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Where is the limit of rationality?

Where is the limit of rationality?. Kus on mõstlikkuse piir?. v. T. R. 1. Speed is above all!(??) Or speed as an end in itself?. Affected by three main faktors:. Power. Efficiency. Source:http://images.gougle.com. Source:http://images.gougle.com. Resistance.

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Where is the limit of rationality?

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  1. Where is the limit of rationality? Kus on mõstlikkuse piir? SI:KI:PING Prof Anatoli Alop

  2. v T R 1. Speed is above all!(??)Or speed as an end in itself? Affected by three main faktors: Power Efficiency Source:http://images.gougle.com Source:http://images.gougle.com Resistance SI:KI:PING Prof Anatoli Alop Source: H. Punab, Laeva jõuseadmed. Tallinn, 2008

  3. The ways for speed increasing 1. More power ? SHIP PROPULSION PERFORMANCE Source:http://images.gougle.com SI:KI:PING Prof Anatoli Alop

  4. The ways for speed increasing The better propulsive coefficient? Source:http://images.gougle.com SI:KI:PING Prof Anatoli Alop

  5. The ways for speed increasing Ship propulsion devices A. Active devices Sail Flettner Rotor Source:http://images.gougle.com SI:KI:PING Prof Anatoli Alop

  6. The ways for speed increasing B. Re-active devices I Paddle-wheel η< 0,5 Oars Voith-Schneider propeller, η< 0,5 (for speed more than 20 knots) SI:KI:PING Prof Anatoli Alop Source:http://images.gougle.com

  7. The ways for speed increasing B. Re-active devices II Propeller on a modern mid-sized merchant vessel Ship propeller from 1843 η = 0,7 ... 0,75 Source: http://en.wikipedia.org/wiki/Propeller SI:KI:PING Prof Anatoli Alop

  8. The ways for speed increasing B. Re-active devices II Water-jet-propulsion system Source:http://images.gougle.com SI:KI:PING Prof Anatoli Alop

  9. The ways for speed increasing Perfection of propellers Source:http://images.gougle.com SI:KI:PING Prof Anatoli Alop

  10. Examples http://www.youtube.com/watch?v=qgSfrqAYopg http://www.youtube.com/watch?v=RI9zRXmowO8&feature=related http://www.youtube.com/watch?v=2pQga7jxAyc http://www.youtube.com/watch?v=VuobfwRo-IE http://www.youtube.com/watch?v=FJzK_S5ipc4 http://www.youtube.com/watch?v=meDcNK0-tio http://www.youtube.com/watch?v=GZaPmnJKC0A http://www.youtube.com/watch?v=0hWdvw1TTZg http://www.youtube.com/watch?v=qg14dKSByM8 SI:KI:PING Prof Anatoli Alop

  11. The ways for speed increasing Perfection of propulsion systems Source:http://images.gougle.com SI:KI:PING Prof Anatoli Alop

  12. Cavitation http://www.youtube.com/watch?v=GpklBS3s7iU SI:KI:PING Prof Anatoli Alop Source:http://images.gougle.com

  13. 1 2 a 3 v a 2 The ways for speed increasing Decreasing of fluid resistance? • The main types of resistance: • Friction resistance • Form resistance 1 – vaba voolu ala 2 – piirikiht 3 – hüdrodünaamiline jälg (kiiluvesi) Source: H. Punab, Laeva jõuseadmed. Tallinn, 2008 SI:KI:PING Prof Anatoli Alop

  14. v vmax vmin vmin + p 0 - The ways for speed increasing The main types of resistance: 3. Wave making resistance Source: H. Punab, Laeva jõuseadmed. Tallinn, 2008 SI:KI:PING Prof Anatoli Alop

  15. Vöörilainete süsteem Ahtrilainete süsteem   Lahknevad lained Põiklained Joon. 2.6 The ways for speed increasing The main types of resistance: 3. Wave making resistance SI:KI:PING Prof Anatoli Alop

  16. Body in fluid SI:KI:PING Prof Anatoli Alop

  17. Examples http://www.youtube.com/watch?v=5fQkhTl0LYA SI:KI:PING Prof Anatoli Alop

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