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10 votes

How big would a single propeller need to be on a 737?

As usual, we can use the simple momentum theory to quickly estimate the thrust $T$ generated by a propeller: $ T = \sqrt[3]{2 k \rho A P^2} $ where $A$ is the propeller area, $\rho$ is the density and ...
sophit's user avatar
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2 votes
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How diesel fuel is injected into the cylinder of a diesel engine?

maybe a gradual injection of fuel during the power stroke will be helpful That is correct. Modern diesel engines inject fuel gradually. The main purpose of this is to ensure a slower burn of the fuel ...
user71659's user avatar
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8 votes

How diesel fuel is injected into the cylinder of a diesel engine?

The fuel is injected at the top of the compression stroke, timed as you would time the firing of a spark plug. The fuel starts to burn as soon as it atomizes in the combustion chamber due to the ...
John K's user avatar
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0 votes
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How would a GE9X's react to ingesting a person?

I think it would depend significantly on the forward velocity of the aircraft at the time. Taking bird strikes as an analogy, the bird imparts a very high force to the blade over a short period of ...
Daniel K's user avatar
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