Fox and McDonald's Introduction to Fluid Mechanics
9th Edition
ISBN: 9781118912652
Author: Philip J. Pritchard, John W. Mitchell
Publisher: WILEY
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Chapter 10, Problem 89P
To determine
The speed of the compressor and the mass flow rate during the test.
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Answer the problem correctly and provide complete and readable solutions. If you can explain the process (briefly), please do so. Thank you!
For a maximum temperature of 1650 and
1800 K at pressure ratios in the compressor
of 12, 15, 20 and 25:1 calculate the thrust,
propulsive efficiency and the specific thrust.
Present and discuss the results.
HANDWRITTEN:
Learjet 35 is a multi-role business jet and a military transport aircraft equipped with tail-mounted turbofan engines. This business jet has a cruising speed of 480 mph and cruising at an altitude of 45,000 ft. The ambient pressure and temperature is 390 R and 310 psfa, respectively. If the compressor has a pressure ratio of 18:1 and the maximum operating temperature is 2885 degrees Fahrenheit. Compute for the (a) compression ratio, (b) volume and temperature at each point, (c) Heat added and Heat rejected (d) Wnet (item c), (e) Brayton work (based on compressor and turbine work), and (f) efficiency.
Note: Make sure to indicate a CORRECT P-V and T-S diagram
Chapter 10 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
Ch. 10 - The geometry of a centrifugal water pump is r1 =...Ch. 10 - Find the resulting -groups when (a) D, , and Q or...Ch. 10 - Consider the centrifugal pump impeller dimensions...Ch. 10 - Dimensions of a centrifugal pump impeller areCh. 10 - Dimensions of a centrifugal pump impeller areCh. 10 - The blade is one of a series. Calculate the force...Ch. 10 - This blade is one of a series. What force is...Ch. 10 - A centrifugal water pump, with 15-cm-diameter...Ch. 10 - A centrifugal water pump designed to operate at...Ch. 10 - A series of blades, such as in Example 10.13,...
Ch. 10 - In passing through this blade system, the absolute...Ch. 10 - A centrifugal pump runs at 1750 rpm while pumping...Ch. 10 - A centrifugal water pump designed to operate at...Ch. 10 - Kerosene is pumped by a centrifugal pump. When the...Ch. 10 - In the water pump of Problem 10.8, the pump casing...Ch. 10 - Use data from Appendix C to choose points from the...Ch. 10 - Data from tests of a water suction pump operated...Ch. 10 - A centrifugal pump impeller having r1 = 50 mm, r2...Ch. 10 - A centrifugal pump impeller having dimensions and...Ch. 10 - An axial-flow fan operates in sea-level air at...Ch. 10 - Data measured during tests of a centrifugal pump...Ch. 10 - A small centrifugal pump, when tested at N = 2875...Ch. 10 - If the impeller of Problem 10.20 rotates between...Ch. 10 - At the outlet of a pump impeller of diameter 0.6 m...Ch. 10 - Typical performance curves for a centrifugal pump,...Ch. 10 - A pump with D = 500 mm delivers Q = 0.725 m3/s of...Ch. 10 - At its best efficiency point ( = 0.87), a...Ch. 10 - Using the performance curves in Appendix C, select...Ch. 10 - A pumping system must be specified for a lift...Ch. 10 - A centrifugal water pump operates at 1750 rpm; the...Ch. 10 - A set of eight 30-kW motor-pump units is used to...Ch. 10 - A blower has a rotor with 12-in. outside diameter...Ch. 10 - A centrifugal water pump has an impeller with an...Ch. 10 - Appendix C contains area bound curves for pump...Ch. 10 - Use data from Appendix C to verify the similarity...Ch. 10 - A centrifugal water pump has an impeller with...Ch. 10 - Catalog data for a centrifugal water pump at...Ch. 10 - A 1/3 scale model of a centrifugal water pump...Ch. 10 - Sometimes the variation of water viscosity with...Ch. 10 - A large deep fryer at a snack-food plant contains...Ch. 10 - Data from tests of a pump, with a...Ch. 10 - A four-stage boiler feed pump has suction and...Ch. 10 - A centrifugal pump operating at N = 2265 rpm lifts...Ch. 10 - A centrifugal pump is installed in a piping system...Ch. 10 - Part of the water supply for the South Rim of...Ch. 10 - Consider the flow system shown in Problem 8.94....Ch. 10 - Afire nozzle is supplied through 300 ft of...Ch. 10 - Performance data for a centrifugal fan of 3-ft...Ch. 10 - The performance data of Problem 10.57 are for a...Ch. 10 - Experimental test data for an aircraft engine fuel...Ch. 10 - Preliminary calculations for a hydroelectric power...Ch. 10 - Conditions at the inlet to the nozzle of a Pelton...Ch. 10 - A Francis turbine is to operate under a head of 46...Ch. 10 - A Kaplan (propeller with variable-pitch blades)...Ch. 10 - Francis turbine Units 19, 20, and 21, installed at...Ch. 10 - Measured data for performance of the reaction...Ch. 10 - For a flow rate of 12 L/s and turbine speed of 65...Ch. 10 - The velocity of the water jet driving this impulse...Ch. 10 - An impulse turbine is to develop 15 MW from a...Ch. 10 - An impulse turbine under a net head of 33 ft was...Ch. 10 - The absolute velocities and directions of the jets...Ch. 10 - A fanboat in the Florida Everglades is powered by...Ch. 10 - A jet-propelled aircraft traveling at 225 m/s...Ch. 10 - When an air jet of 1-in.-diameter strikes a series...Ch. 10 - The volume flow rate through the propeller of an...Ch. 10 - A typical American multi blade farm windmill has D...Ch. 10 - An airplane flies at 200 km/h through still air of...Ch. 10 - This ducted propeller unit drives a ship through...Ch. 10 - A model of an American multi blade farm windmill...Ch. 10 - A large Darrieus vertical axis wind turbine was...Ch. 10 - Show that this ducted propeller system when moving...Ch. 10 - This ducted propeller unit (now operating as a...Ch. 10 - What is the maximum power that can be expected...Ch. 10 - If an ideal windmill is operating at best...Ch. 10 - A prototype air compressor with a compression...Ch. 10 - Prob. 89PCh. 10 - We have seen many examples in Chapter 7 of...
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- PLEASE ANSWER ALL OF THIS QUESTION ASAP!!!arrow_forwardThe compressor of a jet engine tested at sea level on a stationary test bed on a day when the atmospheric temperature and pressure is 298 K and 101kPa, respectively. When running at its design operating point, the masss flow rate through the compressor is measured as 15 kg/s and the rational speed is 6200 rpm. Determine the mass flow rate and the rational speed when the compressor is operating at the design operating point during high altitude cruise with an onlet stagnation temperature of 236 K and an inlet stagnation pressure of 10.2 kpa. The design pressure ratio of compressor is 20. If the compressor isentropic efficiency is determined from the test to be 85=, calculate the power input at the cruise condition. Assume for air that y=1. 4 and Cp=1005 kJ/kg-K throughout.arrow_forwardA single-stage, single-acting air compressor with runs at 600 r/min. It has a polytropic index of 1.26. The induced volume flow rate is 0.72 m3/min and the air must be delivered at 660 kPa. The free air conditions are 101.3 kPa and 15 0C. The clearance volume is 6% of the stroke volume and the stroke/bore ratio is 1.49/1. Calculate the bore of the piston in meter to 4 decimal places.arrow_forward
- QUESTION2 A single-stage double-acting air compressor delivers air at 7.5bar. The pressure and temperature at the end of suction stroke are 1bar and 25°C. It delivers 2.2m3 of free air per minute when the compressor is running at 310rev/min. The clearance volume is 5% of stroke volume. The pressure and temperature of ambient air are 1.03bar and 20°C. Take: index of compression = 1.25 and index of expansion = 1.3. %3D %3D Determine: 2.1 volumetric efficiency of the compressor; 2.2 diameter and stroke of the cylinder if both are equal; 2.3 indicated power of the compressor and Brake power (B.P.) if the mechanical efficiency is 85%. 2.4 Draw the P-V diagram will all the relevant information.arrow_forwardA single-stage, single-acting air compressor with runs at speed 600 rpm. It has a polytropic index of 1.26. The induced volume flow rate is 0.94 cubic meters per min and the air must be delivered at a pressure of 660 kPa. The free air conditions are 101.3 kPa and 15°C. The clearance volume is 6% of the stroke volume and the stroke/bore ratio is 1.6/1. 1. Calculate the delivery air temperature (in °C) 2. The volume of air induced into the compressor is ____ m3arrow_forwardA single-stage, single-acting air compressor with runs at speed 600 rpm. It has a polytropic index of 1.26. The induced volume flow rate is 0.72 cubic meters per min and the air must be delivered at a pressure of 660 kPa. The free air conditions are 101.3 kPa and 15 °C. The clearance volume is 6.1% of the stroke volume and the stroke/bore ratio is 1.6/1. Calculate the volumetric efficiency in fraction to 3 decimal places. Please ignore this line, its for system calculation 1, 100, 0.77, 664 Do not add unit.arrow_forward
- A single-stage, single-acting air compressor with runs at speed 600 rpm. It has a polytropic index of 1.26. The induced volume flow rate is 0.72 cubic meters per min and the air must be delivered at a pressure of 660 kPa. The free air conditions are 101.3 kPa and 15 0C. The clearance volume is 6.8% of the stroke volume and the stroke/bore ratio is 1.6/1. Calculate the volumetric efficiency in 3 decimal places.arrow_forwardA single-stage, single-acting air compressor with runs at speed 600 rpm. It has a polytropic index of 1.26. The induced volume flow rate is 0.81 cubic meters per min and the air must be delivered at a pressure of 616 kPa. The free air conditions are 101.3 kPa and 15 degrees Celsius. The clearance volume is 6% of the stroke volume and the stroke/bore ratio is 1.6/1. Calculate the delivery air indicated power in kW to two decimal places.arrow_forwardA single-stage, single-acting air compressor with runs at speed 600 rpm. It has a polytropic index of 1.26. The induced volume flow rate is 7.2 cubic meters per min and the air must be delivered at a pressure of 697 kPa. The free air conditions are 101.3 kPa and 16 degrees Celsius. The clearance volume is 6% of the stroke volume and the stroke/bore ratio is 1.6/1. Calculate the delivery air temperature in degree Celcius to one decimal place.arrow_forward
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