نتایج جستجو برای: helicopter services
تعداد نتایج: 304275 فیلتر نتایج به سال:
The compound helicopter design could potentially satisfy the new emerging requirements placed on the next generation of rotorcraft. The main benefit of the compound helicopter is its ability to reach speeds that significantly surpass the conventional helicopter. However, it is possible that the compound helicopter design can provide additional benefits in terms of maneuverability. The paper fea...
BACKGROUND This study compared prehospital on-scene times (OSTs) for patients treated by nurse-staffed emergency medical services (EMS) with OST for patients treated by a combination of EMS and physician-staffed helicopter emergency medical services (HEMS). A secondary aim was to investigate the relationship between length of OST and mortality. METHODS All trauma patients treated in the prior...
HELISCOPE is the name of a project support by MKE (Ministry of Knowledge & Economy) of Korea to develop flying-camera services that transmits the scene of a fire by an unmanned helicopter. In this paper, we introduce the design and implementation of the OFP (Operational Flight Program) for the unmanned helicopter’s navigation based on the well-known TMO scheme. Navigation of the unmanned helico...
BACKGROUND Increasing the range and scope of early activation/auto launch helicopter emergency medical services (HEMS) may alleviate unnecessary injury mortality that disproportionately affects rural populations. To date, attempts to develop a quantitative framework for the optimal location of HEMS facilities have been absent. METHODS Our analysis used five years of critical care data from te...
There is a growing interest in the modeling and control of model helicopters using nonlinear dynamic models and nonlinear control. Application of a new intelligent control approach called Brain Emotional Learning Based Intelligent Controller (BELBIC) to design autopilot for an autonomous helicopter is addressed in this paper. This controller is applied to a nonlinear model of a helicopter. This...
An approximate numerical mthod is presented for analysis and determination of modal characteristics in straight, pretwisted non-unifom helicopter blades. The analysis considers the coupled flapwise bending (out of plane), chordwise bending (in plane), and torsion vibration of both rotating and non-rotating blades. The proposed method is based on the integral expansion of Green functions (struct...
Telemedicine provides medical information and services using telecommunication technologies. It includes systems for remote clinical care and consultation through the use of electronic imaging equipment. In wireless telemedicine, broadband multimedia information that is a combination of video, audio and externally acquired images is transmitted. Emergency medicine helicopters take an important ...
INTRODUCTION In The Netherlands there is no consensus about criteria for cancelling helicopter emergency medical services (HEMS) dispatches. This study assessed the ability of the primary HEMS dispatch criteria to identify major trauma patients. The predictive power of other early prehospital parameters was evaluated to design a safe triage model for HEMS dispatch cancellations. METHODS All t...
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