Efficient calculation of hingeless rotor blade flap-lag-torsion dynamics for helicopters

Desmond Adair, Martin Jaeger

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A fast and efficient method of calculation, using the Adomian modified decomposition method is developed for the dynamic analysis of rotating hingeless helicopter blades. The coupled equations of motion include shear, rotary inertia and axial tension due to centrifugal stiffening and these are uncoupled to give three ordinary differential equations, which are solved to provide modal frequency and modal shapes for the flap, lag and torsional displacements. Moment and shear curves of a typical rotor blade are also calculated. The method gives accurate results with fast convergence noted and can easily be extended when non-linear terms are present.

Original languageEnglish
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
Publication statusPublished - Jan 1 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period1/7/191/11/19

Fingerprint

Flaps
Ordinary differential equations
Helicopters
Torsional stress
Dynamic analysis
Turbomachine blades
Equations of motion
Rotors
Decomposition

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Adair, D., & Jaeger, M. (2019). Efficient calculation of hingeless rotor blade flap-lag-torsion dynamics for helicopters. In AIAA Scitech 2019 Forum (AIAA Scitech 2019 Forum). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-1029

Efficient calculation of hingeless rotor blade flap-lag-torsion dynamics for helicopters. / Adair, Desmond; Jaeger, Martin.

AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, 2019. (AIAA Scitech 2019 Forum).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adair, D & Jaeger, M 2019, Efficient calculation of hingeless rotor blade flap-lag-torsion dynamics for helicopters. in AIAA Scitech 2019 Forum. AIAA Scitech 2019 Forum, American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA Scitech Forum, 2019, San Diego, United States, 1/7/19. https://doi.org/10.2514/6.2019-1029
Adair D, Jaeger M. Efficient calculation of hingeless rotor blade flap-lag-torsion dynamics for helicopters. In AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA. 2019. (AIAA Scitech 2019 Forum). https://doi.org/10.2514/6.2019-1029
Adair, Desmond ; Jaeger, Martin. / Efficient calculation of hingeless rotor blade flap-lag-torsion dynamics for helicopters. AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, 2019. (AIAA Scitech 2019 Forum).
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