Martin XLB-4

The Martin XLB-4 was a 1920s proposal for a light bomber by the Glenn L. Martin Company.

Design and development

The XLB-4 would have been a biplane bomber of all metal construction, powered by two Pratt & [Whitney R-1690 Hornet] radial engines. The United [States Army Air Corps] ordered a single prototype serialled 27-332, but the aircraft was cancelled because the USAAC leadership was lukewarm about experimenting with all-metal aircraft.

Specifications (XLB-4 estimated)