To investigate the appearance of staggering effects in the [gamma]-transition energies of our selected SDRB's, for each band, the deviation of the [gamma]-transition energies [E.sub.[gamma]](I) from a smooth reference (rigid rotor
) was determined by calculating fourth-derivatives of [E.sub.[gamma]](I) ([d.sup.4][E.sub.[gamma]]/d[I.sup.4]) at a given spin I by using the finite difference approximation.
However, in the particular case of molecular hydrogen and deuterium gas, one can perform this calculation in the rigid rotor
Inayat-Hussain  studied the nonlinear dynamics of a magnetically supported rigid rotor
in auxiliary bearings.
It was found that the pump-turbine analysed in this workbehaves as a rigid rotor
; therefore it was concluded that the amplitudes of vibrations of first harmonics of blade passing frequency were not significantly affected by rotor response.
In the rigid rotor
, the energies of the yrast states are:
Or rather sans chatter, as the A-160 T Hummingbird features a fully rigid rotor
. Literally three days before Eurosatory, the author was able to see an A-160 Hummingbird in the flesh at the firm's Phantom Works in Victorville in California.
Russo, "Non-linear stability analysis of a rigid rotor
on tilting pad journal bearings," Tribology International, vol.
General equation of the rigid rotor
vibration dynamics can be given in the form
The German company decided to use plastics, fibres and foam fillers to manufacture the blades because it realised that their inherent flexibility was sufficient enough to take the strain of the flapping and lead-lag motion which allowed a rigid rotor
design to be adopted.
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.