Specific features of the aerodynamic moment and the pitch damping of a re-entry vehicle model exercising free oscillations at supersonic speeds

2020 ◽  
Vol 27 (3) ◽  
pp. 331-338
Author(s):  
E. A. Chasovnikov
Keyword(s):  
Free Oscillations ◽  
Vehicle Model ◽  
Aerodynamic Moment ◽  
Pitch Damping

Free oscillations of the sun and the giant planets

1981 ◽  
Vol 134 (8) ◽  
pp. 675 ◽  
Author(s):  
S.V. Vorontsov ◽  
V.N. Zharkov
Keyword(s):  
Giant Planets ◽  
The Sun ◽  
Free Oscillations

Anti-Windup Control for an Air-Breathing Hypersonic Vehicle Model

2005 ◽  
Author(s):  
Kevin P. Groves ◽  
Andrea Serrani ◽  
Stephen Yurkovich ◽  
Michael A. Bolender ◽  
David B. Doman
Keyword(s):  
Hypersonic Vehicle ◽  
Vehicle Model ◽  
Air Breathing

scholarly journals Empirical Study of Car Crash Simulation Analysis within the Development Phase

2019 ◽  
Vol 1 (1) ◽  
pp. 2843-2852 ◽  
Author(s):  
Naouress Fatfouta ◽  
Julie Stal-Le Cardinal ◽  
Christine Royer
Keyword(s):  
Empirical Study ◽  
Qualitative Analysis ◽  
Simulation Analysis ◽  
Development Phase ◽  
Vehicle Model ◽  
Crash Simulation ◽  
Automotive Company ◽  
Car Crash ◽  
Industrial Context ◽  
Current Practices

AbstractCar crash simulation analysis is an important phase within the vehicle development. It intends to analyse the crashworthiness of the vehicle model and examine the level of passive security. However, this activity is not trivial because of the considerable collaboration within the project, the large amount of analysed and exchanged data and a high exigency. Consequently, a solution to assist, ease and reduce the time of the process is desired.To study the current practices followed in the car crash simulation analysis an empirical study has been conducted. This study has been applied within the simulation analysis team, in the development phase, within an automotive company. This paper describes a qualitative analysis of the industrial context and diagnoses the dysfunctions in the current practices. This paper also highlights the current challenges encountered in the car crash simulation analysis.

scholarly journals Aerodynamic characteristics of a free-flight scramjet vehicle in shock tunnel

2021 ◽  
Vol 62 (7) ◽  
Author(s):  
Marie Tanno ◽  
Hideyuki Tanno
Keyword(s):  
System Analysis ◽  
Force Measurement ◽  
Prediction Interval ◽  
Angular Acceleration ◽  
Aerodynamic Characteristics ◽  
Measurement Precision ◽  
Shock Tunnel ◽  
Free Flight ◽  
Vehicle Model ◽  
Aerodynamic Test

Abstract A multi-component aerodynamic test for an airframe-engine integrated scramjet vehicle model was conducted in the free-piston shock tunnel HIEST. A free-flight force measurement technique was applied to the scramjet vehicle model named MoDKI. A new method using multiple piezoelectric accelerometers was developed based on overdetermined system analysis. Its unique features are the following: (1) The accelerometer’s mounting location can be more flexible. (2) The measurement precision is predicted to be improved by increasing the number of accelerometers. (3) The angular acceleration can be obtained with single-axis translational accelerometers instead of gyroscopes. (4) Through the averaging process of the multiple accelerometers, model natural vibration is expected to be mitigated. With eight model-onboard single-axis accelerometers, the three-component aerodynamic coefficients (Drag, Lift, and Pitching moment) of MoDKI were successfully measured at the angle of attack from 0.7 to 3.4 degrees under a Mach 8 free-stream test flow condition. A linear regression fitting revealed a 95% prediction interval as the measurement precision of each aerodynamic coefficient. Graphical abstract

Modelling and Validation of Full Vehicle Model based on a Novel Multibody Formulation

2019 ◽  
Author(s):  
Alberto Parra ◽  
Dionisio Cagigas ◽  
Asier Zubizarreta ◽  
Antonio Joaquin Rodriguez ◽  
Pablo Prieto
Keyword(s):  
Vehicle Model ◽  
Full Vehicle ◽  
Model Based

Free oscillations of parameters of the Earth's motion in the Earth-Moon system

2001 ◽  
Vol 45 (11) ◽  
pp. 922-928 ◽  
Author(s):  
G. S. Kurbasova ◽  
L. V. Rykhlova
Keyword(s):  
Free Oscillations ◽  
Moon System ◽  
The Earth

scholarly journals Between simplicity and accuracy: Effect of adding modeling details on quarter vehicle model accuracy

PLoS ONE ◽  
2017 ◽  
Vol 12 (6) ◽  
pp. e0179485 ◽  
Author(s):  
Ming Foong Soong ◽  
Rahizar Ramli ◽  
Ahmad Saifizul
Keyword(s):  
Vehicle Model ◽  
Model Accuracy
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