Development of a Modular, Generic Helicopter Flight Dynamics Model for Real-Time Simulation

2007 ◽  
Author(s):  
Wim Van Hoydonck ◽  
Marilena Pavel
Keyword(s):  
Real Time ◽  
Flight Dynamics ◽  
Dynamics Model ◽  
Real Time Simulation ◽  
Helicopter Flight ◽  
Time Simulation ◽  
Flight Dynamics Model

scholarly journals Investigation on effects of time-frequency characteristics of ship airwake on helicopter flight characteristics

2021 ◽  
Vol 39 (5) ◽  
pp. 1087-1096
Author(s):  
Jinghui DENG
Keyword(s):  
Flight Dynamics ◽  
Critical Factors ◽  
Dynamics Model ◽  
Time Frequency ◽  
Helicopter Flight ◽  
Unsteady Loading ◽  
Flight Dynamics Model ◽  
The One ◽  
Yaw Moment ◽  
Spatial And Temporal Characteristics

A conventional helicopter flight dynamics model, which can be coupled with ship airwake date, is developed in this study. In the method, the ship airwake data is obtained by the high-accuracy DES model, and a strategy which can transmit CFD data to the flight dynamics model is established based on the "one-way" coupling idea. Then, the SFS2 ship model and UH-60A helicopter are chosen as a combination to investigate the influences of the spatial and temporal characteristics of ship airwake from the aspects of control margins and unsteady level. The time-averaged simulation results show that for the counterclockwise-rotor helicopter, although pilot could have more collective pitch margin under crosswind condition compared to the headwind condition, he might possess much less pedal margin due to the sidewash in the airflow. The unsteady results indicate that the unsteady loading level of the helicopter would increase significantly under the crosswind condition compared to the headwind condition due to the increase of turbulent density in the airwake. Furthermore, for the conventional helicopter, the disturbances on the forces and moments which along the rotor hub (i.e., thrust and yaw moment) are the critical factors that increasing the pilot workload during the landing procedure.

A Dynamics Model of Rotor Blades for Real-time Simulation of Helicopters

2007 ◽  
Vol 14A (5) ◽  
pp. 255-262
Author(s):  
Su-Wan Park ◽  
Kwan-Woo Ryu ◽  
Eun-Ju Kim ◽  
Nak-Hoon Baek
Keyword(s):  
Real Time ◽  
Rotor Blades ◽  
Dynamics Model ◽  
Real Time Simulation ◽  
Time Simulation

Real-Time Simulation Study of Dynamics for Electric Drive Tracked Vehicle Based on Vortex

2012 ◽  
Vol 263-266 ◽  
pp. 595-599
Author(s):  
Bing Li ◽  
Jianhua Zheng ◽  
Yang Hui Zhou ◽  
Li Xi Luo
Keyword(s):  
Real Time ◽  
Electric Drive ◽  
Vehicle Dynamics ◽  
High Accuracy ◽  
Vehicle Dynamic ◽  
Dynamics Model ◽  
Tracked Vehicle ◽  
Real Time Simulation ◽  
Time Simulation ◽  
Vehicle Dynamic Simulation

Aiming at the problem of real-time simulation of vehicle dynamics. Dynamic model of tracked vehicle was built in Vortex. Base class of vehicle was secondary developed to apply torque to the sprockets directly. Finally, dynamics model of electric drive tracked vehicle was established. Under different conditions，the dynamics real-time simulation was carried out. The results showed that the vehicle dynamic simulation in Vortex ensures high accuracy and also has a good real-time.

scholarly journals Parameterized Model of Flight Dynamics of the Transport Helicopter

2020 ◽  
Vol 50 (3) ◽  
pp. 237-256
Author(s):  
Piotr Golański ◽  
Marek Szczekala ◽  
Jerzy Manerowski ◽  
Michał Roguszewski
Keyword(s):  
Mixed Reality ◽  
Flight Dynamics ◽  
Flight Test ◽  
Real Object ◽  
Test Results ◽  
Dynamics Model ◽  
Test Characteristics ◽  
Helicopter Flight ◽  
Parameterized Model ◽  
Flight Dynamics Model

AbstractThe article addresses investigating the possibilities of making a parameterized flight dynamics model in a mixed reality environment. The purpose was to obtain a model for a Mi-17 helicopter. The Mi-17 VI helicopter flight test characteristics were used to evaluate the above model. As a comparative criterion, compatibility between the model’s selected characteristics and the real object was adopted. Simulation tests were conducted on a cabin simulator set made via MR (mixed reality) technology. Test results confirmed the possibility of reconstructing the selected helicopter type’s flight dynamics using the parameterized model.

The validation of a semi-recursive vehicle dynamics model for a real-time simulation

2020 ◽  
Vol 151 ◽  
pp. 103907 ◽  
Author(s):  
Yongjun Pan ◽  
Saidi Xiang ◽  
Yansong He ◽  
Jian Zhao ◽  
Aki Mikkola
Keyword(s):  
Real Time ◽  
Vehicle Dynamics ◽  
Dynamics Model ◽  
Real Time Simulation ◽  
Time Simulation

Towards real-time pilot-in-the-loop CFD simulations of helicopter/ship dynamic interface

2017 ◽  
Vol 08 (04) ◽  
pp. 1743005 ◽  
Author(s):  
Ilker Oruc ◽  
Joseph F. Horn ◽  
Jeremy Shipman ◽  
Susan Polsky
Keyword(s):  
Real Time ◽  
Flight Dynamics ◽  
Ground Effect ◽  
Dynamics Simulation ◽  
Computational Domain ◽  
Dynamics Model ◽  
Disk Model ◽  
Performance Improvements ◽  
Dynamic Interface ◽  
Flight Dynamics Model

This study presents the development of computationally efficient coupling of Navier–Stokes Computational Fluid Dynamics (CFD) with a helicopter flight dynamics model with the ultimate goal of real-time simulation of airwake effects in the helicopter/ship Dynamic Interface (DI). The flight dynamics model is free to move within a computational domain, where the main rotor forces are converted to source terms in the momentum equations of the CFD solution using an actuator disk model. Simultaneously, the CFD solver calculates induced velocities that are fed back to the simulation and affect the aerodynamic loads in the flight dynamics. The CFD solver models the inflow, ground effect and interactional aerodynamics in the flight dynamics simulation, and these calculations can be coupled with the solution of the external flow (e.g., ship airwake effects). The simulation framework for fully-coupled pilot-in-the-loop (PIL) flight dynamics/CFD is demonstrated for a simplified shedding wake. Initial tests were performed with 0.38 million structured grid cells running on 352 processors and showed near-real-time performance. Improvements to the coupling interface are described that allow the simulation run at near-real-time execution speeds on currently available computing platforms. Improvements in computing hardware are expected to allow real-time simulations.

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