DIVEBOT: A diving robot with a whale-like buoyancy mechanism
نویسندگان
چکیده
Sperm whales feed primarily on squid and often have to find their food at depths between 1000 and 2000 meters. To do this they require sophisticated buoyancy regulation. It has been known for some time that they achieve long-term buoyancy regulation by altering the temperature of their spermaceti organ, located in the enlarged snout. In a large male this organ may contain four tons of spermaceti oil. The temperature regulation is achieved by alterations in blood flow through the organ.
منابع مشابه
Swimming gaits, passive drag and buoyancy of diving sperm whales Physeter macrocephalus.
Drag and buoyancy are two primary external forces acting on diving marine mammals. The strength of these forces modulates the energetic cost of movement and may influence swimming style (gait). Here we use a high-resolution digital tag to record depth, 3-D orientation, and sounds heard and produced by 23 deep-diving sperm whales in the Ligurian Sea and Gulf of Mexico. Periods of active thrustin...
متن کاملHydrodynamic performance of the flippers of large-bodied cetaceans in relation to locomotor ecology
Cetaceans evolved flippers that are unique in both size and shape probably due to selection pressures associated with foraging and body size. Flippers function as control surfaces for maneuverability and stability. Flippers of cetaceans and engineered hydrofoils are similar with streamlined cross-sections and wing-like planforms, which affect lift, drag and hydrodynamic efficiency. Scale models...
متن کاملBody density and diving gas volume of the northern bottlenose whale (Hyperoodon ampullatus)
Diving lung volume and tissue density, reflecting lipid store volume, are important physiological parameters that have only been estimated for a few breath-hold diving species. We fitted 12 northern bottlenose whales with data loggers that recorded depth, 3-axis acceleration and speed either with a fly-wheel or from change of depth corrected by pitch angle. We fitted measured values of the chan...
متن کاملLocomotion and foraging strategy in foot-propelled and wing-propelled shallow-diving seabirds
Buoyancy is a major determinant of locomotory cost in diving animals. As seabirds have a large amount of air in their feathers and respiratory system, they should work hard against buoyancy to descend in the water column. Since buoyancy decreases with increasing hydrostatic pressure, shallow divers, especially, should work against buoyancy during both the descent and bottom phases of their dive...
متن کاملBuoyancy Compensation: Use or Abuse
The modern scuba diver has become a slave of the buoyancy compensator. Throughout scuba diving history the diver has had to cope with variations in buoyancy due to suit compression and air usage. During the past five years scores of buoyancy compensation units have appeared on the market. Frequently manufacturers and instructors indicate that the buoyancy compensator is extremely useful for aid...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Robotica
دوره 21 شماره
صفحات -
تاریخ انتشار 2003