When a fuze ( note this spelling) of some sort is ignited it will burn or deflegrate ( be sure you know the difference) In some cases when then the chemical composition of the fuze material is a propellant or even an explosive of some type the fuze will transition to a detonation within that material. The question is what attributes of the the material - Chemical and Geometric - will govern if or how or how quickly the material detonate?
In: Mechanical Engineering
An Internet service provider has three different subscription packages for its customers:
Package A: $9.95 per month 10 hours of access are provided. Additional hours are $2.00 per hour.
Package B: $14.95 per month 20 hours of access are provided. Additional hours are $1.00 per hour.
Package C: $19.95 per month unlimited access is provided.
Write a MATLAB script to calculates a customer’s monthly bill. It should ask which package the customer has purchased and how many hours were used. It should then display a message with the hours and the total amount due, correct to two decimal places.
Also displays how much money Package A customers would save if they purchased packages B or C, and how much money Package B customers would save if they purchased Package C. If there would be no savings, no message should be printed.
Input Validation: Be sure the user only selects package A, B, or C. Also, the number of hours used in a month cannot exceed 744. Display an error message and exit the program if user enters incorrect information.
I need it answered in MATLAB syntex
In: Mechanical Engineering
Find the design cooling and heating loads of UC 1017. Consider UC 1017 is a detached room. You are free to assume any values reasonably for the calculation. Consult different charts, tables and climate data as necessary. Assuming 50% fresh air and 50% of recirculated air passing through the evaporator coil and the by-pass factor of 0.2, find the dew point temperature of the coil and the capacity of the coil.
I need you to provide the Table and the calculation for everything.
the room size = Hight 6.6 m , width 18m, length 14.5m
I'll attach an example for a student work from last year that I'd like you to follow.
In: Mechanical Engineering
Address the following questions related to heat exchanger effectiveness. Recall that the maximum heat transfer possible is the product of the minimum heat capacity (mass flow rate times specific heat) times the difference between the hot and cold side inlet temperatures. a. sketch the temperature profiles for a 50% and 80% effectiveness heat exchanger. make sure you have the correct shape which includes the degree of steepness at each end. b. What is the effectiveness for a heat exchanger with the following characteristics: the hot side is water entering at 160F and 21Ib/s, and the cold side is air entering at 20F and 4Ib/s. the heat exchanger has been designed to achieve an air outlet of 110F.
In: Mechanical Engineering
11.4 What are the basic requirements that a trainee must satisfy in order to get the most out of training?
In: Mechanical Engineering
11.2 What are the advantages that a trainee receives from training?
In: Mechanical Engineering
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The velocity of a particle traveling in a linear path is known to be: v = ( s ^ 2 )/ 2000 + ( s ^ 4 )/ 2100 where v and s are [m/s] and [m], respectively. Use Riemann sum to determine the time in seconds for the particle to travel from s = 2 m to s = 3m. Use a minimum of ten (10) intervals. Show all work in this worksheet. The technique spoken of in the question is Riemann Sum. Also v=s^m/A + sf^n/B where s is 2, sf is 3, m is 2, n is 4, A is 2000, B is 2100 |
In: Mechanical Engineering
1. An aluminum air-cooled engine cylinder head for a single cylinder, 2-stroke engine is to
be die-cast. The overall diameter of the cylinder head is 101.6 mm. If the projected
plan area of the runners and gating system is 100 mm2 and the casting pressure is 10
MPa (1500 psi), what minimum locking force is required for the die-casting machine in kN.
In: Mechanical Engineering
A high-school classroom is occupied by 20 students who each produce 180 Btu/h (53 W) of sensible heat and 0.20 lb/h (0.09 kg/h) of moisture. The class is to be maintained at 68°F (20°C) and 55% relative humidity. Conditioned air is supplied at 60°F (15°C) to meet the sensible and latent loads. What is the SHR? To meet the loads, what must the humidity ratio and mass flow rate of the supply air be? The office is located at 5000 ft (1500 m) altitude.
In: Mechanical Engineering
A high-school classroom is occupied by 20 students who each produce 180 Btu/h (53 W) of sensible heat and 0.20 lb/h (0.09 kg/h) of moisture. The class is to be maintained at 68°F (20°C) and 55% relative humidity. Conditioned air is supplied at 60°F (15°C) to meet the sensible and latent loads. What is the SHR? To meet the loads, what must the humidity ratio and mass flow rate of the supply air be? The office is located at 5000 ft (1500 m) altitude.
In: Mechanical Engineering
A pot with boiling water at 100 C, if the handle is 3 mm thick, 22 mm wide, 300 mm long and exposed tp 19 C temp, h= 5 w/m2 c.
What is the temp at the end of the handle if it is k= 13, and then if it was k = 180 W/m.k
What kind of assumptions
Does insulation need to be on the intire handle from being burned why?
In: Mechanical Engineering
6.It is proposed to study the entry of an aircraft launched torpedo into seawater. The full-size prototype torpedo is 2.44 m in length and enters at 100 m/s into seawater which has a kinematic viscosity, ν = 1.17 x 10-6 m2/s (see the table in the front cover of your textbook). A model test is proposed where the length of the model torpedo is 0.537 m in length. The desire is to predict the force on the prototype torpedo upon entry into the water, using the measured force in the model study.
a.Assuming F = f(ρ, μ, V, L, g) determine the relevant dimensionless parameters for this flow phenomenon. Use ρ, V and L as the repeating variables in your analysis. V is the entry velocity, L is the length of the torpedo and g is the acceleration of gravity.
b.Assuming the dimensionless parameter containing the viscosity is not important at these conditions determine the necessary launch velocity in the model study and the force on the prototype if the measured model force is 9 N. (Assume g is the same for both the model and prototype. Also assume seawater is used in the model study.)
c.Now, assume the dimensionless parameter containing the viscosity is important. Can the fluid used in the model study be the same as the prototype fluid (seawater)? Explain. If not, can you find a fluid for the model study such that full similitude is achieved between the model and prototype? What fluid?
In: Mechanical Engineering
Using the method of characteristics, compute and graph to scale,
the contour (using solid lines)
and the characteristics (using dashed lines) of a two-dimensional
minimum-length nozzle for the
expansion of air to a design exit Mach number of 3. Assume the
specific heat ratio is 1.4. For
clarity, lay out the design using a schematic, number the
intersection points for the characteristics,
develop the calculations using a spread sheet and show the spread
sheet results for each point for
K-, K+, θ, υ, μ, Mach number, x and y for every point. Use at least
8 characteristics for the initial
expansion. Please turn in the following:
a. Your diagram
b. Your spreadsheet
c. Your spreadsheet results in tabular form
d. Your final scaled drawing of the nozzle characteristics and
nozzle wall boundary.
THRUST GENERATION
In: Mechanical Engineering
You are to make a bowling ball out of 2024-0 by forging in an impression die with flash. What force (tons) is needed? What will be the weight of the finished bowling ball?
Yield strength = 75 MPa = 11 ksi
Ultimate tensile strength = 190 MPa = 27 ksi
Max bowling ball diameter = 8.595 inches
Density = 0.1 lbs/in3
In: Mechanical Engineering
Explain how propeller synchronization system works and also how the Synchrophasing system works. What are the benefits?
In: Mechanical Engineering