Aicraft bounce on touch down8/2/2023 ![]() ![]() ![]() ![]() ![]() I would imagine that unintentional side loads on gear are a bigger issue and bigger cause of wear on the landing assembly. It appears that some devices for spin up have been looked into but the rotational inertia problem seems to be more of a concern than wheel wear. Some times its actually cheaper and easier to make a part that wears out some what quickly and replace it often, then design a complex system that require maintenance and up keep. What are the costs to maintain a system that pre-spins the gear vs the cost of tires. On top of that remember that in aviation it's often about cost. Spinning the gear up can also have a serious gyroscopic effect (since you now have a fast rotating mass) ( see here as well) that will affect the handling of the aircraft. If you spin the gear up faster you actually will create a problem by accelerating the plane when it touches down. First off you would need to spin up the gear to precisely (or at least very close to) the speed that the plane was going to touch down at. The best way to minimize loads on the gear is to land smooth (I know that sounds obvious).įor what it's worth you do not necessarily want to spin up the gear before landing for a few reasons. There are lots of forces acting on the gear at the point of landing. ![]()
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