A jet engine at 7000m altitude takes in 45 kg/s of air and adds 550 kJ/kg in the combustion chamber. The chamber cross section is 0.5 m2 and the air enters the chamber at 80 kPa and 5oC. After combustion the air expands through an isentropic converging nozzle to exit at atmospheric pressure. Estimate (a) the nozzle throat diameter (b) the nozzle exit velocity and (c) the thrust produced by the engine.

Q: 7. If 10 kgm/min of air are compressed isothermally from p1 = 96 kPa and V1 = 7.65 m³/min to p2 =…

A: According to the question data m=10kg/min P1=96kPa P2=620kPa V1=7.65m3/min Process 1 to 2 is an…

Q: CO, enters a nozzle at a mass flowrate of 5000 kg/hr at a pressure of 200.0 kPa, a temperature of…

A:

Q: Compute for the entropy of 2.349-kg/s steam in kW/K if the pressure and temperature are 20 MPa and…

A: Given data: m˙=2.349 kg/sP=20 MPaT=570°C Need to determine the entropy.

Q: Air enters a compressor at ambient conditions of 100 kPa and 23 °C and leaves at 800 kPa. Heat is…

A:

Q: Helium expands in a nozzle from 220 psia, 740 R, and negligible velocity to 15 psia. Calculate the…

A: Consider the diagram shown below for the nozzle. Since the inlet velocity is negligible, the inlet…

Q: A Carnot machine extracts 100 KJ of heat from a reservoir at 800°C and transfers heat to the…

A: let T1 =1073K T2 =293K Q1 =Heat extract from source =100KJ Q2 =Heat given to sink  s1 =Entropy of…

Q: Q-3/A vessel is divided equally in two parts. The first part is evacuated, while the second part of…

A:

Q: What would the nozzle pressure (in kPa) be if the sonic flow with Helium in the nozzle has a total…

A: A nozzle is mechanical equipment where the pressure energy of the working fluid gets converted into…

Q: A large reservoir maintains air at 6.8×105 P a and 15°C. The air flows isentropically…

A:

Q: The mass flow rate of gas entering nozzle is 25 /m3 . The inlet total pressure= 200kPa and inlet…

A: The total inlet pressure, P1 = 200 kpaThe total temperature, T1 = 900 KThe exit pressure, P2 = 80…

Q: Given the temperature of the sink, the change in entropy and the effective work done by Carnot…

A:

Q: Given the temperature of the sink, the change in entropy and the effective work done by Carnot…

A:

Q: Q-3/A vessel is divided equally in two parts. The first part is evacuated, while the second part of…

A: Given ; T= 333 K , P1 = 4 bar ,P2 = 40 KPa

Q: An ideal gas enters a turbine with a velocity of 40 m/s through an inlet pipe with a diameter of 160…

A: As per the guidelines, I can answer only first three sub-parts. For rest parts please re-post again.…

Q: Air enters a frictionless duct with V₁ = 70 m/s, T₁ = 600 K, and P₁ = 350 kPa. Letting the exit…

A: To Find : The entropy change at intervals of 200 K. Given : The inlet velocity is v1=70 ms The…

Q: An auxiliary turbine receives saturated steam at 300 psia with negligible kinetic energy at the rate…

A:

Q: Water vapor enters an isentropic turbine at a flow rate of 1 kg/s, a temperature of 500 °C and a…

A: Rankine Cycle: It is thermodynamic cycle which describing the process which useful for power…

Q: Consider a turbojet-powered airplane flying at a standard altitude of 4 km. The inlet and exit areas…

A:

Q: onsider a converging nozzle, with exit air velocity of Ma=1.

A: We have  a converging nozzle, with exit air velocity of Ma=1.

Q: Does a scramjet engine have better efficiency than a ramjet engine for hypersonic flights? Why?

A: To find: Lets us determine the reason for scramjet engine have better efficiency than a ramjet…

Q: Air approaches a turbine at 2 MPa and 400°C at a speed of 200 m/s and leaves at 100 kPa and 200°C at…

A: Given: The temperature at inlet of turbine is T1=400°C. The speed at inlet of turbine is v1=200…

Q: Find its maximum velocity A new design of Saturn 19 rocket with mass 1.54 x106 kg has a propulsion…

A:

Q: Hot air enters a nozzle at pressure of 200 kPa and temperature of 700°C with a velocity of 70 m/s,…

A: Given data:

Q: Air approaches a turbine at 2 MPa and 400°C at a speed of 200 m/s and leaves at 100 kPa and 200°C at…

A: Given: The pressure at inlet of turbine is P1=2 MPa. The temperature at inlet of turbine is…

Q: Saturated steam at 200 kPa expands in an adiabatic nozzle at an inlet velocity of 5 m/s to an exit…

A: given data- P1 = 200 kPa (saturated steam) P2 = 100 kPa (quality of steam x = 0.95) to determine-…

Q: High Engine Temperature Temperature (tE) in °C AS (high – low) in KJ/kgK Efficiency (c) in % Carnot…

A: Given that: For Carnot heat engine A Low temperature = 32 oC ∆S = 0.2043 kJ/kg-K WN = 57 kJ/kg For…

Q: A compressor (300 W) increases air pressure from atmospheric to 2,000 kPa. As the compressor…

A: as given that the outer casing is heated so the process is not adiabatic.

Q: EMERGENY!!!! A perfect gas of adiabatic type expands from 1200K and 900kPa to 700k. Calculate the…

A:

Q: A 26 g ice cube at -67\deg C is placed in a lake whose temperature is 15\deg C. Calculate the change…

A:

Q: It is proposed that a nozzle receive air at 2 m/s, 300 K, and 150 kPa, at temperature of 280 K, and…

A:

Q: An industrial nozzle accepts steam at 1 MPa, and 300 C. From negligible velocity, the nozzle creates…

A: Given: Inlet pressure: 1 MPa Inlet temperature: 300 C Exit pressure: 800 kPa Exit velocity: 200 m/s…

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.