PURPOSE: To reduce energy loss on transfer and jetting and to feed a bubble- water mixed fluid along the surface of a flying object by arranging a fluid inducing plate in the rear edge part of a fluid jetting port to set the jetting direction of the bubble-water mixed fluid by the fluid inducing plate.
CONSTITUTION: A bubble-water mixed fluid generating means 2 is mounted on a flying object in an appropriate position thereof, and air and water are taken in at a desired ratio to jet a fluid from a fluid jetting port of a jetting device A. A flow passage structure 11 is supported outside a hull 10, and further fluid inducing plates 12 connected to the fluid structure 11 are integrally formed in an extended state forward inside the rear edge part of the fluid jetting port. Then by the fluid inducing plates 12, the jetting direction of a bubble-water mixed fluid is induced obliquely backward. Thus coordination between the jetting direction by static pressure of the bubble-water mixed fluid and the jetting direction by kinetic energy thereof is heightened, and energy loss is reduced on transfer and jetting, and the bubble-water mixed fluid is fed along the surface of a flying object.
| JP4616662 | Underwater vehicle and its control method |
| WO/2011/119182 | APPARATUS FOR REDUCING DRAG ON A NAUTICAL VESSEL |
OI TADASHI
TAKAHASHI YOSHIAKI
WATANABE OSAMU
MITSUTAKE HIDEO
MARUYAMA SHOICHI
ISHIKAWAJIMA HARIMA HEAVY IND