The aviation pocket-book for 1918; a compendium of modern practice and a collection of useful notes, formulae, rules, tables and data relating to aeronautics (1918)
Matthews, Richard Borlase, 1878- · London : C. Lockwood and son · leaf 194
his isnot (juite correct. Crippling- Loads upon Struts (R.A.F.) Crippling load in pounds; Where FA F 5,600 lbs. per sq. in. for spruce--6,250 lbs. per sq. in. for ash, C = a constant depending upon the value of ?. The above formula applies to the compression stresses in theinterplane struts, and to… … # L # W^ W/^ ^ 1912EI w per foot run
Aeronautics
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