336 



HYDRODYNAMICS IN SHIP DESIGN 



Sec. 59.6 



Operation)," Leipzig, 1012, Vol. I, pp. 224-442. 

 A later edition of this book was published in 1932. 



(13) "Experimental Tovvboats," House (of Representa- 



tives), 63rd Congress, 2nd Session, Document 857, 

 1914, Vol. 27. This report gives the results of many 

 comparative tests run at the Univ. of Michigan, 

 Ann Arbor, on models of radial and feathering 

 paddlewheels, with many parameters varied. On 

 p. 15 of the report there are listed ten conclusions 

 drawn from an analysis of these paddlewheel tests. 



(14) Bragg, E. M., "Feathering Paddle-Wheels," SNAME, 



1916, pp. 175-180 and Pis. 90-98. It is believed that 

 many of the data and charts of this report were 

 based upon the work described in the preceding 

 reference. 



(15) Sehaffran, K., "Modellversuche mit Schaufolrad- 



Propellern (Model Tests with Paddle Propulsion 

 Devices)," STG, 1918, Vol. 19, pp. 475-520. 

 Describes tests made on a number of models of 

 feathering wheels, together with correlations with 

 trials on several paddle steamers, the Hugo Marcus 

 on the Elbe and the Thommen on the Danube. 



The efficiencies of the model paddlewheels do 

 not exceed 0.50 in any case. 



Fig. 7 on p. 486 is a construction drawing of a 

 pair of paddlewheels side by side on a single shaft, 

 each pair with its own feathering mechanism. 



(16) Sadler, H. C, and Kirby, F. E., "Design of Pa.ssenger 



Vessels for the Great Lakes," SNAME, 1925, pp. 

 101-108. PI. 81 shows the design and dimensions 

 of the feathering paddlewheels for the large 

 vessels of the Greater Detroit class. 



(17) Schoenherr, K. E., "Model Tests with Paddlewheels," 



EMB Rep. 176, Sep 1927. Gives curves of efficiency 

 1)0 and characteristic curves for a number of 

 variations of radial wheels onl^r. 



(18) Zilcher, R., "Leistung und Wirtschaftlichkeit von 



Flusschleppern verschiedener Antriebsart (Power 

 and Economy of River Tugboats with Various 

 Kinds of Propulsion)," WRH, 22 Dec 1927, pp. 

 556-561 



(19) Baird, G., "Notes on the Development of Tug-Boat 



Machinery During the Past Forty-Six Years," 

 NECI, 1935-1936, Vol. LII, pp. 89-102 and 

 D19-D22. This paper depicts, on pp. 98-99, two 

 tug paddlewheels of the feathering type, with 6 

 and 8 blades, respectively. 



(20) Suberkriib, F., "Der Radschiffsantrieb (Paddlewheel 



Ship Propulsion)," Schiffbau, 15 Mar 1939, pp. 

 115-119 



(21) Gras, V., "Dieselelektrische Schaufelrad-Schlepper 



Szechenyi (Diesel Electric Paddle Tug Szechenyi)," 

 WRH, 15 Aug 1939, pp. 247-256. Figs. 3, 4, and 

 15 on p. 250 show a direct electric-motor drive to 

 the paddlewheel shafts. There are double paddles on 

 each wheel, end to end. 



(22) Blumerius, R., "Das Diesekadschiff (The Diesel 



Paddlewheel Ship)," Schiffbau, 15 Sep 1939, pp. 

 326-327; 15 Oct 1939, pp. 349-357. Fig. 21 on 

 p. 354 gives the lines of the Danube River vessel 

 Stadt Wien, which has a peg-top underwater mid- 

 ship section. 



(23) Kretzschmar, F., "Einige Schiffbautechnisclie mit- 



tcilungen aus der Schweiz (Some Information 

 about Shipbuilding Progress in Switzerland)," 

 Schiff und Werft, 1 Mar 1943, pp. 74-77 



(24) Gardner, J. H., "The Development of Steam Naviga- 



tion on Long Island Sound," SNAME, HT, 1943, 

 pp. 97-134. 



(25) Helm, K., "tJber den Heutigen Stand der Schaufel- 



radfrage (On the Present Status of the Paddle- 

 wheel)," HSVA Rep. 881, 26 Jun 1944 (copy in 

 TMB library). This report contains a treatise on 

 paddlewheel developments and includes curves for 

 paddlewheel design. 



(26) "The Bristol Queen: A Modern Paddle Steamer," 



SBSR, 6 Mar 1947, pp. 224-227. The article gives 

 photographs of the model feathering paddlewheels 

 tested and of the self-propelled model of this vessel. 



(27) Barr, G. E., "The Histor3r and Development of 



Machinery for Paddle Steamers," lESS, 20 Nov 

 1951, Vol. 95, Part 3, pp. 101-148. Paddlewheels 

 are discussed on pp. 128-130, with numerous 

 illustrations. There is a list of 7 references on pp. 

 138-139. 



(28) Deetjen, R., "Erfahrungen mit einem speziellen 



Schaufelradantrieb fiir verkrautete Gewasser (E,x- 

 perience with a Special Paddlewheel for Use in 

 Water with Weeds)," Schiff und Hafen, Mar 1952, 

 pp. 80-81 



(29) Henschke, W., "Schiffbautechnisches Handbuch 



(Shipbuilding and Ship Design Handbook)," 

 Berlin, 1952, pp. 193-195 



(30) Ostend-Dover Paddle Packet Marie Henriette of 



1893, SBSR, 15 May 1952, p. 630 



(31) Gebers, F., (with a contribution by F. Horn), "Daa 



Schaufelrad im Modellversuch: Zwei Berichte der 

 Schiffbautechnischen Versuchsanstalt, Wien (The 

 Paddlewheel in Model Test: Two Reports of the 

 Vienna Model Basin)," Vienna, Springer, 1952 

 (book in German). 



(32) Krappinger, O., "Schaufelradberechnung (Paddle- 



wheel Calculation)," Schiffstechnik, Aug 1954, pp. 

 30-36. This paper gives a number of graphs 

 embodj'ing the results of model tests, in a form 

 useful to the designer. No translation known to be 

 available in 1955. 



(33) Volpich, H., and Bridge, I. C, "Paddle Wheels: 



Part I, Preliminary Model Experiments," JESS, 

 1954-1955, Vol. 98, Part 5, pp. 327-372. A bibli- 

 ography of 8 items appears on p. 359, several of 

 which are listed here. 



The paper gives a brief general history of paddle 

 propulsion and paddle research with a comment on 

 the scarcity of experimental data for wheel design 

 and analj'sis. Important deviations from the laws 

 governing screw-propeller performance are noted 

 and the purpose of the present investigation put 

 forward. The apparatus used in testing two sizes 

 of model wheel is described. The results of experi- 

 ments with a radial and a feathering 9-float wheel 

 at one immersion are given in detail for both wheel 

 sizes and are discussed, together with methods of 

 presentation. As the results are incomplete for 

 design purposes, proposed future work is outlined; 

 this will be published in a second paper. 



