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Gust Response Analysis for Helicopter Rotors in the Hover and Forward Flights
Joint Authors
Yang, Chao
Wang, Linpeng
Dai, Yuting
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-20, 20 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-19
Country of Publication
Egypt
No. of Pages
20
Main Subjects
Abstract EN
Dynamic load due to gust for helicopter rotors directly affects the structural stress and flight performance.
In case of gust, it may cause the loss of trust force or the increase of deflection for rotors.
In current work, an effective coupled aeroelastic model based on a medium-deflection beam theory and a nonlinear unsteady aerodynamic model in the time domain were constructed.
Three types of gust in vertical direction were added in the model.
The dynamic response and structural load for helicopter rotors under three types of gust were calculated, respectively.
Results indicated that when rotors suffer a gust in hover at downward direction, the thrust force on rotor disk would decrease significantly when the gust amplitude increases, which should be paid attention in the design.
Among the three gust types with the same gust strength, the maximum instantaneous shear force due to impulse shape gust is the largest.
When the rotors suffer a gust in a forward flight, the shear force at the root of rotors would increase with the gust strength first but then it decreases.
More attention should be paid to the decrease of thrust force and the increase of structural load in a forward flight.
American Psychological Association (APA)
Wang, Linpeng& Dai, Yuting& Yang, Chao. 2017. Gust Response Analysis for Helicopter Rotors in the Hover and Forward Flights. Shock and Vibration،Vol. 2017, no. 2017, pp.1-20.
https://search.emarefa.net/detail/BIM-1205146
Modern Language Association (MLA)
Wang, Linpeng…[et al.]. Gust Response Analysis for Helicopter Rotors in the Hover and Forward Flights. Shock and Vibration No. 2017 (2017), pp.1-20.
https://search.emarefa.net/detail/BIM-1205146
American Medical Association (AMA)
Wang, Linpeng& Dai, Yuting& Yang, Chao. Gust Response Analysis for Helicopter Rotors in the Hover and Forward Flights. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-20.
https://search.emarefa.net/detail/BIM-1205146
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1205146