Official performance test of Martin bomber N.B.S.-1 equipped with two 400 H.P. Liberty "12" engines (flight test branch performance test report no. 58)
United States. Army. Air Service. Engineering Division.
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DescriptionThis document describes the Martin Bomber N.B.S.-1 airplane and gives the results of flight performance tests, including observations made by the test pilots related to taxiing, take-off, landing, balance, maneuverability, accessibility, and adaptability. Also included are images showing the biplane from three different angles.
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