# Tag Info

2

C, E, and G are the relative winds as 'seen' by the blades of the 1st stage rotor, the blades of the 1st stage stator and the blades of the 2nd stage rotor, respectively. C is the result of the vector addition of B and Y E is the result of the vector addition of D and X G is the result of the vector addition of F and Y

2

This one sort of reminds one of the physics quandary of whether light is a particle or a wave. Let's treat the incoming air as a continuous energy wave. One can see, although the incoming airflow is 90 degrees to the next part of the inlet/rotor/stator/rotor diagram, the trailing edge of the "top wing" would "bounce" the wave right into ...

9

@Federico reminder has complicated a bit the answering process, but now we understand your actual problem, I can provide a focused answer immediately below, I've moved other elements at the end, you may ignore them as they were aimed to clarify your question and are indeed no more relevant. If I consider Y as relative velocity, Then X should also be the ...

0

In class, we haven't talked about it as a specific recovery point. But as a gradual increase in thrust based on airspeed. Q: How does the thrust decrease? Airspeed thrust decreases as the altitude increases. (High altitude = low pressure/less air) less air = less thrust Q: How does ram pressure increase? Ram pressure increases when you fly into the air ...

3

The thrust ($T$) of an engine is $T = Q(V_{out}-V_{in})$ where $Q$ is the mass flow through the engine, $V_{out}$ is the exit velocity of the exhaust gas and $V_{in}$ is the speed at which the air flow enters the engine inlet. The mass flow $Q$ is a product of volume of the air sucked by the engine and air density. When engine is producing considerable ...

1

The overall compression ratio is known as OPR. Wikipedia states the definition very well: overall pressure ratio, or overall compression ratio, is the ratio of the stagnation pressure as measured at the front and rear of the compressor of a gas turbine engine But, should read … as measured at the front of the first compression process and the exit of the ...

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