Dab tsi yog qhov ceev - mus rau - ntev piv ntawm aluminium alloy nuv ntses nkoj?

Feem ntau, lub nkoj nkoj ntawm aluminium alloy nuv ntses tuaj yeem muab faib ua peb hom yooj yim raws li Kev Ceev {{0}}Length ratio. Qhov no yog lwm tus lej tsis muaj nuj nqis. Qhia qhov ceev ntawm aluminium alloy nuv ntses nkoj hauv pob caus thiab faib nws los ntawm lub hauv paus square ntawm qhov ntev ntawm cov kab dej kom tau txais tus lej no. Piv txwv li, lub nkoj lub cev muaj zog nrog 25- ko taw dej ntev ntev muaj qhov siab tshaj plaws ntawm 12 pob caus thiab qhov ceev - mus rau - ntev piv ntawm 2.4. Lwm qhov piv txwv yog lub nkoj dej hiav txwv nrog kev caij nkoj ceev ntawm 28 pob caus thiab ib txoj kab dej ntev ntawm 1,000 ko taw. Qhov ceev -rau-ntev piv yog 0.885.

Zoo ib yam li dej hiav txwv- mus li niaj zaus, lub nkoj txav ntawm lub nkoj nuv ntses tsis tsim nqa thaum mus ncig ntawm qhov siab. Qhov siab tshaj plaws ceev - mus rau - qhov ntev piv ntawm lub nkoj xa khoom tiag tiag yog 1.34. Ntawm qhov ceev no, txawm hais tias lub zog nce ntxiv, cov cua ntsawj ntshab ntawm tus Tsov tus tw ntawm lub nkoj tsuas yog ua kom tob, tab sis qhov ceev ntawm lub nkoj tsis tuaj yeem nce ntxiv. Rowbboats, canoes, towing tej nkoj nquam thiab txheem sailing excursion nkoj txhua yam muaj ib tug raug dej hulls.

For example, the waterline of a sailing boat is 25 feet, and its speed is 6.7 knots, or about 71/. mile per hour, with a speed-length ratio of 1.34 times the square root of 25. This is the "hull speed (Hull s knock pee called d)" if flying increases the sails and power, it will only cause the boat and its equipment to overwork.

The other type is the semi-displacement hull, which often has a round Russian part and a fairly wide tail plate to obtain the lift generated by the water flow below the hull. It has a higher speed than the drainage type, and the speed-length ratio can be up to 2.5. For example, shrimp boats in Maine, some brisk sailing boats, yachts and various old excursion boats. This type is also called semi-planing hull.