Papers On Navy C-P Propeller Program And Spray Patterns Of Jet Thrusters Discussed At Joint SNAME Chesapeake/ASNE Meeting
The Chesapeake Section of The Society of Naval Architects and Marine Engineers and the Flagship Section of The American Society of Naval Engineers held a joint meeting recently at the Officers Club of the Bethesda Naval Medical Center. The meeting featured the presentation of two papers — one on the U.S. Navy controllable-pitch propeller program, and the other a student paper on spray patterns produced by jet thrusters.
The presentation of papers followed a social hour and dinner attended by about 150 members.
The first part of the technical session was moderated by G. Boatwright of NAVSEC. The paper was entitled "U.S. Navy Controllable Pitch Propeller Programs," and was authored by Maurice Hauschildt, Richard Petros and Joseph Angelo. Mr. Hauschildt presented the paper, which described the U.S. Navy controllable- pitch propeller research and development program of the late 1960s and early 1970s. It discussed the failure of the USS Patterson (FF 1061) and the USS Barbey (FF-1088) research propellers, and the redesign and test of the Barbey propeller. It also discussed the Spruance (DD 963) propeller land-based tests and sea trials. The application of the data obtained from the R&D program to the DD 963, FFG 7 and future Navy designs was also discussed.
A discussion period followed the presentation of the paper.
The discussers included Capt. W.
Wvatt, DD 963 Program Manager, R. Rockwell, DTNSRDC, C. Noonan, DTNSRDC, and D. Ridley, Bird-Johnson Co.
The second paper, "Spray Patterns Produced by Vertical Disk Thrusters Above Water Surfaces," was written by George E. Selecman and Alan N. Jennings, both of whom are students in the Aerospace and Ocean Engineering Department of Virginia Polytechnic Institute and State University.
Jon Buck acted as moderator for this paper, which was presented by Mr. Selecman.
The paper presented an investigation of spray patterns produced by vertical disk thrusters over water surfaces. This work has application in understanding the spray which is likely to be produced by VTOL aircraft operating over water. The tests were conducted at DTNSRDC and at VPI. Qualitative analysis of test films from DTNSRDC led to experiments which showed a strong dependence of droplet size on Weber Number, Froude Number and the height of the disk thruster above the water surface. Dimensional analysis was used to devise a mathematical relationship between the most probable droplet size and the above mentioned parameters.
Other stories from July 1977 issue
Content
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- Proposal Calls For Ship's Spare Parts To Be Based Ashore page: 4
- Two Arabian Projects Totaling $80 Million To Great Lakes Dredge page: 6
- Raytheon Marine Opens New York Office page: 6
- The LNG Aquarius Is The First Of Twelve LNG Tankers Being Built By General Dynamics page: 7
- G.E. Marine Gas Turbines To Power German Frigate Ships page: 7
- ABS To Consolidate Headquarter Operations page: 8
- Western Union Int'l To Market New MARISAT System page: 8
- Skagit Corporation Appoints F.K. Weimann page: 8
- National Supply Builds 15,000-Psi Subsea BOP And Wellhead System page: 9
- Carrington Slipways Receive Order To Build Offshore Supply Vessel page: 10
- MarAd Approves Loan To Finance Bulk Carrier page: 10
- Gulf Trading Names Kenneth L. Hawthorne page: 10
- Mamo II Joins Dillingham Fleet In Hawaii page: 10
- Lantana Boatyard To Build 134-Foot Alaskan Landing Craft Of Krogen Design page: 10
- New Zealand Awards Multimillion-Dollar Contract To Sembawang page: 12
- Seven Seas Towing Names Capt. Cleveland Operations Manager page: 12
- Clay Chiles Awards Marathon LeTourneau 150-44-C Rig Contract page: 12
- Multipurpose/Container Ships Ordered From Korea Shipbuilding page: 14
- Propulsion Systems, Inc. Expands Thruster Line page: 14
- San Francisco Hosts SNAME Spring Meeting And STAR Symposium page: 14
- Hillman Transportation Names Kenny President page: 16
- Harland And Wolff Belfast Yard Building 333,000-Ton Tankers page: 16
- 'Tina' Is A Happy Blend Of Innovations And Proven Designs page: 17
- General Dynamics Awarded $354-Million Sub Contract —Option For Two More page: 17
- Thunderbolt Marine Industries Launches Twin 96-Foot Tugs For Panama Canal Services page: 17
- Moore McCormack And Aeron Marine Apply To Transport Oil For SPR page: 17
- Scottish Offshore Opens Texas Office page: 18
- New Vessel Joins Circle Line Fleet page: 18
- Electro-Nav Now Sole U.S. Distributor Of BEN Speed Logs page: 18
- Jeffboat Starts Work On A Second Ferry For The Mississippi River Bridge Authority page: 20
- Robert L. Hague Post To Honor Admiral Rea page: 22
- New 75-Foot Marine Lubricants Supply Vessel page: 23
- International Paint Names Donald S. Otto page: 23
- Anixter-Mark Announces Five-Way Ratchet Mount page: 23
- SNAME Pacific Northwest Section Holds Joint Meeting With ASNE page: 24
- President Carter Presents $25,000 Prize For Energy-Saving Device page: 24
- MacGregor Publishes Ro-Ro Encyclopaedia page: 25
- Avondale Launches First Of Four Tankers To Carry Alaskan Oil For Sohio page: 26
- New Shipyard Operating North Of Arctic Circle page: 26
- Farrell Lines And General Electric Credit Create A Maritime First page: 28
- Dravo SteelShip Expands Facilities page: 28
- USCG Certified No-Discharge Oxidizing Toilet Now Available page: 28
- Worthington Compressors Announces New Marine And Navy Sales Force page: 34
- Carrington Slipways Building Cement Carrier page: 34
- Tragosa Charters Seven Tidewater Vessels For Offshore Mexico page: 34
- De Laval Separator Issues Marine Brochure page: 34
- Dutch And American Firms To Jointly Build Hopper Dredge In U.S.A. page: 35
- R.J. Reynolds Industries Elects McEvoy To Board page: 35
- American Abrasive Metals Announces New Non-Slip Roll-On Safety Coating page: 35
- Marine Surveyors To Hold 19th Marine Conference In New York In October page: 36
- Boiler And Engine Room Controls page: 37
- Magnavox Introduces Marisat Shipboard Communications Terminal page: 38
- ASNE Charleston Section Reports Activities page: 38
- Pacific NW Section Hears Two Papers At Annual Spring Meeting page: 39
- Omnithruster Describes Maneuvering System In New Brochure page: 40
- Port Of New York Maritime Association Elects Officers page: 40
- Cargo Preference Measure Vital To U.S. Shipbuilding page: 41
- Delta Shipyard Delivers 120-Foot Seismic/Utility Vessel To Shell Oil page: 41
- Donald Staples Named Comptroller Of GM's Electro-Motive Division page: 42
- Peterson Maritime Services Open Office In Houston page: 42
- Zapata Marine Realigns Marketing Group Posts page: 42
- Over 1,500 Attend ASNE Annual Meeting page: 42
- Raytheon Introduces New Radiotelephone page: 43
- Seaworthy Engine Systems Appoints Jack E. Horner page: 43
- New Luxury Hotel Barge Begins Thames Cruises page: 43
- NDTA New York Chapter Elects Captain Fritzke page: 44
- National Maritime Council Elects Barker Chairman page: 44
- Stow Manual Contains Information On Solving Valve Problems page: 45
- General Regulator Opens East And West Coast Sales/Service Offices page: 45
- Lincoln Warren Named ODECO Vice President Oil & Gas Exploration page: 45
- Naval Engineers Announce Combat Systems Symposium Set For Oct. 12-13 In Maryland page: 46
- Papers On Navy C-P Propeller Program And Spray Patterns Of Jet Thrusters Discussed At Joint SNAME Chesapeake/ASNE Meeting page: 46
- Mississippi Marine Towboat Delivers Harbor Boat To Union RR page: 47
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- Equitable Delivers Ferry To State Of No. Carolina page: 48
- Crowley Maritime Appoints Richard Simpson And Alan Cavis To Caribbean Division Posts page: 49
- SNAME Chesapeake Section Elects Officers- Hears Paper On Domestic LNG Vessel Construction page: 49
- SNAME Los Angeles Section Honors Past Chairmen —Discusses Paper On Slow-Speed Marine Diesels page: 50
- M / V Gulf W h a l e Christened At Q u a l i t y Equipment Y a r d For O p e r a t i o n By Seven Seas T o w i n g page: 51
- General Cargo Ships Becoming Obsolete page: 52
- Kevin Patrick Smith Forms Supplier's Marine page: 52
- Trus Joist Brochure Describes Revolutionary Scaffold Plank page: 53
- Mar A d Awards Contract To Study Perishable Commodities page: 54