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Field Research Facility
Buildings Vehicles Staff Employment Travel info Tours DATA Publications User/Visitor Info WIS Brunswick Cape Fear Sed Mound DELILAH DUCK94 SandyDuck RIB S.T.O.R.M. SHOWEX Sediments Oregon Inlet Hotspots |
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FRF Vehicles Coastal Research Amphibious Buggy (CRAB)
The CRAB consists of a tripod of 0.2 m schedule-80 aluminum tubing, connected at the base
by horizontal members 2.1 m (7 ft) above the ground, and an operations platform
10.7 m (35 ft) above the ground. Power is supplied by a 60-hp turbo charged Volkswagen
diesel engine on the deck
which drives a variable volume hydraulic pump. This pump
transfers hydraulic fluid at 800 psi or higher to hydraulic motors at each of the wheels.
The variable stroke feature of the pump allows an
infinitely variable gear ratio in either
forward or reverse and constant engine speed. For strength and corrosion resistance, all
hydraulic lines are stainless steel, except for short flexible sections at the front wheel,
which is used for steering.
Click to view a CRAB Video.
Movie viewers may be obtained from www.real.com |
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Sensor Insertion System (SIS)![]() Instruments to measure the waves, currents, and sediment movement are mounted on the boom of the SIS and lowered into the water. Some of these instruments are pressure gauges, current meters, and sediment transport sensors. These data are important to coastal engineers because very little is known about how sand is moved during storms, and it is during big storms that significant beach erosion takes place. The SIS is also an ideal tool for testing and evaluating different instruments.
Click to view a SIS Video.Movie viewers may be obtained from www.real.com |
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All-Terrain Forklift![]() The FRF's all-terrain forklift has a 2700 kg (6000 lb) lift. It is used for carrying instruments, cables, and boats to the beach.
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