25 



REGULAR SERIES 



432. Bureau of Aeronautics Design No. 142 Airplane Hull - Experiments with a 



Model of - Bureau of Aeronautics Project No. 3173. Jun 1937- 9 PP. » 6 



figS. Distributed only upon authorization of Bureau of Aeronautics. 



433. A Comparison of Three Methods of Rolling Ship Models, by J.G. Thews and 



L. Landweber. Jun 1937. 19 pp., 9 figs. 



434. Bureau of Aeronautics Design No. 143 - Class VPB Airplane Hull - Exper- 



iments with a Model of. Jun 1937- 9 PP- , 6 figs. 



435. Model No.- 3324 - Additional Test - Longitudinal Steps (Basin Design). 



Jun 1937. 10 pp., 6 figs. 



436. Curtiss Design Seaplane Float - Experiments with a Model of. Jun 1937- 



5 pp. » 2 figS. Distributed only upon authorization of Curtiss Engineering Corporation. 



437. Mark XIV Float - Experiments with a Model of - Bureau of Aeronautics 



Project NO. 3199- Aug 1937- 10 pp., 6 figS. Distributed only upon author izati 01 

 of Bureau of Aeronautics. 



438. X0SU-1 Airplane Float - Pointed Step Type - Experiments with a Model of. 



Aug 1937- 9 PP., 6 figs. 



439. Model XPB2Y-1 Airplane Hull - Additional Tests with Modified Afterbody - 



Bureau of Aeronautics Project No. 3217- Aug 1 937 - 12 pp., 8 figs. Dis- 

 tributed only upon authorization of Bureau of Aeronautics. 



440. The Effect of Joint Eccentricity on the Ultimate Strength of Plating in 



Compression, by John Vasta. Oct 1937- 5 PP> , 3 figs. 



441. Investigation of Elastic Characteristics of Box Girders, by F.G. Ebel. 



Oct 1937- 13 pp., 9 figs. 



442. The Effect of the Turn of the Bilge on Roll Damping, by J.G. Thews and 



L. Landweber. Jan 1938. 8 pp., 9 figs. 



443. Model XPB2Y-1 Airplane Hull - Additional Tests with Modified Afterbody - 



Bureau of Aeronautics Project No. 3139. Feb 1938. 8 pp., 6 figs. Dis- 

 tributed only upon authorization of Bureau of Aeronautics. 



444. Experiments with a Model of Bureau of Aeronautics Mark XV Float - Proj- 



ect NO. 3276. Feb 1938. 11 pp., 6 figS. Distributed only upon authorization of 

 Bureau of Aeronautics . 



445. The Ultimate and Critical Compressive Strength of Tee Stiffeners,. by 



John Vasta. Feb 1938. 19 pp., 10 figs. 



446. The Effect of Openings on the Ultimate Tensile Strength of Flat Plates. 



Mar 1938. 12 pp., 5 figs. 



448. XPB2Y-1 Airplane Hull - Tests on Original Lines with Modified Main Step. 



May 1938. 8 pp. , 5 figS. Distributed only upon authorization of Bureau of Aero- 

 nautics. 



449. Experiments with Vibration Neutralizers, by R.T. McGoldrick. May 1938. 



24 pp., 15 figs. 



