Long service time and excessive vibration of aero-engine will cause failure clamps, which usually fix pipelines on the outside an aero-engine. In this paper, nonlinear characteristics caused by loosening clamps in pipeline are determined. According to real parameters clamp-pipeline test rig, clamp is simplified into a spring-damping. Thus, model based cubic stiffness established. The multi-scal...

OBJECTIVE To propose national guidelines for the initial assessment of head and neck squamous cell carcinoma. METHODS Comprehensive review of the literature and consensus discussion with national experts in the field. RESULTS Consensus guidelines are proposed concerning the work-up of patients with a presumed diagnosis of a squamous cell carcinoma of the upper aero-digestive tract.

The purpose of this document is to discuss a 2-dimensional trim model for an aircraft along with the necessary mathematical methods to solve the problem, the computer implementation of the method and the results. The aircraft is climbing at a constant translational velocity, i.e. the aircraft is not accelerating. The 2-dimensional simplification; restricting the motion of the aircraft to longit...

This study assesses the ability of the recent chemistry version (v3.3) of the Weather Research and Forecasting (WRF-Chem) model to simulate boundary layer structure, aerosols, stratocumulus clouds, and energy fluxes over the Southeast Pacific Ocean. Measurements from the VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) and satellite retrievals (i.e., products from the MO...

Agricultural sustainability has the highest priority in all countries, whether developed or developing. Aero-space Remote Sensing and GIS technology are gaining importance as useful tools in sustainable agricultural management and development. This paper discusses the integrated use of Remote Sensing and GIS technology in several areas for sustainable agricultural development and management in ...

The use of simulation tools is essential for the improvement of currently applied inspection techniques and the development of new approaches. This contribution presents results elaborated in recent studies where the application of validated simulation techniques has led to optimized ultrasonic inspection performance on relevant aero engine components.

Two well-posed non-reflecting boundary conditions of PML type for the linearized Euler equations are examined and compared. The efficiency of these boundary conditions are evaluated for circular waves as well as plane waves with different angles of incidence, and the results are compared with characteristic boundary conditions as a reference. PML Metoder för Aeroakustiska Beräkninger Sammanfatt...