Aircraft Equipment Random Vibration Test Criteria Based on Vibrations Induced by Turbulent Airflow Across Aircraft External Surfaces
AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH
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Vibrations within jet aircraft are caused by a number of phenomena. The principal sources, generally are jet engine noise and turbulent airflow pseudo-noise which impinge on aircraft external surfaces gust, landing, and takeoff loads and on-board mechanical equipment such as engines and pumps. This paper describes the structural vibrations induced by turbulent airflow and generalizes the findings to develop pertinent, adaptable random vibration test criteria for aircraft equipment. These criteria are those recently proposed for inclusion in Method 514 of MIL-STD-810C, Environmental Test Methods.
- Test Facilities, Equipment and Methods
- Fluid Mechanics