Questions tagged [engine-placement]

For questions about the location of engines on an aircraft.

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34
votes
4answers
30k views

How does the mounting location of a jet engine affect aircraft performance?

Different jet airplanes mount the engines in different ways. For example: Under the wing To the fuselage How does the engine location affect aircraft performance? Is one better than the other?
9
votes
2answers
5k views

How do you choose engine placement for under wings engines?

I'd like to know how you choose the location of the engines under the wings, in the case of a 4-engines aircraft with low wings (and therefore with engines under the wings). Concerning the ...
29
votes
3answers
9k views

Why do most airliners have underwing engines, while business jets have rear-mounted engines?

Why have modern airliners converged on a configuration with two or occasionally four underwing engines, while modern business jets have converged on a configuration with two or occasionally three rear-...
12
votes
4answers
7k views

Why is the F-35 engine nozzle exposed?

I was wondering why the F-35 engine is exposed. The F-22, F-16 and the YF-23 Black Widow have the exhaust nozzles of their engines blended flush with the fuselage. (YF-23 Black Widow) (F-35) The YF-...
39
votes
6answers
34k views

Why don't passenger aircraft use the trijet configuration anymore?

As a kid I distinctly remember seeing aircraft like the bright blue KLM MD-11 having the prominent third engine on the tail. https://commons.wikimedia.org/wiki/File:KLM_MD_11_AMS.jpg However, I don'...
3
votes
4answers
6k views

Why are the Boeing 747-8 engines on the wings spread apart? [duplicate]

I ask this because the Boeing 747-236 had the engines close together while the 747's have them spread apart. Does it have anything to do with the amount of thrust of the aircraft? Look at how spread ...
16
votes
2answers
1k views

Are the A380 engines interchangeable (given they are not all equipped with reverse)?

I have noticed that the A380 only uses the two engines closest to the fuselage to reverse thrust to brake. Are all four engines the same (i.e.: could they theoretically swap engine 1 and engine 2) or ...