Sec. 59.8 



PROPULSION DEVICE PERFORMANCE 



337 



Part II of this paper was presented to the lESS 

 on 13 Mar 1956. 

 (34) "Quarter-Wheel Tugs for the Sudan," SBMEB, Deo 

 1955, pp. 705-700. This reference describes the 

 six tugs of the Tagoog class, 125.5 ft long overall, 

 32.0 ft beam, and 3.0 ft draft, driven by a pair of 

 radial-blade sternwheels, one on each quarter. 



59.7 Test Results on Rotating-Blade Pro- 

 pellers. Many open-water tests of rotating-blade 

 propellers, principally of the Kirsten-Boeing and 

 the Voith-Schneider types, have been made by 

 the old Experimental Model Basin and the David 

 Taylor Model Basin at Washington, by the 

 Netherlands Model Basin, and by other testing 

 establishments. Unfortunately, the published 

 results of these tests are rare. The most useful 

 data, although not in the form of the usual 

 characteristic curves, are those presented by 

 Dr. Hans F. Mueller in his paper "Recent 

 Developments in the Design and Application of 

 the Vertical Axis Propeller" [SNAME, May 1955, 

 pp. 4-30]. Two of his graphs are reproduced as 

 Figs. 59. A and 59. B in this chapter. 



Dr. Mueller advises the author [unpubl. Itr. 

 to HES of 4 May 1955] that the pubhcation of 

 open-water test data on rotating-blade Voith- 

 Schneider propellers, corresponding to those 

 mentioned in Sec. 59.3 for screw propellers, were 

 not made available in the technical literature for 

 two reasons. First, those responsible for the 

 development of these devices in the I930's were 

 hesitant to release the data until they had 

 perfected a practical design of rotating-blade 

 propeller which could compete with the best 

 screw propeller. Second, a great deal of the open- 

 water testing with models was done at the Nether- 

 lands Model Basin in Wageningen during the 

 German occupation of that country in World 

 War II. The latter data are in existence but have 

 never been published. 



Dr. Mueller points out that references (1) and 

 (2) which follow may be of help to a designer 

 employing this type of propulsion device. So far 

 as known, these two references have not been 

 translated into English. 



(1) Mueller, H., and Helm, K., "Der Massstabeinfluss 



beim Voith-Schneider-Propeller (Scale Effect En- 

 countered with the Voith-Schneider Propeller)," 

 WRH, 15 Dec 1942, pp. 334-338 



(2) Mueller, H., "tjber das Zusammenarbeiten des Voith- 



Schneider-Propellers mit dem Schiff (On the Inter- 

 action of the Voith-Schneider Propeller and the 

 Ship)," Schiff und Werft, Jun 1944, pp. 113-119. 



A few other references, additional to those 

 embodied in Sees. 15.13, 15.14, and 37.22, are: 



(3) Kempf, G., and Helm, K., "Ergebnisse naturgrosser 



Schleppversuche mit dem Motorschiff 'Augsburg' 

 (Results of FuU-Scale Towing Tests on the Motor- 

 ship Augsburg)," WRH, 15 Oct 1931, Vol. XII, 

 pp. 347-348 



(4) Betz, A., "Grundzatzliches zum Voith-Schneider- 



Propeller (Fundamentals of the Voith-Schneider 

 Propeller)," HPSA, 1932, pp. 161-170 



(5) Mueller, H. F., "Die Steuerkraefte des Voith-Schneider 



Propellers (The Steering Force of the Voith- 

 Schneider Propeller)," WRH, 1 Jul 1938, pp. 202-204 



(6) "Cycloidal Propulsion on Army Vessel {Truman O. 



Olson)," Naut. Gaz., Mar 1950, p. 25. 



59.8 Available Performance Data on Hy- 

 draulic-Jet, Pump- Jet, and Gas-jet Propulsion 

 Devices. It is unusual, yet unfortunate, to find 

 that in a search for performance data on hydraulic- 

 jet propulsion to supplement the descriptions of 

 Sees. 15.8, 32.5, and 34.13, most of the pubUshed 

 data are largely historic. It is known that an 

 English patent was granted to Toogood and 

 Hayes, as far back as 1661 [Schoenherr, K. E., 

 PNA, 1939, Vol. II, p. 122]; also that Benjamin 

 Franklin made a proposal for jet propulsion of 

 a boat in 1775. K. E. Schoenherr states, in the 

 reference cited, that jet propulsion was actually 

 applied by James Rumsey in 1782 to propel an 

 80-ft ferryboat between Washington and Alex- 

 andria, Va. 



Most of the references on the older forms of jet 

 propulsion might almost be termed ancient. The 

 newer references are almost equally remote from 

 the modern (1955) marine architect because most 

 of them are in a classified status. Among the 

 older references are: 



(1) Brin, C. B., "On the Efficiency of Jet Propellers," 



INA, 1871, Vol. XII, pp. 128-149 



(2) White, W. H., "The Water-Jet Propeller," MNA, 



1882, pp. 532-538; MNA, 1900, p. 587ff. These 

 references mention installations on the: 



(a) Waterwilch, 1866 



(b) Swedish torpedo boat, 1878 



(c) British Admiralty torpedo boat, 1881 



(d) German naval craft 



(e) Hydromotor, Fleischer, 1879; Engineering, 

 London, 9 Sep 1881 



(f) American jet-propelled boat. 



(3) "Verso la Soluzione del Problema del la Propulsion 



Idraulica (Toward a Solution of the Problem of 

 Hydraulic Propulsion)," by Dr. Giacomo Biichi, 

 Engineer, La Marina Italiana, Feb 1935, pp. 45-57. 

 ONI, U. S. Navy, Transl. 76 (copy in TMB Ubrary). 



One of the most systematic accounts is recorded 

 by J. Pollard and A. Dudebout, in their "Theorie 



