Taxi645 wrote:Which each improvement in efficiency does chasm between max. payload and range increase? With each efficiency improvement the required weight (fuel) to reach a certain destination decreases, yet often the means to achieve these higher efficiencies is by heavier higher bypass engines. So the lower fuel load requires less MTOW but the heavier engines increase OEW. To maintain the required max. payload, maximum range tends to increase beyond what is required for many missions. The distance between two places on the globe does not change (although what you can fly economically of course does expand with increasing efficiency).
Is this chasm really becoming an issue in defining new aircraft models or is there more to it in reality?
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