- Nov 20, 2020
It looks like chinese have already cracked the code.
increase weight -> increase fuel consumption (battle higher inertia)why the weight of an engine is seen as being so important
When your engine is overweight, the rear part of the jet body becomes heavier, then the whole body weight balance was broken. In order to re-balance it, you either reduce the structure weight of the rear part to compensate that, or increase the front weight to match it. The first option requires new material and will affect the other part of body, generally you will end up re-designing the whole structure. The later option will make the jet much heavier than original design, as the result you need the engine to provide higher thrust which will increase the engine's weight further.I'm curious about something - why the wIIRC eight of an engine is seen as being so important. If an engine provides 20,000lbs of thrust, why does it matter so much whether it weighs 2,200lbs or 2,500lbs? I can see that one engine increases empty aircraft weight by 300lbs compared to the other but that is not such a big deal, is it? IIRC Kaveri was reported to be 100lbs+ overweight and that was a matter of concern. Why?
PS Interesting video on the GEnX. I recommend watching, too.
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