Crash Testing of Helicopter Airframe Fittings
نویسندگان
چکیده
As part of the Rotary Wing Structures Technology Demonstration (RWSTD) program, a surrogate RAH-66 seat attachment fitting was dynamically tested to assess its response to transient, crash impact loads. The dynamic response of this composite material fitting was compared to the performance of an identical fitting subjected to quasi-static loads of similar magnitude. Static and dynamic tests were conducted of both smaller “bench level” and larger “full-scale” test articles. At the bench level, the seat fitting was supported in a steel fixture, and in the “full-scale” tests, the fitting was integrated into a surrogate RAH-66 forward fuselage. Based upon the lessons learned, an improved method to design, analyze, and test similar composite material fittings is proposed.
منابع مشابه
Design of a Human Powered Helicopter Airframe
.......................................................................................................................................... 4 Introduction .................................................................................................................................... 5 Prior Projects and Research ...................................................................................
متن کاملof Silesian University of Technology . Series Transport
This article deals with the design of helicopter UAV airframe components. There is a description of UAV airframe design modelling involving already existing components in three-dimensional (3D) form. The modelling methodology focuses in detail on proposed bulkheads by using “top-downbottom-up” methodology. In conclusion, there is a brief description of all proposed bulkheads and an outline of p...
متن کاملHelicopter emergency medical services accident rates in different international air rescue systems
AIM Each year approximately two to four helicopter emergency medical services (HEMS) crashes occur in Germany. The aim of the present study was to compare crash rates and fatal crash rates in Germany to rates in other countries. MATERIALS AND METHODS A MEDLINE search from 1970 to 2009 was performed using combinations of the keywords "HEMS", "rescue helicopter", "accident", "accident rate", "c...
متن کاملAnalysis of the proximity of fatal motor vehicle crash locations to the availability of helicopter emergency medical service response.
Emergency medical service (EMS) response combined with the increasing availability and usage of advanced automatic collision notification (AACN) systems in motor vehicles are important components in the effort to reduce fatalities and serious injuries suffered in motor vehicle crashes. This research note examines fatal motor vehicle crash locations in relation to the coverage area of helicopter...
متن کاملHovering Stability of Helicopters with Elastic Constraints
Aerial vehicles are difficult to stabilize, especially when acted upon by external forces. A hovering vehicle in contact with objects and surfaces must maintain flight stability while subject to forces imparted to the airframe through the point of contact. These forces couple with the motion of the aircraft to produce distinctly different dynamics from free flight. While external contact is gen...
متن کامل