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Dynamic Modal Analysis and Optimization of a Mechanical Sensor Arm Deployment System for a C-130 Aircraft
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 02, 2004 by SAE International in United States
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During structural engineering design two of the most overlooked design facets of a finished product is understanding the behavior characteristics of how the product will react when resonated at its natural frequencies and actually defining and understanding the overall vibration profile responsible for the excitation of the structure. A C-130 mechanical arm/pod system has been developed to accommodate 1,000-pounds of sensor payload deployable in flight from a C-130 Hercules military aircraft (variants B thru J). The mechanical arm/pod system will be subjected to a profile of vibration from numerous sources during deployment and while in the final operating position. A general vibration profile for the mechanical arm/pod will be compiled from the plane’s four T-56-A-15 turboprop engines, the atmospheric turbulence and random gust loads. A pitot-accelerometer sensor probe was used to obtain vibration data of the C-130 ramp during a zero-light turbulence category flight for indicated airspeeds of 130 knots and 150 knots. The mid/low frequency values with worse case scenario magnitudes induced by buffeting, flutter and gust loads were computed.
A formal vibration analysis was conducted utilizing the Finite Element Approach and Modal Analysis using Pro/ENGINEER and Pro/MECHANICA software packages. The natural frequency modes for the mechanical arm/pod system was computed in the x, y and z directions with three different geometrical configurations of the structural cross-member supports.
- Zenovy S. Wowczuk - Center for Industrial Research Applications (CIRA), West Virginia University
- Kenneth H. Means - Center for Industrial Research Applications (CIRA), West Virginia University
- Victor H. Mucino - Center for Industrial Research Applications (CIRA), West Virginia University
- Gregory J. Thompson - Center for Industrial Research Applications (CIRA), West Virginia University
- Lawrence Feragotti - Center for Industrial Research Applications (CIRA), West Virginia University
- James E. Smith - Center for Industrial Research Applications (CIRA), West Virginia University
CitationWowczuk, Z., Means, K., Mucino, V., Thompson, G. et al., "Dynamic Modal Analysis and Optimization of a Mechanical Sensor Arm Deployment System for a C-130 Aircraft," SAE Technical Paper 2004-01-3129, 2004, https://doi.org/10.4271/2004-01-3129.
- Wowczuk, Zenovy S. Design of a Standardized Sensor Platform for a C-130 Aircraft Mechanical and Aerospace Engineering Dept., West Virginia University Morgantown, WV 2004
- Feragotti, Lawrence A. Sensitivity Analysis of the C-130 Sensor Deployment System Arm using Finite Element Methods Dept. Mechanical & Aerospace Engineering, West Virginia University Morgantown, WV 2004
- Beards, C.F. Structural Vibration Analysis Ellis Horwood Limited West Sussex, England 1983
- Young, D.F. Munson, B. Okiishi, T. A Brief Introduction to Fluid Mechanics, Department of Mechanical Engineering, Iowa State John Wiley & Sons, Inc New York 1999
- Gagnon, Yves Pro/Mechanica Wildfire Elements and Application Series, Part 1: Idealizations SDC Publications Kelowna 2003