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Open AccessArticle
Handling Qualities Assessment and Discussion for Helicopter with Slung Load Systems Utilizing Various Sling Configurations
by
Luofeng Wang
Luofeng Wang
Dr. Luofeng Wang currently serves as an assistant professor at the National Key Laboratory of of at [...]
Dr. Luofeng Wang currently serves as an assistant professor at the National Key Laboratory of Helicopter Aeromechanics, College of Aerospace Engineering at the Nanjing University of Aeronautics and Astronautics. He received his doctoral degree from the Nanjing University of Aeronautics and Astronautics in 2022. Following his graduation, he worked at the same institution. Dr. Luofeng Wang's research focuses on helicopter flight dynamics, helicopter-slung load operations, flight control system design, and rotorcraft-pilot couplings. He is currently a member of the Chinese Society of Aeronautics and Astronautics.
and
Renliang Chen
Renliang Chen *
National Key Laboratory of Helicopter Aeromechanics, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
*
Author to whom correspondence should be addressed.
Aerospace 2024, 11(9), 711; https://doi.org/10.3390/aerospace11090711 (registering DOI)
Submission received: 1 August 2024
/
Revised: 28 August 2024
/
Accepted: 30 August 2024
/
Published: 31 August 2024
Abstract
Sling configurations significantly influence the coupled dynamics of the helicopter with slung load system (HSLS), resulting in alterations to handling qualities (HQs) that remain inadequately understood. This study introduces a computer-oriented, generalized method for constructing the HSLS model with various sling configurations. To evaluate the HQs of 1-point, 2-point, and 4-point sling configurations, both the stability and response criteria outlined in ADS-33E and a newly proposed criterion for slung loads towards the updated ADS-33F were employed. Modal analysis was conducted to elucidate the coupled mechanisms of the HSLS under different sling configurations. The findings reveal that the dynamics of the main rotor can attenuate the lateral swing motions of the load in the 4-point sling configuration. While multiple-point sling configurations can enhance the helicopter’s bandwidth, they also amplify the magnitude notch in the helicopter’s response. Nevertheless, when a larger hook distance is employed, the notch frequency is sufficiently distant from the load swing bandwidth, leading to a reduced degradation in HQs. A 4-point configuration with lateral and longitudinal hook distances equal to twice the width and length of the slung load is recommended in practice to achieve sufficient swing stability and mitigate HQ degradation.
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MDPI and ACS Style
Wang, L.; Chen, R.
Handling Qualities Assessment and Discussion for Helicopter with Slung Load Systems Utilizing Various Sling Configurations. Aerospace 2024, 11, 711.
https://doi.org/10.3390/aerospace11090711
AMA Style
Wang L, Chen R.
Handling Qualities Assessment and Discussion for Helicopter with Slung Load Systems Utilizing Various Sling Configurations. Aerospace. 2024; 11(9):711.
https://doi.org/10.3390/aerospace11090711
Chicago/Turabian Style
Wang, Luofeng, and Renliang Chen.
2024. "Handling Qualities Assessment and Discussion for Helicopter with Slung Load Systems Utilizing Various Sling Configurations" Aerospace 11, no. 9: 711.
https://doi.org/10.3390/aerospace11090711
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