Aerospace and Defence

aerospace1. Global airline passenger traffic is expected to grow dramatically. This rise in passenger traffic brings about challenges that need to be addressed in shorter time frames such as designing lighter and quieter aircrafts for increased passenger comfort. Challenges in numerical modeling of flexible components in an aircraft can be reduced by testing and validation.1. Aircraft landing gears – Component fatigue is a top priority in aircraft design especially for critical systems such as landing gears, which are constantly subjected to large loads during touch down as well as repeated loads during braking and taxiing.

2. Ground vibration testing – These tests help in identification of critical vibration modes for increased aircraft safety. Flutter analysis – Flutter is a phenomenon of aerodynamic instability where wings and other aircraft surfaces vibrate excessively above certain speeds and is therefore a priority item in aircraft development. By comparing predicted results from analysis models with physical test results, simulation models can be verified and tuned to accurately arrive at flutter airspeed. Critical stiffness attributes can be obtained from model updating to create flexible body representations of individual components.

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