Originally posted by Triple C
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"There is never enough time to do or say all the things that we would wish. The thing is to try to do as much as you can in the time that you have. Remember Scrooge, time is short, and suddenly, you're not there any more." -Ghost of Christmas Present, Scrooge
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Originally posted by desertswo View PostI hope you weren't referring to the standard Navy G-1 leather one. Even if you could wear it in the cockpit, it's not insulated in any way. Mostly it's a heavy windbreaker. I'm not an aviator but I have one given to me by my CO in Constellation for a job well done. I never wore it on active duty as I wasn't qualified to, but it's kind of my standard hanging out around outside in the desert winter. It's warm enough without being suffoctating, and it hides my .45 well enough, but I wouldn't want to try to survive in a blizzard wearing it.
One of the warmest coats I have ever worn. Only you can't do jumping jacks in it and many winter days it is too warm for me. However, put on gloves plus the coat and here I come Boston.;)
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tbm3fan if you come out to Boston, check the Collings Foundation schedule to see if they are having an open house or show out in Stow. They have a very nicely preserved, airworthy TBM Avenger to look over. (along with many other things, but guessing from your user name and avatar I'd say you were a tbm fan)
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I was wondering today if in modern times (or the last 20 years or so) if there is any reliability advantage to having heavy military aircraft with 4 engines instead of 2. Speaking mainly about transports, tankers, and the C-135 crowd. Is it preferable to have 4 engines or does the increased maintenance and fuel continue too large of a burden. New designs are appearing with 2 engines but I am wondering if this has more to do with what the manufacturers are offering.
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Can anybody explain to me why are the russians and the chineese are going for round non stealthy engine nossels on their 5th Generation jets PAK FA/ T-50 , J-31 , J20 instead of a stealthy one like F-22 Raptor's?
and even F-35 has a round non stealthy engine nossel
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The F-22 nozzles and their shape are part of the vectored thrust system that gives it some crazy maneuverability. None of the other planes you mentioned have Vectored Thrust.
No need for Stealth design. Notice that the nozzles on the planes in questioned are masked by stealthy fuselage extensions.
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Originally posted by Gun Grape View PostThe F-22 nozzles and their shape are part of the vectored thrust system that gives it some crazy maneuverability. None of the other planes you mentioned have Vectored Thrust.
No need for Stealth design. Notice that the nozzles on the planes in questioned are masked by stealthy fuselage extensions."There is never enough time to do or say all the things that we would wish. The thing is to try to do as much as you can in the time that you have. Remember Scrooge, time is short, and suddenly, you're not there any more." -Ghost of Christmas Present, Scrooge
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Originally posted by Alpha1 View Postthis doesn't answer why even the F-35 has a non stealthy engine
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Originally posted by Alpha1 View Postthis doesn't answer why even the F-35 has a non stealthy engine"There is never enough time to do or say all the things that we would wish. The thing is to try to do as much as you can in the time that you have. Remember Scrooge, time is short, and suddenly, you're not there any more." -Ghost of Christmas Present, Scrooge
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Question: What are the differences between single and twin engine fighters? Do either have any notable design advantages over the other? What factors (performance or economics wise) decide an Air Force's preference towards one or the other?"Draft beer, not people."
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Originally posted by Red Team View PostQuestion: What are the differences between single and twin engine fighters? Do either have any notable design advantages over the other? What factors (performance or economics wise) decide an Air Force's preference towards one or the other?"Draft beer, not people."
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Twin engine and single engine fighters each have their own advantages and drawbacks. Twin engine designs provide some extra redundancy should the aircraft suffer an engine failure as well as an easy method of providing high amounts of thrust on heavy fighters.
Single engine fighters offer advantages in increased internal volume for fuel, lower maintenance requirements, and lower weight/fuel consumption.
The utility of having a second engine is a hotly debated topic with the F-35 being a single engine design. Twin engine fighters tend to have both engines located close together along the center-line of the aircraft. This is great in case of mechanical failure leading to loss of an engine, because it prevents highly off centered thrust that could lead to the inability to control the aircraft. However it does mean that in the event the aircraft eats a missile up the tailpipe, both engines are likely to be destroyed. Similarly, having the engines adjacent to one another means that if one fails in a spectacular manner, the other may be destroyed along with it.
Aircraft designed with fewer engines (single engine fighters/twin engine airliners) are becoming more common as jet engine design is increasingly refined and reliability is getting very good. Better jet engine design is also allowing for the production of engines with very high levels of thrust, which reduces the number required to achieve the desired amount of power.
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