computational fluid dynamics) method to trim Initial moment attitude and steering paramet...
Embodiment 2
[0052] The present application also proposes a helicopter flight mechanics simulation system, which is applicable to the helicopter flight mechanics simulation method described in the first embodiment. figure 2 It is a structural schematic diagram of the helicopter flight mechanics simulation system of the present application, including:
[0053] The pre-processing module 21 is used for carrying out data pre-processing to the main rotor, tail rotor, fuselage, horizontal tail and vertical tail;
[0054] Calculation module 22, is used for calculating the aerodynamic force of main rotor, tail rotor, fuselage, horizontal tail, vertical tail, the speed of helicopter, angular velocity, and step position, attitude of next time;
[0055] An output module 23, configured to output calculation results.
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
Login to View More
Abstract
The invention discloses a helicopter flight dynamicssimulation method and system, relates to the technical field of flight dynamicssimulation and solves the technical problem of poor calculation accuracy of an existing helicopter flight dynamics model. The simulation method includes the steps: pre-processing data of a main rotor, a tail rotor, a body, a horizontal tail and a vertical fin; calculating aerodynamic force of the main rotor, the tail rotor, the body, the horizontal tail and the vertical fin, the speed and the angular speed of a helicopter and the step position and posture of a next time; outputting calculation results. The method and the system are mainly used for helicopter flight design.
Description
technical field [0001] The present application relates to the technical field of flight mechanics simulation, in particular to a helicopter flight mechanics simulation method and system. Background technique [0002] Helicopter flight mechanics modeling is an important task in the design and development stages of helicopters. It can provide load input for various flight state strength check calculations such as helicopter hovering, forward flight, hovering to forward flight, forward flight to hovering, landing, vertical maneuvering, acceleration and deceleration; used to develop helicopter maneuverability, stability It is used for the simulation calculation of each task unit for flight quality assessment; it is used to assist in the completion of flight control procedures, etc. Accurate helicopter flight dynamics models can greatly shorten the helicopter design and development cycle, and reduce design and development costs. [0003] At present, the method of helicopter fli...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More