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Complete tank tests of two flying-boat hulls with pointed steps - N.A.C.A. Models 22-A and 35This note presents the results of complete tank test of N.A.C.A. Models 22-A and 35, two flying-boat hulls of the deep pointed-step type with low dead rise. Model 22-A is a form derived by modification of Model 22, the test results of which are given in N.A.C.A. Technical Note No. 488. Model 35 is a form of the same type but has a higher length-beam ratio than either Model 22 or 22-A. Take-off examples are worked out using data from these tests and a previous test of a conventional model applied to an arbitrary set of design specifications for a 15,000-pound flying boat. The comparison of these examples shows both pointed-step models to be superior to the conventional form, and Model 35 to be the better of the two. Model 35 is applied to a hypothetical 100,000-pound flying boat of the twin-hull type and performance calculations are made both for take-off and range. The results indicate that the high performance of this type of hull will enable the designer to use higher wing and power loadings than are found in current practice, with a resulting increase in range and pay load.
Document ID
19930081263
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Shoemaker, James M
Bell, Joe W
Date Acquired
September 6, 2013
Publication Date
September 1, 1934
Report/Patent Number
NACA-TN-504
Accession Number
93R10553
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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