Reverse Gear Research Articles

The Friction Clutch Reverse-Reduction Gears for the GTS Adm. Wm. M. Callaghan

The design and performance of the 20,000-hp reverse-reduction gears and clutches installed in the GTS Adm. Wm. M. Callaghan, the first large high-speed cargo ship designed for gas-turbine propulsion, are reviewed. Details of design, component testing, and performance calculations and the results of sea trials and service experience are presented. The successful operation of the reverse gears indicates that similar applications for gas-turbine propulsion of large merchant vessels can be undertaken.

Selection of Power Plants for Yachts

Considerations governing selection of power plants for yachts include determination of power for speed and performance desired. This, in turn, requires determination of the best compromise on shaft revolutions compatible with limitations of propeller diameter and possible effects of cavitation. The problem as to whether to use diesel or gasoline engines is also investigated. Curves are given which give general criteria for estimating power over a large range of speeds. Accessories including reverse gears, reduction gears, and their mode of control are discussed. Propeller design in reference to engine rating is investigated, it being pointed out that on many current engines a propeller sized for maximum power and revolutions will be much too small for the horsepower available at a continuous rating.

Development of a High-Speed Reverse Gear for Marine Gas Turbine

This paper describes the operation and salient design features of a high-speed reversing gear used with the Solar 1100-hp Saturn gas-turbine engine. Development history leading to successful marine applications is reviewed.

No reverse gear

Journal of the American Oil Chemists' SocietyVolume 38, Issue 9 p. A6-A6 News No reverse gear James E. McHale, James E. McHaleSearch for more papers by this author James E. McHale, James E. McHaleSearch for more papers by this author First published: 01 September 1961 https://doi.org/10.1007/BF02631915 Merrill Lynch, Pierce, Fenner & Smith, Inc. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume38, Issue9September 1961Pages A6-A6 RelatedInformation

The younging of electorates.

As the bumper crop of babies born since World War II matures into 21-year-old voters, the electorates of Western nations will start younging. The proportion of older voters, which has risen rapidly in the 20th century, will reach a peak and then decline. The terrific pressure on political leaders to provide security for the rising tide of oldsters —and, perhaps, to advance other welfare state programs—will wane. The accent will again be on youth, as one of the great forces which produced the trend toward the welfare state goes into reverse gear. Consider voters 50 years of age and over as the older voters and those below age 50 as the younger voters. How soon will the percentage of older voters start to decline in some of the leading Western nations? The table shows the peak year and the shift in the number of older voters per 100 voters since