Describe the objective and application of each of the following (what is it? How and when can it be applied? What are the anticipated results?): functional analysis and allocation, operator task analysis, error analysis, OSD
In: Mechanical Engineering
define each of the following in relation to systems engineering (CASA)
Operation Labor
Repair Labor
Support Equipment Maintenance
RecurringTraining
Repair Parts and Materials
Repair Consumables
Condemnation Spares
Technical Data Revisions
Transportation Recurring Facilities
Recurring Item Management
Software Maintenance
Contractor Services
Engineering Changes
MiscellaneousO&S
Recurring Warranty
In: Mechanical Engineering
a heat transfer experiment consist of a stream of air blowing over a heated horizontal plate. what causes the formation of both velocity and thermal boundary layers? what causes a difference in thickness between them?
In: Mechanical Engineering
MATLAB
According to Moore’s Law ( an observation made in 1965 by Gordon Moore, a cofounder of Intel Corporation, the number of transistors that would fit per square inch on a semiconductor integrated circuit doubles approximately every 2 years. In 1965, the state of the art technology allowed for 30 transistors per square inch. Moore’s Law says that transistor density can be predicted by d = 30*2(t/2) where t is measured in years.
1. Letting t = 0 represent the year 1965 and t = 46 represent 2011, use this model to calculate the predicted number of transistors per square inch for the 46 years from 1965 to 2011 (use 2 year increments). Display the results in a clearly labeled table.Plot the results using a semilogy plot.
The total transistor count on integrated circuits produced over the 40 year period from 1971 thru 2011 is shown in Table P5.19
.2. Create a semilogy plot of the actual data, using circles only to indicate the data points (no lines).
3. Include a second line representing the predicted values using Moore’s Law, based on the 1971 count as the starting point. Add legends and titles. 4. Plot all 3 of these plots onto a single figure.5.
Has Gordon’s Law proved valid or not?
In: Mechanical Engineering
does anyone have notes for finite element method and/ or structural dynamic?
In: Mechanical Engineering
CULTURAL BACKGROUND: AMERICAN AND JAPANESE BUSINESS CULTURES
Discuss in detail recent developments in the competition and colaboration between american and japanese automobile manufacturers. Do recent improvements in american competitiveness reflect improvements in engineering, production, organizational structure, and human resource policy or are these improvements simply a result of the strenght of Japanese currency, which makes japanese cars too expensive?
In: Mechanical Engineering
Describe the general theory of stress and strain. Explain the properties and characteristics that can be determined using a tensile test. Give general comparison of the different samples. This should be 1-2 pages typed
In: Mechanical Engineering
A pure aluminum bar has a diameter of 15 cm and a length of 1.25 m. The rod is initially uniform in temperature at 300?C. The bar is now suddenly exposed to a convection environment at 50?C with h = 1250 W/m K. How long does it take the center to cool to a temperature of 80?C? (a) Determine if a lumped capacitance analysis is or is not appropriate. (b) Determine the cooling time assuming the lumped capacitance model is valid. (c) Finally, determine the time required for a point 0.5 cm from the surface to drop to 275?C
In: Mechanical Engineering
(Fluid Mechanics; Euler's equation and Bernoulli equation)
As I know, in order to derive Euler's equation from Naveri-Stokes equation, the additional conditions are 1)Incompressible and 2)Inviscid
Then, in order to derive Bernoulli's equation from Euler's equation, what additional conditions are needed?
As I thought, Euler's equation already meets the incompressible and invsicid condtion, so only "steady state" is the additional condition to derive Bernoulli equation from Euler's equation.
Am I right? In addition, are both Navier-stokes equation and Euler's equation need not to be steady state?
In addition, would you derive Bernoulli equation from Euler's equation?
In: Mechanical Engineering
What extra steps must you add for a rendezvous between non-coplanar spacecrafts?
In: Mechanical Engineering
List at least three advantages and disadvantages of a powder-bed laser sintering process.
In: Mechanical Engineering
In: Mechanical Engineering
Would the four metals: nickel, titanium (well. the three boats I'm using would melt before this would at a pressure of the vacuum pump we have is capable of), iron, or chromium
would they react and cause corrosion to tungsten,
molybdenum, or tantalum boats at temperatures of 1400 celcius or
higher at vacuum pressures of 7.1x10^-2 torr? What would react and
corrode with what? Why?
would any of these 7 metals (the three boats and the
other four) react with what little oxygen is left in the vacuum
chamber at a pressure of 10^-2 torr?
Please help and show where your sources are
ALSO where can I find a table for emissivity values at
VARYING temperatures for tungsten, molybdenum, and
tantalum?
In: Mechanical Engineering
Nitrogen (N2) contained in a piston–cylinder arrangement, initially at 9.9 bar and 421 K, undergoes an expansion to a final temperature of 300 K, during which the pressure–volume relationship is pV1.1 = constant. Assuming the ideal gas model for the N2, determine the heat transfer in kJ/kg.
In: Mechanical Engineering