All Questions
Tagged with turbofan boeing-737
7 questions
8
votes
1
answer
1k
views
What are these white drops on the exhaust plug of a CFM56-7B engine?
Does anybody know what those white dried-up drops are?
I checked out another Boeing 737-800 on the ramp and it also had the same defect so I'm guessing this is a common issue, or is it?
This shows up ...
- 81
5
votes
1
answer
833
views
Will N1 shaft turn at the same time as N2 shaft?
For Turbo Fan Engine CFM56-7, was wondering how come the Fan blades (N1 shaft) turns when I turn the N2 Shaft manually.
I thought N1 shaft is connected to the fan and booster rotor and LPT rotor and ...
- 190
2
votes
1
answer
439
views
Why was there no thrust from the engines in the TACA Flight 110 incident?
I have just watched Mayday episode 11, season 11, "Nowhere to Land" about TACA Flight 110 incident. Most key issues of the incident are clearly explained in the episode:
Why both engines turned ...
- 4,160
13
votes
7
answers
7k
views
Why wasn't the 737 MAX's landing gear lengthened enough to mount the engines under the wings, rather than in front of them?
The reason Boeing originally added the MCAS to the 737 MAX was to compensate for a slight pitch-up moment generated by the engine nacelles at very high angles of attack. This pitch-up moment occurred ...
- 28.6k
13
votes
2
answers
5k
views
Why are the engines on the MAX and neo prone to bowing?
The engines of the 737 MAX$^1$ and Airbus A320neo family$^2$ are [more] prone to bowing (shafts deforming if no debow is applied during start – as I understand it, this happens in a turnaround while ...
user14897
0
votes
2
answers
8k
views
What kind of liquid can be seen 'leaking' from the bottom of a Boeing 737-800 engine?
I was on holiday over the Christmas holidays, and was sat in the airport awaiting our plane back to England, looking out of the large window which over looked aircraft that have just landed and the ...
- 3,574
1
vote
1
answer
874
views
Why do turbofans have different nozzles?
The CFM 56-7BE (on the 737) has a long and narrow nozzle, the RR Trent 900 (on the A380) has a sharper nozzle, and the CF-6 (on the 767) has a wider opening at the nozzle. Why do the nozzle sizes vary ...
- 5,739