Marine propulsion combination with improved cooling

Details Marine propulsion combination with improved cooling Marine propulsion combination with improved cooling

1987-11-02

1988-12-13

Basinger, Sherman D.

Marine propulsion

Screw propeller

Having means to control flow around propeller

440 88, 114 56, B63B 100

Patent

active

047907835

ABSTRACT:
Improved cooling is provided for a marine twin drive to prevent overheating, particularly during turns. It has been found that a low pressure path (46) exists along the strakes (24, 26) on the bottom surface (20) of the boat hull (12). Air can enter at the water surface (48) and be channeled longitudinally rearwardly along the bottom of the boat hull along the strakes and be ingested in the propulsion units (16, 18) which are generally longitudinally aligned with and rearward of the strakes. The low pressure path is eliminated by modified strake structure (26a) occupying the space (44) otherwise causing such low pressure path.

REFERENCES:
patent: 3148652 (1964-09-01), Canazzi
patent: 3330239 (1967-07-01), Dornak
patent: 4193369 (1980-03-01), Talamantes
patent: 4348972 (1982-09-01), Parsons
patent: 4392779 (1983-07-01), Bloemers et al.
patent: 4492176 (1985-01-01), Arima
patent: 4636175 (1987-01-01), Frazzell et al.

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