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Low Pressure Tubeaxial Fan Bulletin Available From Industrial Air, Inc. A new bulletin, "Low Pressure Tubeaxial Fans," is now available from Industrial Air, Inc., Amelia, Ohio. Four fan models are illus- trated and described. These in- clude direct-drive or belt-driven fans with cast aluminum or steel fixed-pitch propellers. Adjustable- pitch cast aluminum propellers are available as an option. The fans are specifically de- signed to move large volumes of air at static pressures of 1 inch or less, and are particularly ef- ficient in this range. Economical in first cost, they are also eco- nomical to operate. As is typical of other Industrial Air fans, the bulletin reports, these low-pressure tubeaxial mod- els have unusually heavy-duty shafts and bearings for long and trouble-free life. All have solid- welded construction. In belt-driven models, bearings, belts, and mo- tors are out of the airstream. The fans range in size from 15 inches to 96 inches, with capaci- ties from 1,000 to 100,000 cfm. Copies of the new bulletin, "Low Pressure Tubeaxial Fans," Our 470 acre yard has everything needed for complete ship maintenance...and then some. It starts when one of our tugs picks up your ship and helps bring it into one of our nine piers, which range up to 1200 feet. Or into one of our deep-draft graving docks which range from 650 to 1600 feet with beams of 92 to 250 feet. You need good people We then put the most experienced ship repair people in the world to work. We have an engineering and design staff of 3,000...a total work force of 25,000 conscientious, highly skilled workers, many of them trained in our own apprentice and welding schools...all of them skilled in some area of shipbuilding, repairing or maintenance. You need good facilities In our new commercial facility, we utilize the most modern equipment and state-of-the art methods to provide routine maintenance, extensive machinery and hull repairs, jumbo/conversion or modification to IMCO standards. Whether it's a luxury cruise ship, fully loaded containership, a supertanker or any other type of vessel, we have a berth for it. We also have a 300,000 square foot machining center, a 23-story gantry crane able to lift 900 tons, a complete pattern shop and a complete materials testing laboratory...plus our own foundry that specializes in pouring stern frames, rudders and valve bodies as well as other steel, stainless steel and non-ferrous castings...and a steel fabrication center with over 500 machines designed for the precision preparation of steel. To do your job right, you need Newport News Shipbuilding Our people and our facilities are key reasons, but there's more. Like our distinguished record of turn- around times...our nearly 100 years of ship repair experience...and, most important, our pride in every job we do, big or small. Yes, everything needed to repair your ship is on our 470 acres. Learn more about us. Write or call for our full-color brochure, "Commercial Shipbuilding and Ship Repair". Newport News iTENNECOJ A Tenneco Company Newport News, Virginia 23607 (804) 380-2600/Telex 82-3453 TWX 710-880-0007 are available on request from Tom Kanis, Industrial Air, Inc., P.O. Box 215, Amelia, Ohio 45102. Bell-Halter Delivers Surface Effect Ship To Corps Of Engineers The Rodolf, a 48-foot surface- effect ship built by Bell-Halter, New Orleans, La., for the Port- land (Oregon) District of the U.S. Army Corps of Engineers, has be- gun a Gulf and Atlantic Coast tour to demonstrate its opera- tional and hydrographic survey- ing capabilities. The Bell-Halter built surface-effect ship Rodolf, shown demonstrating her high speed and minimal wake, is powered by two Detroit 8V-92N engines. Her lift fan is driven by a Detroit Diesel 4-53N. As a result of the surface- effect ship's (SES) unique design, the Rodolf is expected to signifi- cantly improve hydrographic and surveying technology through its higher speed capabilities and min- imal wake. The boat rides on a cushion of air contained by cata- maran-style sidehulls and flexible bow and stern seals. When cruis- ing, the center portion of the hull is clear of the water and sup- ported by the air cushion, there- by reducing resistance, enabling higher speed and improving ride and stability qualities. The hull, fabricated of all- welded marine alloy 5086 alumi- num, was designed with special attention given to the hydrody- namic/acoustic effects on the sci- entific survey equipment. Liberal use was made of sound-dampen- ing materials and vibration ab- sorbing mounts. The basic craft design is quite flexible, making it suitable for other applications such as a pilot boat, a search and rescue craft, or a harbor patrol boat. Two 350-hp Detroit Diesel 8V- 92N marine engines power twin four-bladed propellers, and a De- troit 105-hp 4-53N marine diesel drives the 30-inch-diameter Bell centrifugal lift fan. The widely spaced propellers make the craft highly maneuverable at all speeds, both cushionborne and hullborne. The 35-mph all-weather survey boat was named for Frederick W. Rodolf, former Chief, Hydro- graphic Survey, Portland District. Bell-Halter is a joint venture formed by Bell Aerospace Tex- tron, division of Textron, Inc., and Halter Marine, Inc. to design, build, and market air-cushion as- sisted craft for commercial serv- ice. 20 Maritime Reporter/Engineering News
