Sikorsky proved the efficiency of the rigid rotor
co-axial design in 2010 when its 6,000-lb.
The moment of inertia of the associated band was found to be close to that of a rigid rotor
with a 2:1 axis rotation.
The initiator of that concept was Abe Karem, now CEO of Karem Aircraft, the system being based on a hingeless rigid rotor
with variable rotational speed, which is trimmed according to the flight situation.
General equation of the rigid rotor
vibration dynamics can be given in the form
This paper deals with the balancing of a rigid rotor
supported by hydrodynamic journal bearings by using plane separation technique and artificial neural networks.
counter-rotating, all-composite rigid rotor
The two-bladed rotor, although in better shape dynamically than a single-bladed rotor, must accept very high cyclic loading if a rigid rotor
hub system is employed or provide a so called teeter bearing to allow the rotor blade to rock (as a pair) to alleviate blade, drive train and tower head loading.
Written by a University of Washington professor, this undergraduate chemistry textbook explores the particle in a box, the harmonic oscillator, the rigid rotor
, and the hydrogen atom in depth.
However, in the particular case of molecular hydrogen and deuterium gas, one can perform this calculation in the rigid rotor
In the rigid rotor
, the energies of the yrast states are:
In Section 2, a mathematical model of steady state behavior of the center of a rigid rotor
supported by hydrodynamic journal bearing has been developed.
Or rather sans chatter, as the A-160 T Hummingbird features a fully rigid rotor