Design and Stress Analysis of Extraterrestrial ... - The Black Vault

daN/cm 2 ;
PS, PC
are the pressures at input and output of the bearing,
Pi is the pressure in the i-th chamber of the bearing, daN/cm 2 ;
w is the angular velocity of the rotor, lus;
v is
u is
the forward speed of the pivot, cm/s;
the ratio of the average velocity of the velocity profile
in the slot to the maximum. For sufficiently high Reynold's numbers
(Re > 1000) this quantity varies from 0.8-0.9;
p is the density of the working fluid, kg/cm3;
6 is the radial gap between the pivot and the
i,
bearing
along
i+l
the middle of the connector between the i-th and the (i + l)-th
chambers;
zK is the length of the bearing chamber.
The change in the gap between the pivot and the bearing with
respect to the angle of turn is described by formula
6 = (10 + e Cos 0 ), where 60 = (D 0 - D)/(2), e - (Z)/(60).
The system of reading angles is such that the position of
the i-th chamber is determined by angle
while the angular positions of the middles of the connectors between
the i-th and the i + 1, (i - l)-th chambers are
( j) ';jj=x (I= 1, 2, )
9•V- N-= . .
where N is the number of b-earing chambers;
T is the angle between the direction of the forward speed of
the pivot and the direction perpendicular to the center-to-center
distance (see Fig. 3.85).
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