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| r2d2m2 | Jun 21 2009, 11:39 PM |
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Some obvious errors in this discussion: Aldo shows a picture of something he describes as a "Pratt & Whitney Combustion Case" but this is not a casing of any kind. I don't do Pratt & Whitney but it's still obvious what this is. It is a flame tube. You can see an interconnector protruding from the side, which would link it to another flame tube. You can see where the fuel would enter at the top (strictly speaking it's the front). You can see holes (getting bigger towards the bottom/back), which would allow air to mix with the fuel in a carefully controlled manner. And this flame tube is a just a small part of a combustion chamber (which is not the same as a casing). Aldo shows a diagram that is simply labelled RB211. This highlights another misunderstanding as it may well be the wrong diagram. RB211 refers to a family of similar but quite different engines that vary significantly in size, thrust range, etc. For example the 747 can have RB211 engines but, as I'm sure you can imagine, they produce a lot more thrust than the RB211s on a 757. This is an easy oversight to make when you don't know your Rollers so it is worth noting. There are more. I will come back to this again when I can even though it's not entirely relevant to this thread. |
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| Flight 77 Engines · American Flight 77 | |
9:33 PM Dec 2
