Engineering, 23.12.2021 03:30 2022rickskyye

The sketch shows a test set-up for measuring the thrust of a liquid oxygen-liquid alcohol rocket. The alcohol and oxygen enter at section 1 with a velocity of 15 m/sec, at a pressure of 50 atm, and with a mass rate of flow of 5 kg/sec. The inlet pipe for the alcohol and oxygen is very flexible, so that the force it exerts on the combustion chamber is negligible. In the exit place of the jet nozzle, at section 2, it is known that the pressure is 2 atm and the exit-plane area is 65 cm2. The force exerted on the scale at the left when the silencer is not used is 1800 N. Atmospheric pressure is 100 kPa.
Estimate the jet velocity in the exit plane of the nozzle when the silencer is not used.

Answers: 1

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, koolgurl2003

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Answers: 1

continue

Engineering, 04.07.2019 18:10, abdirahmansoloman

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

Answers: 1

continue

Engineering, 04.07.2019 18:10, anna22684

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Answers: 2

continue

Engineering, 04.07.2019 18:10, aaliyah80

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Answers: 1

continue

You know the right answer?

The sketch shows a test set-up for measuring the thrust of a liquid oxygen-liquid alcohol rocket. Th...