A jet engine can develop a thrust at 480 mph. What horsepower is being delivered? What...
A jet engine can develop a thrust at 480 mph. What horsepower is being delivered? What if the efficiency of the engine is 85%?
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A jet engine can develop a thrust at 480 mph. What horsepower is
being delivered? What...
(10%) Problem 6: The thrust produced by a lone jet engine produces a force of F-98000...
(10%) Problem 6: The thrust produced by a lone jet engine produces a force of F-98000 N. Which requires the aircraft (with a mass of m= 6100 kg) a distance of d-0.71 km to take off 50% Part (a) What is the take-off speed of the aircraft v, in m/s? Grade Summary Deductions Potential 100 78 4 3 9 6 E Submissions Attempts remaining per attempt sino cos tano cotan asino acoso atino acotano sinho cosho tanho cotanh) Degrees Radians...
A jet aircraft engine operates at a high temperature of 750 degrees celcius, and its exhaust...
A jet aircraft engine operates at a high temperature of 750 degrees celcius, and its exhaust temperature the effective low temperature for the engine is a hit 350 degrees celcius. What is the thermodynamic efficiency limit for this engine? Can you explain how you get the answer in decent detail? Just so I can refer back to it as a study source. Thanks!
1. A 12-cylinder, 4-stroke automobile engine is being designed. What type of cylinder arrangement would you...
1. A 12-cylinder, 4-stroke automobile engine is being designed. What type of cylinder arrangement would you recommend? (a) In-Line (b) V-Type (c) W-Type (d) Rotary. 2. The expression "cylinder cut-out" means : (a) Half of cylinder volumes is used. (b) Half of cylinder numbers is used. (c) Half of cylinder masses is used. (d) None of the above. 3. Adding lubrication oil to the inlet fuel- air mixture in 2-st engines will increase: (a) HC emissions. (b) CO emissions (c)...
Problem #2 17.5 pts)Topic. Entropy A typical gasoline engine operates at 200°F while the maximum ...
Problem #2 17.5 pts)Topic. Entropy A typical gasoline engine operates at 200°F while the maximum temperature inside the combustion chamber can be 1100F. On the other hand, the temperature of the combustion chamber of a typical diesel engine can reach up to 2500 F. So let's compare the performances of two Carnot cycles, one operating between ~1100°F and 200°F heat reservoirs and the other between ~2500°F and 200°F, to have a first-order crude estimate of engine performance Step a) Choose...
Section V 9. What is the maximum work that can be obtained from 5500 J of heat supplied to a steam engine with a hi...
Section V 9. What is the maximum work that can be obtained from 5500 J of heat supplied to a steam engine with a high temperature reservoir at 150°C if the condenser is at 15°C? (Hint: calculate the efficiency of the steam engine first). 10. In running a Carnot cycle backward to produce refrigeration, the objective is to for a given amount
Can anyone answer the question and explain it thx alot 22. Jet engine manufacturing entails enormous...
Can anyone answer the question and explain it thx alot
22. Jet engine manufacturing entails enormous economies of scale. Pratt & Whitney, a large U.S. jet engine producer, faces substantial competition from Rolls-Royce, the British engine manufacturer. What would be the BEST way for P&W to cope with a dollar that has recently appreciated by 50%? a) accelerate R&D spending and cost-cutting efforts b) shift some of its production abroad c) raise the foreign currency prices of its engines sold...
Quantitative: In the 1950s liquid hydrogen was considered as a fuel for a new type of...
Quantitative: In the 1950s liquid hydrogen was considered as a fuel for a new type of aircraft being developed, the SR-71 Blackbird (shown in Figure 1). Figure 1: The SR-71 Blackbird Early research on the project focused on which fuel to use for the Blackbird. Pratt & Whitney had a J-57 engine that was designed for kerosene and being considered for implementation on the Blackbird. The J-57 only took 5 months to convert to running on liquid hydrogen, however tests...
6-29. Two pumps are being considered for service in Africa. Each can draw water from a...
6-29. Two pumps are being considered for service in Africa. Each can draw water from a depth of 50 meters and both pumps deliver 60 horsepower (output) to the pumping operation. One of the pumps must be selected. It is expected that the pump will be in use 800 hours per year. The following data are available. If electricity costs $0.14 per kilowatt-hour, which pump should be selected if the MARR is 8% per year? Recall that 1 hp =...
What Exactly Does Being “Creative” and “Effective” Mean? An argument can be made that “effective” or...
What Exactly Does Being “Creative” and “Effective” Mean?
An argument can be made that “effective” or successful
advertising is usually being creative with a purpose. Certainly,
the notion of effective advertising can vary from culture to
culture. In the United Kingdom, a premium may be placed on being
different, humorous, or out-of-the ordinary in differentiating
campaigns from the mass of mediocre advertising.
In the United States, creative advertising is viewed more often
as being “effective” in that the creativity has...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
(10%) Problem 6: The thrust produced by a lone jet engine produces a force of F-98000 N. Which requires the aircraft (with a mass of m= 6100 kg) a distance of d-0.71 km to take off 50% Part (a) What is the take-off speed of the aircraft v, in m/s? Grade Summary Deductions Potential 100 78 4 3 9 6 E Submissions Attempts remaining per attempt sino cos tano cotan asino acoso atino acotano sinho cosho tanho cotanh) Degrees Radians...
1. A 12-cylinder, 4-stroke automobile engine is being designed. What type of cylinder arrangement would you recommend? (a) In-Line (b) V-Type (c) W-Type (d) Rotary. 2. The expression "cylinder cut-out" means : (a) Half of cylinder volumes is used. (b) Half of cylinder numbers is used. (c) Half of cylinder masses is used. (d) None of the above. 3. Adding lubrication oil to the inlet fuel- air mixture in 2-st engines will increase: (a) HC emissions. (b) CO emissions (c)...
Problem #2 17.5 pts)Topic. Entropy A typical gasoline engine operates at 200°F while the maximum temperature inside the combustion chamber can be 1100F. On the other hand, the temperature of the combustion chamber of a typical diesel engine can reach up to 2500 F. So let's compare the performances of two Carnot cycles, one operating between ~1100°F and 200°F heat reservoirs and the other between ~2500°F and 200°F, to have a first-order crude estimate of engine performance Step a) Choose...
Section V 9. What is the maximum work that can be obtained from 5500 J of heat supplied to a steam engine with a high temperature reservoir at 150°C if the condenser is at 15°C? (Hint: calculate the efficiency of the steam engine first). 10. In running a Carnot cycle backward to produce refrigeration, the objective is to for a given amount
Can anyone answer the question and explain it thx alot
22. Jet engine manufacturing entails enormous economies of scale. Pratt & Whitney, a large U.S. jet engine producer, faces substantial competition from Rolls-Royce, the British engine manufacturer. What would be the BEST way for P&W to cope with a dollar that has recently appreciated by 50%? a) accelerate R&D spending and cost-cutting efforts b) shift some of its production abroad c) raise the foreign currency prices of its engines sold...
Quantitative: In the 1950s liquid hydrogen was considered as a fuel for a new type of aircraft being developed, the SR-71 Blackbird (shown in Figure 1). Figure 1: The SR-71 Blackbird Early research on the project focused on which fuel to use for the Blackbird. Pratt & Whitney had a J-57 engine that was designed for kerosene and being considered for implementation on the Blackbird. The J-57 only took 5 months to convert to running on liquid hydrogen, however tests...
6-29. Two pumps are being considered for service in Africa. Each can draw water from a depth of 50 meters and both pumps deliver 60 horsepower (output) to the pumping operation. One of the pumps must be selected. It is expected that the pump will be in use 800 hours per year. The following data are available. If electricity costs $0.14 per kilowatt-hour, which pump should be selected if the MARR is 8% per year? Recall that 1 hp =...
What Exactly Does Being “Creative” and “Effective” Mean?
An argument can be made that “effective” or successful
advertising is usually being creative with a purpose. Certainly,
the notion of effective advertising can vary from culture to
culture. In the United Kingdom, a premium may be placed on being
different, humorous, or out-of-the ordinary in differentiating
campaigns from the mass of mediocre advertising.
In the United States, creative advertising is viewed more often
as being “effective” in that the creativity has...
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