A box-enclosed fan is pushing air downwards through a 1 m diameter blade span area. The whole system weighs 20 N and doe
Posted: Fri Mar 04, 2022 10:06 am
A box-enclosed fan is pushing air downwards through a 1 m diameter blade span area. The whole system weighs 20 N and does not rotate. In order for the system to hover mid-air (i.e. stay stationary in the air), determine the following:
Consider g = 9.81 m/s?, and pair = 1.25 kg/m3 ,The air exit velocity is 4.52m/s
-What are the valid assumptions?
-What is the volumetric flow rate needed? Hint: The inlet air speed is very small due to sucking stationary air from the surrounding.
If the system is to accelerate upwards at constant value of 20 m/s?,
determine the following: Consider g = 9.81 m/s2, and pair = 1.25 kg/m3
What is the new air exit velocity needed? What is the increase in the air exit velocity?
Hint 1: The inlet air speed is very small due to sucking stationary air from the surrounding.
please solve all of them
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Consider g = 9.81 m/s?, and pair = 1.25 kg/m3 ,The air exit velocity is 4.52m/s
-What are the valid assumptions?
-What is the volumetric flow rate needed? Hint: The inlet air speed is very small due to sucking stationary air from the surrounding.
If the system is to accelerate upwards at constant value of 20 m/s?,
determine the following: Consider g = 9.81 m/s2, and pair = 1.25 kg/m3
What is the new air exit velocity needed? What is the increase in the air exit velocity?
Hint 1: The inlet air speed is very small due to sucking stationary air from the surrounding.
please solve all of them
། ། ། ། ། ། ། ། །