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dc.creatorNiles, A. S.en_US
dc.date.accessioned2017-09-09T19:31:51Z
dc.date.available2017-09-09T19:31:51Z
dc.date.created1928-08-15en_US
dc.identifier.urihttp://hdl.handle.net/11200/48959
dc.descriptionThe study discussed in this report was made to obtain data on the relative merits of different types of metal wing spar construction, and to develop methods to be used in the design of those types which the tests indicated to be the most satisfactory for use in practical design. Although it is intended to cover ultimately the entire range of airplane sizes, the work covered by this report pertains only to spars of a size suitable for use in single bay externally braced observation airplanes. This is the second report on the spar tests covered, the earlier report being published as Air Corps Information Circular, Vol. VI, No. 590 (Serial Report 2665), "Progress Reports on Experimental Metal Spars," by A. S. Niles and E. C. Friel. The present report includes not only the more important results given in the previous report, but also gives the results of tests to determine the quality of the material in the spars tested, computations of unit stresses developed, geometrical properties of the cross sections and similar quantities, studies of the stiffness characteristics of the spars, an investigation of the characteristic types of failure, the development of methods to be used in the design of the two types which gave the most favorable test results and revised recommendations regarding future work in the study of the problem of metal construction.en_US
dc.formatPDFen_US
dc.publisherWashington, D.C. : Chief of Air Corpsen_US
dc.relation.ispartofseriesAir Corps information circular (Aviation) ; v. 7, no. 622en_US
dc.relation.ispartofseriesAir Corps technical report ; Serial no. 2895en_US
dc.subjectAeronautics--Researchen_US
dc.subjectAeronautics--Systems engineeringen_US
dc.subjectAirplanes--Design and constructionen_US
dc.subjectAirplanes--Parts--Testingen_US
dc.subjectAirplanes--Wingsen_US
dc.subjectStrength of materialsen_US
dc.subjectStrains and stressesen_US
dc.titleTests on 6 1/4 inch metal spars. Appendix I. Logs of tests on 6 1/4 inch spars. Appendix II. Requirements for experimental metal spars for pursuit and observation loadings (airplane branch report)en_US
dc.typeTexten_US


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