Unsteady Aerodynamic Modeling and Analysis of Load Distribution for Helicopter Rotor Blades

Dayhoum, Abdallah; Zakaria, Mohamed Y.; Abdelhamid, O. E.

doi:10.1061/(asce)as.1943-5525.0001355

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…However, the limited payload capabilities and the high energy demand of current VTOL systems have been problematic. New engines, intricate swash plates, and unique rotor design combinations have helped to partially overcome such limitations but further enhancement is required [1,2,3].…”

Section: Introductionmentioning

confidence: 99%

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Enhancing VTOL Performance: Shrouded Rotor BLDC Motor Model and Validation

Dayhoum,

Etewa,

Ramirez-Serrano

et al. 2024

J. Phys.: Conf. Ser.

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One prominent area of current research interest, driven by a multitude of factors and considerations, centers around drone technology. A primary challenge currently faced in the realm of small-scale Unmanned Aerial Vehicles (UAVs) is the increasing demand for increased power coupled with the constraint of limited flight duration provided by available battery technology. These vehicles fall into two overarching categories based on the presence or absence of shrouding around their rotor(s). Shrouded rotors play a pivotal role in augmenting aerodynamic performance by enhancing thrust while mitigating blade-tip vortex losses and numerous other aspects that are not presented in open rotors. Although such characteristics contribute to an expanded effective rotor diameter and optimized airflow within the shroud. There are numerous aspects related to power, shroud and rotor characterization, etc. that need to be understood before shrouded rotors are commonly used. This paper presents the implementation of an effective mathematical model for Brushless Direct Current (BLDC) motors, specifically tailored for application in conjunction with shrouded rotors aimed at enhancing thrust and reducing power consumption. The proposed model serves to predict the performance characteristics of the utilized motor within the context of the specified shrouded rotor combination. In order to identify the effects of the induced load torque on the rotor’s dynamic response, a methodical analysis is conducted on the numerical simulation of the proposed model. The results are experimentally verified for hover flying in a case study of a scalable and highly maneuverable vertical takeoff and landing aircraft developed for operations in highly confined spaces. The adoption of this modeling technique is anticipated to significantly streamline the shrouded rotor combination design and selection process, particularly in the selection of an appropriate motor.

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Section: Introductionmentioning

confidence: 99%

“…Among other things, it is known that shrouded rotors improve thrust and blade tip vortices losses improving the rotor's aerodynamic performance. These features increase the rotor's effective diameter and maximize airflow through the shroud among other things [4,5,6,7,8].…”

Section: Introductionmentioning

confidence: 99%