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The whole plane weighs only about 3,500 pounds, so what aeronautical engineers call “wing loading,” or force of the air on the wing, is low.

"We have calculated what we need in terms of energy, so that gave us the surface and it gave us the wing loading."

The need for increased take-off power results from the higher wing loading necessitated by the modern demand for commercial aircraft with higher cruising speeds with reasonable power expenditure.