Questions
A one-stage rocket takes off from Space and is tasked with entering into a geosynchronous (the...

A one-stage rocket takes off from Space and is tasked with entering into a geosynchronous (the

period of orbit is one day) low earth orbit at an altitude of 2,000km above the surface of the Earth. The mass of the

rocket is 550,000kg,

a) At what final speed does the rocket need to be moving to achieve the specified orbit?

b) If the exhaust velocity of the fuel is 2.20x103m/s what percentage of the rocket’s mass must be fuel?

c) Given that the rocket expends fuel at a rate of 1.4x104kg/s would this rocket be appropriate for manned flights?

In: Mechanical Engineering

kindly do the stability analysis ( longitudnal, lateral stability) lift and moment coefficient for boeing 787...

kindly do the stability analysis ( longitudnal, lateral stability) lift and moment coefficient for boeing 787 or boeing 777 aircraft.

In: Mechanical Engineering

A small changes in liquid will give a large change in metric. Which indirect liquid level...

A small changes in liquid will give a large change in metric. Which indirect liquid level measurement below, that detect a small changes in liquid and have a low cost? Briefly explain how the measurement works.
a) Capacitance level gauge
b) Hydrostatic pressure gauge
c) Bubbler
d) Ultrasonic level gauge

In: Mechanical Engineering

a) Briefly write down the basic heat gains that make up the cooling load in items....

a) Briefly write down the basic heat gains that make up the cooling load in items.

b) A desired feature from refrigerants is that the evaporation pressure is high and the condensing pressure is low. Explain the main reason for this by drawing the T-s diagram of a single-stage cooling cycle.

In: Mechanical Engineering

3.Write a report on AI based Social distancing monitoring using drone with out human interaction report...

3.Write a report on AI based Social distancing monitoring using drone with out human interaction report should contain drone design it specification it's algorithm control system algorithm.minimum 10 A4 size page.No plagiarism is allowed other wise down rate is given

In: Mechanical Engineering

Consider an axisymmetric pipe flow simulation. The pipe is 40 m long in axial direction and...

Consider an axisymmetric pipe flow simulation. The pipe is 40 m long in axial direction and its radius is 0.2 m. The structured mesh is used in the computational domain and it is uniformly spaced by 1000 cells in axial direction and 20 cells in radial direction. The simulation is conducted in transient and the time step size was set to 0.001 second. After running the simulation for a long time, the flow has reached a fully developed condition. The maximum axial velocity along the axis is found to be 15 m/s. The fluid is a liquid water where its density is 1000 kg/m3 and its dynamic viscosity is 0.001 kg/m-s. What is the maximum Courant number in the domain? DO NOT USE scientific notation (5 * 10^-6) or E-notation (or engineering notation, e.g. 5E-6).

In: Mechanical Engineering

10-35: A helical coil compression spring is needed for food service machinery. The load varies from...

10-35: A helical coil compression spring is needed for food service machinery. The load varies from a minimum of 4 lbf to a maximum of 18 lbf. The spring rate k is to be 9.5 lbf/in. The outside diameter of the spring cannot exceed . The springmaker has available suitable dies for drawing 0.080-, 0.0915-, 0.1055-, and 0.1205-in-diameter wire. Use squared and ground ends, and an unpeened material. Using a fatigue design factor nf of 1.5, and the Gerber-Zimmerli fatigue-failure criterion, design a suitable spring.

Solve Problem 10–35 using the Goodman-Zimmerli fatigue-failure criterion.

In: Mechanical Engineering

I'm running a single cylinder engine simulation using ADAMS/View to determine the torque output based off...

I'm running a single cylinder engine simulation using ADAMS/View to determine the torque output based off of the combustion force which needs to be given as a function of time. I'm having trouble with the setup for the combustion force function setup. Can someone explain how to set up such a function?

In: Mechanical Engineering

Q/ A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger. The saturated liquid...

Q/ A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction
heat exchanger. The saturated liquid refrigerant at 40 °C leaving the condenser and entering
the heat exchanger is used to superheat the saturated vapor refrigerant leaving the evaporator
at 7 °C by 8 °C. If the compressor is capable of pumping 5 l/s of vapor refrigerant measured
at the inlet to the compressor and the compression processes are considered isentropic in
both cases listed below, determine;
(a) The refrigerating capacity in kW, the compressor power in kW, and the COP of the
system in the absence of the heat exchanger.
(b) The refrigerating capacity in tons refrigeration, the compressor horsepower, and the
COP of the system in the presence of the heat exchanger.?

In: Mechanical Engineering

2 kW of power will be trasnmitted via chain-sprocket system. Rotational speed of input shaft is...

2 kW of power will be trasnmitted via chain-sprocket system. Rotational speed of input shaft is 20 rpm. Required approximate rotational speed of input shaft is 20 rpm. Required approximate rotational speed for the out shaft is 7 rpm. Approximate distance between center lines of input and output shafts should be 900 mm. This chain-sprocket system is used for an elevator and it is asked to use single or multiple DIN 8187 chain with 31.75 mm pitch.

a) Calculate number of teeth on sprocket, which is on output shaft, is number of teeth on the sprocket on input shaft is 19.

b) Calculate input power for selection of chain and select the appropriate chain type.

c) Calculate pitch circle diameters of driving and driven sprockets, linear velocity of chain, length of chain, (number of chain links), and exact center line distance between driving and driven sprocket.

d) Calculate factor of safety of the selected chain.

In: Mechanical Engineering

I have a 3-D matrix with (100,100,100) elements in Matlab, but it exceeds the limit of...

I have a 3-D matrix with (100,100,100) elements in Matlab, but it exceeds the limit of display. I want to extract those values from Matlab to excel. I want to know how to extract all the data values?

In: Mechanical Engineering

Study and indicate a method of marking of 8 holes on a single Pitch Circle Dia...

Study and indicate a method of marking of 8 holes on a single Pitch Circle Dia (PCD) of a round disc (illustration). The part of the problem is that of many of these discs are to be produced in a day (Bulk Production), what is the solution for quick marking and the quickest way of drilling holes so that the process time is minimized. No special machine is to be utilized. Standard machine shop equipment (Like manual Lathe/ Milling/ Drill machines) is to be taken into consideration for a solution.

Give a comprehensive answer with example not exceeding a single page.

In: Mechanical Engineering

1. Evaluate a music wire spring with plain ends where the wire diameter is 0.100” and...

1. Evaluate a music wire spring with plain ends where the wire diameter is 0.100” and the outer
diameter is 0.600”. The desired spring rate is 100 lbf/in and the free length is 2.4”. Let the load
safety factor be 1.00.
a) What is the spring index, C?
b) What is the total number of coils, Nt?
c) What is solid length, Ls?
d) What is the maximum suggested load?
e) What is the maximum suggested deflection?
f) What is the force to close to solid, Fs?
g) What is the critical length?
h) What is the critical frequency?
i) What is the factor of safety, solid, ns?

In: Mechanical Engineering

Find the solution for each part A) In the tensile and wood experiments, you learned about...

Find the solution for each part

A) In the tensile and wood experiments, you learned about the stress-strain behaviors of different materials. Sketch a thoroughly labeled stress-strain diagram to explain the mechanical properties of 1) window glass, 2) copper metal, 3) annealed copper metal. Make sure to have all three curves on the same plot. Please label the x and y-axis, and the different mechanical parameters (Ultimate Tensile Strength, Yield Stress, Rupture Stress and Modulus of Elasticity).

B) Hookes law is only applicable in the plastic region of the stress-strain curve. (True/False)

C) Polymers are more ductile than ceramics. (True/False)

In: Mechanical Engineering

Name the three Functions that advanced manufacturing automation, explain them in a few wards, and give...

Name the three Functions that advanced manufacturing automation, explain them in a few wards, and give an example on each one of them?

In: Mechanical Engineering