The
Model Positioning Mechanism (MPM) provides information on the control
and handling features of aircraft. Precise information about these
features is extremely important during the aircraft’s development phase
or for subsequent optimization.
DNW’s MPM utilizes a
six-degree-of-freedom test rig that can oscillate a model around its
body axis or create combined motions to simulate realistic flight
maneuvers such as a Dutch roll. The MPM can also be used for static
tests in combination with ground effect simulation.
The six-degree-of-freedom parallel kinematic mechanism used in the MPM offers the following advantages:
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Greater dynamics due to the lower weights being moved
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Greater accuracy due to reduced impact from errors in parallel kinematics
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Lower prices due to simpler construction and identical components for each axis
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Lower demands on tolerances for production and assembly because geometric transformation takes the place of axial alignment
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MPM’s kinematic mechanism consists
of a movable platform that is linked to the wind tunnel’s fixed base by
six legs of uniform length. The six carriages run independently of each
other on guiding rails, allowing displacement within six degrees of
freedom.
System components used
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Sinumerik 840D NC milling machine, in combination with adapted software
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Six Simodrive 1FN3 linear motors |