1. Selected Aircraft: Embraer ERJ 145 XR
2. Maximum Takeoff Weight (MTOW) [lbs]: 53,131 lbs
3. Engine Type and Rated Thrust [lbs]: Rolls-Royce AE3007 A1E and 7,800
4. Total Available Thrust (sum of all engines for multiengine aircraft) [lbs]: 15,600 pounds
5. Take-off distance at MTOW [ft]: 7,448 ft
Utilizing the above researched information, derive and present (in an instructional way) approaches and solutions to the following problems:
1.) If your selected aircraft's takeoff speed at MTOW was assumed to be 150 kts (i.e., the speed that is reached in the above researched takeoff distance), explain how to find and determine:
a. The total acceleration a [ft/s2] during takeoff roll
b. The sum of retarding forces FR [lb] (drag + friction) that was present during takeoff
c. The time t [s] it took for this takeoff
2.) Given the researched knowledge about the aircraft's thrust, explain for a specific airspeed example how to determine the power P [HP].
3.) For a specific example related to your researched aircraft data, explain how to determine potential EPot[ft-lb], kinetic EKin [ft-lb], and total energy ETot [ft-lb].
4.) For a specific example, explain how the minimum required climb angle AOC [deg] to clear an obstacle can be calculated from knowledge about the obstacle's height and its distance from the point of takeoff.
In: Mechanical Engineering
Derive velocity distribution, maximum velocity, average velocity, and force in z-direction for the following flow conditions, and state your assumptions
Flow of Newtonian fluid in the form of film over flat plate due
to gravity, if kept vertical.
Flow of Newtonian fluid in the form of film over flat plate due to
pressure force, if kept horizontal
Flow of non-Newtonian fluid in the form of film over flat plate due
to gravity, if kept vertical.
Flow of non-Newtonian fluid in the form of film over flat plate due
to pressure force, if kept horizontal
Flow of Newtonian fluid between two parallel flat plate due to
gravity, if kept vertical; Plate are fixed
Flow of Newtonian fluid between two parallel flat plate due to
pressure and gravity, both Plates are fixed.
Flow of Newtonian fluid between two parallel flat plate due to
pressure and gravity, if kept vertical; one Plate is fixed, the
other is moving downwards at constant velocity, Vo.
Flow of Newtonian fluid between two parallel flat plate due to
pressure and gravity, if kept vertical; one Plate is fixed, the
other is moving upwards at constant velocity, Vo.
In: Mechanical Engineering
use experimental equilibrium data and antoine equation to draw the equilibrium curve, and compare the results, what is antoine's equation and how do I use it
In: Mechanical Engineering
Describe the solidification of metals.
In: Mechanical Engineering
1) How does the coating in metals prevent a) corrosion b) stop flamability c) wear d) UV - radiation
In: Mechanical Engineering
Explain how cold work stops the movement of dislocations and strengthens a material.
In: Mechanical Engineering
1.What are the equations of stress in thin-walled and thick-walled cylindrical pressure vessels? Can you use thick-walled equations to describe thin-walled pressure vessels? Under what conditions can you consider a pressure vessel to be thin-walled?
2. In a pressure vessel, thin-walled or thick-walled, what are the radial stresses at the inner surface and outer surface?
In: Mechanical Engineering
Experimental modal analysis deals with the determination of the natural frequencies, damping ratios and mode shapes through vibration testing. Select the necessary equipment to perform modal analysis and justify your selection. Sketch the diagram of equipment.
In: Mechanical Engineering
In MatLab use the linspace function and the element-wise exponentiation (power) operator to generate the vector
1, 10, 100, 1000, 10000
Please give the answer in form of linspace( , , )
In: Mechanical Engineering
Submit Book Review Cover of Barriers and Accident Prevention bookSubmit the scholarly book review of Erik Hollnagel’s book title Barriers and Accident Prevention. (current edition).
You should review the following documents associated with writing a book review.
Notice that book reviews are detailed, but succinct. The submission should be 1000 words. While there are various ways to write a book review, your review should contain the following sections.
Introduction
Short Summary of Content
Analysis and Evaluation of the Book
Conclusions
In: Mechanical Engineering
A proposed steam power plant design consists of an ideal Rankine cycle with reheat and regeneration. Steam enters Turbine 1 at P1 and T1 at the rate of m1 and exits at P2. A fraction (y') of the steam exiting Turbine 1 is diverted to an open feedwater heater while the remainder is reheated to T3 before entering Turbine 2. The condenser operates at P4. Saturated liquid exits the condenser and is fed to Pump 1. The outlet of Pump 1 is fed into the open feedwater heater. Saturated liquid exits the feedwater heater and is fed to Pump 2. All turbines and pumps are isentropic.
--Given Values--
m1 (kg/s) = 50
P1 (Bar) = 140
T1 (C) = 560
P2 (Bar) = 10
T3 (C) = 500
P4 (Bar) = 0.08
a) Determine the specific enthalpy (kJ/kg) at the inlet of
turbine 1.
b) Determine the specific enthalpy (kJ/kg) at the exit of turbine
1.
c) Determine the specific enthalpy (kJ/kg) at the inlet of turbine
2 .
d) Determine the specific enthalpy (kJ/kg) at the exit of turbine
2.
e) Determine the specific enthalpy (kJ/kg) at the condenser
exit.
f) Determine the specific enthalpy (kJ/kg) at the exit of the low
pressure pump.
g) Determine the specific enthalpy (kJ/kg) at the exit of the
feedwater heater.
h) Determine the specific enthalpy (kJ/kg) at the exit of the high
pressure pump.
i) Determine the fraction (y') of flow diverted to the open
feedwater heater.
j) Determine the power (MW) produced by turbine 1.
k) DeteRmine the power (MW) produced by turbine 2.
l) Determine the power (kW) required (a positive number) by the low
pressure pump.
m) Determine the power (kW) required (a positive number) by the
high pressure pump.
n) Determine the total rate of heat transfer (MW) supplied to the
boiler.
o) Determine the thermal efficiency (%) of the power plant.
In: Mechanical Engineering
Explain the Carnot engine cycle and plot its process on a) T-S diagram b) p-v diagram
In: Mechanical Engineering
A brass rod 150.00 mm long and 5.00 mm in diameter extends horizontally from a casting at 200°C. The rod is in an air environment with T∞ =20°C and h=30 W/m2·K. What is the temperature of the rod 37.50, 75.00, and 150.00 mm from the casting?
In: Mechanical Engineering
write a VBA code to convert an arbitrary positive binary fractional number (0< number<1) to equivalent decimal number. the code should acquire the binary fraction number in the format"0.xxxxxx"from input box, then return the equivalent decimal number in a message box. in the code, you may need to use VBA function "mid(_,_,_)" to pick up a specific symbols or characters from a string. you can use below conversion as benchmark to verify and debug your code:
(0.1011)2 = (0.6875)10
In: Mechanical Engineering
Two cylinders of oxygen are connected to each other by a valve. The first tank is 50 liters in volume and contains oxygen at 27 °C and a pressure of 140.37 kPa, and the corresponding values for the other tank are 30 liters, 89 °C and 62.73 kPa. If the valve connecting the tanks is opened and the tanks are allowed to reach some equilibrium condition with the temperature being 50 °C. Answer the following: (a) the equilibrium pressure, (b) the heat transfer between both tanks and the surroundings and the direction of the heat transfer, and (c) the internal energy in the final state if the tanks were insulated.
In: Mechanical Engineering