I use a few different reference books, but the books I like the best are 1. Powerplant by Dale Crane and 2. Aircraft Propulsion and Gas Turbine Engines by Aircraft Propulsion and Gas Turbine Engines by Ahmed F. El-Sayed. Dale Crane's book provides a good description of the engine and Ahmed F. El-Sayed provides a good numerical analysis of the engines. I've just ordered another book , Aircraft Powerplants by Michael J Kroes and Thomas Wild.
@@RoddyMcNamee Does that mean when ground based industrial units develop less power due to a decrease in barometric pressure, actually become slightly more efficient ?
@@kletops46 I never considered that before, but yes, if the compressor inlet pressure drops, then theoretically for a given compressor outlet the compression ratio will increase, leading to higher efficiency.
The input Temperature is the atmospheric temperature, which is low obviously, because the higher we go up from the see-level the lower the temperature would be. Now about the output temperature, he assumed that the compressor power would be same at both level, hence, the output temperature should be higher at 10 km. It is stated from 3.01 sec in the video.
@@tigesinaus The temperature is higher because the compressor doesn't have as much air (mass of air) to compress at altitude and therefore can compress it further and achieve a higher temperature. This will increase the efficiency. However, the smaller mass of air will mean less thrust.
Excellent 👍👍👍👍👍
Well explained
Legend thank you!!
So good
I thought it was all good do with constant thrust and decreasing drag but it’s heaps more than that. Wow!
Thank you :)
Hi Sir, are there any reference books you can recommend? Thanks for videos.
I use a few different reference books, but the books I like the best are 1. Powerplant by Dale Crane and 2. Aircraft Propulsion and Gas Turbine Engines by Aircraft Propulsion and Gas Turbine Engines by Ahmed F. El-Sayed.
Dale Crane's book provides a good description of the engine and Ahmed F. El-Sayed provides a good numerical analysis of the engines.
I've just ordered another book , Aircraft Powerplants by Michael J Kroes and Thomas Wild.
What is gamma in pressure ratio equation
Ratio of specific heat capacities. Gamma = 1.4 for air.
Is this saying the Engine is "More Efficient" but develops "Less Power" (Thrust) ?
@@kletops46 Yes.
@@RoddyMcNamee Does that mean when ground based industrial units develop less power due to a decrease in barometric pressure, actually become slightly more efficient ?
@@kletops46 I never considered that before, but yes, if the compressor inlet pressure drops, then theoretically for a given compressor outlet the compression ratio will increase, leading to higher efficiency.
How do you find A ? Why did you choosed 0,2 ?
0.2 m^2 was the approximate area of an engine on the Fouga Magister Aircraft.
Thank you @@RoddyMcNamee
Sorry to keep asking questions, but why do you get a higher output temperature at altitude?
The higher the temperature difference, the more the efficiency would be.
@@mdatiqurrahman9951 Yes but why is the output temperature higher at altitude when the input temperature is lower?
The input Temperature is the atmospheric temperature, which is low obviously, because the higher we go up from the see-level the lower the temperature would be. Now about the output temperature, he assumed that the compressor power would be same at both level, hence, the output temperature should be higher at 10 km. It is stated from 3.01 sec in the video.
@@tigesinaus The temperature is higher because the compressor doesn't have as much air (mass of air) to compress at altitude and therefore can compress it further and achieve a higher temperature. This will increase the efficiency. However, the smaller mass of air will mean less thrust.
@@RoddyMcNamee Perfect. Thank you!