A team of researchers has successfully built a strange four-faced pyramid named Bille that always lands on the same face—no ...

Many spacecraft using more than 3 reaction wheels for both redundancy and extra maneuverability capabilities. Actuators configuration plays an effective role in the performance of the attitude control ...

The discovery of the pyramidal syndrome and tract is briefly reviewed with emphasis on a few key historical aspects. The pursuit of the relationship between the lateralized deficits resulting from ...

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Using laser measurement method for the helicopter blade pyramid angle detection has the advantages in simple structure, fast respond and high accuracy. The detecting principle and the realization of ...