CIMdata PLM Industry Summary Online Archive
2 May 2007
Product News
LMS Virtual.Lab Landing Gear Reduces Errors and Saves Time in Landing Gear Engineering
LMS announced the introduction of a dedicated simulation solution for landing gear systems based on LMS Virtual.Lab Motion. The new solution allows development teams to build detailed aircraft landing gear models, reliably simulate their real-life performance, quickly assess multiple design alternatives and optimize aircraft designs before prototype building. LMS Virtual.Lab Landing Gear has been developed in close cooperation with several aircraft and landing gear manufacturers to cover the specific engineering challenges in developing landing gear systems.
LMS Virtual.Lab Landing Gear supports development teams in gaining a detailed insight in the dynamic behavior of the landing gear, and its overall performance in terms of reliability, stability and safety. The integrated solution supports the analysis of the behavior of the landing gear in all regular maneuvers. It also assesses the response of new system designs to extreme and failure load cases, for which physical tests are either too dangerous or too costly to perform.
LMS Virtual.Lab Landing Gear includes a dedicated user interface which is fully customized to the specific modeling and simulation process for landing gear engineering. This allows users to build their design from pre-defined and fully parameterized landing gear templates or to create their own landing gear configuration template. To assure a realistic representation of the landing gear, the simulation models include tires, wheels, brakes, telescopic oleo damper struts and linkages to brace and retract the system. The models incorporate aerodynamic loads and information about retraction, deployment, take-off, landing and ground maneuvers. Based on the model parameters, LMS Virtual.Lab automatically assembles the complete landing gear model, applies the ground load cases, runs the simulation and performs standardized post processing of the results. This integrated process eliminates extensive modeling efforts, removes potential modeling errors and supports the quick assessment of design alternatives.
The new Landing Gear solution is based on LMS Virtual.Lab Motion, offering advanced multi-body simulation capabilities to assess dynamic system behavior. LMS Virtual.Lab Landing Gear therefore takes the flexibility of components and the operation of control systems into account to accurately calculate loads on components and the complete landing gear under a wide range of operating conditions. For example, landing gear retraction and extension can be simulated to size the actuators and hydraulic valves that drive these maneuvers. Takeoff, landing, taxiing, symmetric and asymmetric braking and other ground maneuvers can all be accurately simulated to validate the correct functioning and the safety limits of new landing gear designs.
Dedicated post-processing features help engineers to easily identify and solve problems in the landing gear design. Users can review dynamic responses, including all system loads, accelerations and positions. They can detect collisions based on detailed CAD models, analyze motion envelopes and force vector animations.
"LMS Virtual.Lab Landing Gear addresses the key requirements of landing gear development teams to assess the overall performance of a new design or a set of derivatives in the shortest possible time," commented Willy Bakkers, Vice-President and General Manager of the LMS CAE Division. "The new LMS Virtual.Lab solution ensures that aircraft engineers can optimize their design before building prototypes and maximizes their return from the available test resources."
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