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A turboprop engine consists of a diffuser, compressor, combustor, turbine, and nozzle. The turbine drives a propeller as well as the compressor. Air enters the diffuser with a volumetric flow rate of 83.7 m3/s at 40 kPa, 240 K, and a velocity of 180 m/s, and decelerates essentially to zero velocity. The compressor pressure ratio is 10 and the compressor has an isentropic efficiency of 85%. The turbine inlet temperature is 1140 K, and its isentropic efficiency is 85%. The turbine exit pressure is 50 kPa. Flow through the diffuser and nozzle is isentropic. Using an air-standard analysis, determine
(a) the power delivered to the propeller, in MW.
(b) the velocity at the nozzle exit, in m/s. Neglect kinetic energy except at the diffuser inlet and the nozzle exit.
Find the horizontal and vertical area moment of inertias of the cross-section shown with respect to its centroid.
water at 30 c is pumped from 100 kpa to 5mpa in a pump with an efficency of 72. what is the ideal pump work and the
you have three blocks of different materials at various temperatures. they are 2-kg block of iron at 600 k a 3-kg block
A model of an airplane is to be tested at 20°C in a wind tunnel. The model is built to 1/12th scale. In order to match both the Mach number and the Reynolds number of the plane, the wind tunnel is pressurized. To what pressure (in atm) should the air..
a what is the total volume of air drawn into the three cylinders each time the engine executes one revolution?b what is
the 2kg block a and the 5kg block b are initially at rest on the inclined plane as shown. all surfaces in this system
hot water from a thermal spring is proposed as the heat source for a power cycle. if water is available at 95 c and a
a 4.53 kg mass attached to the lower end of a spring whose upper end is fixed vibrates with a natural period of 0.45
The following is a diagram shows refraction of a light beam at the interface of two media. The incidence and refraction angles are measured to be 45 deg and 30 deg respectively. Will total reflection happen when the light beam shins from the top to t..
two carnot engines operate in a series. engine 2 uses the waste heat from engine 1. engine 1 receives 200kj at a
The plastic stress-strain curve for the material is given by ( σ = 500 ε 0.25 MPa). The tube is subject to axial load F and internal pressure p so that the stress ratio σθ/σz = 3.0 at all times. The deformation continues until the effective stress..
In the design of buildings, energy conservation requirements dictate that the exterior surface area, As, be mini- mized. This requirement implies that, for a desired floor space, there may be optimum values associated with the number of floors and..
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