Optimization of helicopter airframe structures for vibration reduction considerations, formulations and applicationsSeveral key issues involved in the application of formal optimization technique to helicopter airframe structures for vibration reduction are addressed. Considerations which are important in the optimization of real airframe structures are discussed. Considerations necessary to establish relevant set of design variables, constraints and objectives which are appropriate to conceptual, preliminary, detailed design, ground and flight test phases of airframe design are discussed. A methodology is suggested for optimization of airframes in various phases of design. Optimization formulations that are unique to helicopter airframes are described and expressions for vibration related functions are derived. Using a recently developed computer code, the optimization of a Bell AH-1G helicopter airframe is demonstrated.
Document ID
19880064715
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Murthy, T. Sreekanta (NASA Langley Research Center; PRC Kentron, Inc. Hampton, VA, United States)