The Bensen B-12, variously dubbed the Sky-Way or Sky-Mat was an unconventional multirotor developed by Igor Bensen in the United States in the late 1950s. Extremely unorthodox, the design sprang from Bensen's thinking about the engine redundancy necessary to ensure the safe operation of small, personal rotorcraft operating at low altitudes and ...

The B-10 served as the airframe for the B-12, B-13, B-14, A-15 and O-45 designations using Pratt & Whitney engines instead of Wright Cyclones. A total of 348 of all versions were built. The largest users were the US, with 166, and the Netherlands, with 121. The B-10 began a revolution in bomber design.

2022年2月25日 · The B-10 served as the airframe for the B-12, B-13, B-14, A-15 and O-45 models using Pratt and Whitney engines instead of Wright Cyclones. The design consists of fully enclosed cockpits, rotating turrets, retractable landing gear, internal bomb bay and efficient cooling for the engines.

It offered several innovative design features including all metal airframe, enclosed crew positions, deep fuselage, and a retractable undercarriage. Both the Model 123 and B-10 were powered by Wright R-1820-19 Cyclone radial engines. The Martin B-12A shared the extended wings of the B-10 with two Pratt & Whitney R-1690-11 Hornet radial engines.

Martin B-10/B-12 After failing in a number of bomber design competitions in the 1930s, the Glenn L. Martin company designed and built an advanced bomber project as a private venture. This aircraft was known as the Martin 123, and when tested by the U.S. Army in 1932 it was given the experimental designation XB-907.

Specification of Martin YB-12: Two Pratt & Whitney R-1690-11 Hornet air-cooled radial engines, rated at 700 hp at 6500 feet. Maximum speed 212 mph at 6500 feet, 190 mph at sea level. Initial climb rate 1740 feet per minute. An altitude of 10,000 feet could be attained in 10.1 minutes.

She was the first American large-scale all-metal bomber with remote-controlled machine-gun turrets. In total, the American Air Force was armed with 151 aircraft of the B-10 and B-12 types, the vast majority of them had already been decommissioned by the beginning of the war, but several aircraft still managed to take part in the hostilities.

Known in service as the B-10 and B-12, they were initially used for coastal defence duties, some being fitted with skis and a number with twin floats for operations off water. Variants included the YB-12A with 578 kw (775 hp) Pratt & Whitney R-1690-11 radial engines; and the XB-14 with 709 kw (950 hp) Pratt & Whitney Twin Wasps.

The Martin B-10 is a twin-engined medium bomber aircraft produced by the American manufacturer Glenn L. Martin Company. Martin Model 139 is the export model. The Martin B-12 is a slightly different variant of the B-10 which is powered by a …

2018年9月20日 · The Martin B-12 was a modified version of the successful B-10, powered by Pratt & Whitney R-1690 Hornet A engines. The B-10 was the first modern monoplane bomber to enter USAAC service in large numbers. It had a thick mid-mounted wing, with a straight centre section and tapered outer sections.