| 11. | The internal alignment of the shock waves means that Busemann's biplane produces minimum wave drag.
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| 12. | Therefore, anything that reduces wave drag will theoretically make it easier for a swimmer to swim faster.
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| 13. | It is the sudden and dramatic rise of wave drag that leads to the concept of a sound barrier.
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| 14. | Several other attempts to reduce wave drag have been introduced over the years, but have not become common.
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| 15. | Alternatively, at Mach numbers increasing towards the speed of sound and beyond, wave drag dominates design concerns.
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| 16. | A method of decreasing wave drag was discovered by German researchers in 1935 & mdash; sweeping the wing backwards.
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| 17. | In transonic flight, wave drag is commonly referred to as "'transonic compressibility drag " '.
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| 18. | A method of decreasing wave drag was discovered by German researchers in World War II : sweeping the wing backward.
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| 19. | It had a favourable chordwise distribution of cross-sectional area and hence a low wave drag in supersonic flight.
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| 20. | Wave drag is one of the forms of drag created by swimmers, the others being pressure drag and friction drag.
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