Editing Martin XB-16 (section)

==Design and development==
The XB-16 was designed to meet the [[United States Army Air Corps]] (USAAC) request for a bomber that could carry {{convert|2,500|lb|kg|abbr=on}} of bombs {{convert|5000|mi|km nmi|abbr=on}}.

The XB-16 (Model 145A) was to use four [[Allison V-1710]] liquid-cooled reciprocating [[V-engine]]s; contemporary American aircraft used air-cooled [[radial engine]]s.

In [[1935 in aviation|1935]], Martin revised the XB-16 design as the Model 145B. The wingspan was increased from {{convert|140|ft|m|abbr=on}} to {{convert|173|ft|m|abbr=on}}, and a set of V-1710 engines added to the trailing edge. This version had a wingspan 20% greater than that of the [[B-29 Superfortress]], the first operational bomber that would fill the role intended for the XB-16.

The XB-16 was canceled for essentially the same reason that the [[Boeing XB-15]] project was, as it was not fast enough to meet the requirements set by the Army. Since both were canceled around the same time, Martin did not have time to produce an XB-16.