Homework Answers
The velocity is converted to m/s and then the Ma no. is computed. This value is used in the expression for static pressure to stagnant pressure ratio. All other parameters are taken based on standard air conditions.
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Determine the static pressure and stagnation pressure ratio associated with the following motion in standard air...
For a pressure differential ∆? = p(Stagnation)-p(static)=32lb/ft^2 determine b) the indicated airspeed, in knots (KIAS). (c)...
For a pressure differential ∆? = p(Stagnation)-p(static)=32lb/ft^2 determine b) the indicated airspeed, in knots (KIAS). (c) the true airspeed, in knots (KTAS), if the aircraft is cruising at an altitude of 7,500 ft above sea level.
#4. An air-standard Diesel cycle has a compression ratio of 16 and a cut-off ratio of...
#4. An air-standard Diesel cycle has a compression ratio of 16 and a cut-off ratio of 2. At the beginning of the compression process, air is at 95 kPa and 27 °C, Taking into account the variation of specific heats with temperature, determine (a) the temperature at the end of the heat-addition process, (b) the pressure and temperature at the end of expansion process, and (c) the total exergy destruction associated with the cycle, assuming a source temperature of 2000...
24-1: The net power produced by an air-standard Brayton cycle is 1500 kW. The pressure ratio for ...
24-1: The net power produced by an air-standard Brayton cycle is 1500 kW. The pressure ratio for the cycle is 12 and the minimum and maximum temperatures are 20˚C and 1450˚C respectively. The isentropic efficiencies of the compressor and turbine are 0.75 and 0.80 respectively. Assume an ambient pressure of 100 kPa. Determine: a. The thermal efficiency of the cycle b. The mass flow rate of the air, in kg/s. c. The heat added during the combustion process, in kW....
Air at stagnation pressure of 700 kPa and temperature of 530 K enters a isentropic converging-diverging...
Air at stagnation pressure of 700 kPa and temperature of 530 K enters a isentropic converging-diverging nozzle. The throat area of the nozzle is 5 cm2, the exit area is 12.5 cm2. The back pressure is 350 kPa and a normal shock occurs within a diverging section. Determine (a) exit Mach number, (b) change in stagnation pressure, (c) upstream and downstream Mach number of shock (d) cross sectional area where shock occurs (e) back pressure if the flow were isentropic...
An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2....
An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the com pression process, air is at 95 kPa and 27℃ Accounting for the variation of specific heats with temperature, determine (a) the temperature after the heat-addition process, (b) the thermal efficiency, and (c) the mean effective pressure
Determine the density of air flowing in a pipe, if the measured static pressure on the...
Determine the density of air flowing in a pipe, if the measured static pressure on the manometer is -15 cm (h1a), the air temperature is 23.9°C and the atmospheric pressure is 1.01325 bar. Assume that the manometer fluid is water with a density of 1000 kg/m3. Take R- 287 kJ/kg.K
Also find thermal efficiency and the mean effective pressure please! Required information An air standard Diesel...
Also find thermal efficiency and the mean effective
pressure please!
Required information An air standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the compression process air is at 91 kPa and 27C. Account for the variation of specific heats with temperature. The gas constant of air is R-0.287 kJ/kg K. Determine the temperature after the heat addition process. (You must provide an answer before moving on to the next...
A high-pressure axial compressor for a jet engine rotates at 15,000 rpm with an overall stagnation...
A high-pressure axial compressor for a jet engine rotates at 15,000 rpm with an overall stagnation pressure ratio of 8.5. The mass flow rate of air through the compressor is 16 kg/s and the stagnation conditions at inlet are 200 kPa and 450 K. The polytropic efficiency is 91%. a. If the mean radius is 0.24 m and this is constant throughout the compressor, calculate the total-to-total isentropic efficiency of the compressor and show that, for the stage loading to...
3) The temperature ratio across a moving shock in a 2.5-cm-diameter pipe is 1.204. The static...
3) The temperature ratio across a moving shock in a 2.5-cm-diameter pipe is 1.204. The static pressure and temperature in the pipe in front of the shock are 101.3 kPa and 30°C, respectively. a) Find the shock wave velocity and the air velocity behind the shock, b) The air mass flow rate on both sides of the shock.
A one stage axial air compressor consists of a rotor and a stator, it has a...
A one stage axial air compressor consists of a rotor and a stator, it has a mean diameter of Im for the rotor and a rotational speed of 7645 RPM. Furthermore: Mass flow rate is 50 kg/s .Inlet static temperature and pressure of Ti 276 K and Pi 85 kPa. .Inlet stagnation temperature and pressure of Toi 290 K and Poi 101.3 kPa. .Inlet absolute velocity C1 166.5 m/s Rotor exit static density (p2) equals to 1.3kg/m3 Axial component of...
#4. An air-standard Diesel cycle has a compression ratio of 16 and a cut-off ratio of 2. At the beginning of the compression process, air is at 95 kPa and 27 °C, Taking into account the variation of specific heats with temperature, determine (a) the temperature at the end of the heat-addition process, (b) the pressure and temperature at the end of expansion process, and (c) the total exergy destruction associated with the cycle, assuming a source temperature of 2000...
An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the com pression process, air is at 95 kPa and 27℃ Accounting for the variation of specific heats with temperature, determine (a) the temperature after the heat-addition process, (b) the thermal efficiency, and (c) the mean effective pressure
Determine the density of air flowing in a pipe, if the measured static pressure on the manometer is -15 cm (h1a), the air temperature is 23.9°C and the atmospheric pressure is 1.01325 bar. Assume that the manometer fluid is water with a density of 1000 kg/m3. Take R- 287 kJ/kg.K
Also find thermal efficiency and the mean effective
pressure please!
Required information An air standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the compression process air is at 91 kPa and 27C. Account for the variation of specific heats with temperature. The gas constant of air is R-0.287 kJ/kg K. Determine the temperature after the heat addition process. (You must provide an answer before moving on to the next...
3) The temperature ratio across a moving shock in a 2.5-cm-diameter pipe is 1.204. The static pressure and temperature in the pipe in front of the shock are 101.3 kPa and 30°C, respectively. a) Find the shock wave velocity and the air velocity behind the shock, b) The air mass flow rate on both sides of the shock.
A one stage axial air compressor consists of a rotor and a stator, it has a mean diameter of Im for the rotor and a rotational speed of 7645 RPM. Furthermore: Mass flow rate is 50 kg/s .Inlet static temperature and pressure of Ti 276 K and Pi 85 kPa. .Inlet stagnation temperature and pressure of Toi 290 K and Poi 101.3 kPa. .Inlet absolute velocity C1 166.5 m/s Rotor exit static density (p2) equals to 1.3kg/m3 Axial component of...
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