Consider a 55-cm-long journal bearing that is lubricated with oil whose viscosity is 0.1 k g / m ⋅ s at 20 ° C at the beginning of operation and 0.008 k g / m ⋅ s at the anticipated steady operating temperature of 80 ° C . The diameter of the shaft is 8 cm, and the average gap between the shaft and the journal is 0.08 cm. Determine the torque needed to overcome the bearing friction initially and during steady operation when the shaft is rotated at 1500 rpm.
Consider a 55-cm-long journal bearing that is lubricated with oil whose viscosity is 0.1 k g / m ⋅ s at 20 ° C at the beginning of operation and 0.008 k g / m ⋅ s at the anticipated steady operating temperature of 80 ° C . The diameter of the shaft is 8 cm, and the average gap between the shaft and the journal is 0.08 cm. Determine the torque needed to overcome the bearing friction initially and during steady operation when the shaft is rotated at 1500 rpm.
Solution Summary: The author explains the torque required during the initial operation and the steady state operation of the shaft.
Consider a 55-cm-long journal bearing that is lubricated with oil whose viscosity is
0.1
k
g
/
m
⋅
s
at
20
°
C
at the beginning of operation and
0.008
k
g
/
m
⋅
s
at the anticipated steady operating temperature of
80
°
C
. The diameter of the shaft is 8 cm, and the average gap between the shaft and the journal is 0.08 cm. Determine the torque needed to overcome the bearing friction initially and during steady operation when the shaft is rotated at 1500 rpm.
Qu. 5 Composite materials are becoming more widely used in aircraft industry due to their high strength, low weight and excellent corrosion resistant properties. As an engineer who is given task to design the I beam section of an aircraft (see Figure 7) please, answer the following questions given the material properties in Table 3.
Determine the Moduli of Elasticity of Carbon/Epoxy, Aramid/Epoxy, and Boron /Epoxy composites in the longitudinal direction, given that the composites consist of 25 vol% epoxy and 75 vol% fiber.
What are the specific moduli of each of these composites?
What are the specific strengths (i.e. specific UTS) of each of these composites?
What is the final cost of each of these composites?please show all work step by step problems make sure to see formula material science
Mueh
Battery operated train
Coll
160,000kg 0.0005 0.15 5m² 1.2kg/m³
CD
Af Pair
19
пре neng
0.98 0.9
0.88
Tesla Prated
Tesla Trated "wheel ng
Joxle
270 kW
440NM
0,45m 20
8.5kg m2
the middle
Consider a drive cycle of a 500km trip with 3 stops in
Other than the acceleration and deceleration
associated with the three stops, the tran maintains
constat cruise speed velocity of 324 km/hr. The
tran will fast charge at each stop for 15 min at a
rate Peharge = 350 kW
ΟΙ
15MIN
Stop
w charging
(350kW)
(ผม
τ
(AN
GMIJ
t
6M
1) HOW MUCH DISTANCE dace is covered DURING THE
ACCELERATION TO 324 km/hr?
2)
DETERMINE HOW LONG (IN seconds) the tran will
BE TRAVELING AT FULL SPEED
2
?
3) CALCULATE THE NET ENERGY GAW PER STOP
ete
Please stop screenshoting ai solution,it always in accurate solve normal
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
BEARINGS BASICS and Bearing Life for Mechanical Design in 10 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=aU4CVZo3wgk;License: Standard Youtube License