The Boeing B-47 Stratojet (Boeing company designation Model 450) is a retired American long- range, six-engined, turbojet -powered strategic bomber designed to fly at high subsonic speed and at high altitude to avoid enemy interceptor aircraft.

Jan 10, 2012 · Specifications of the Boeing XB-47D Stratojet: Powerplant: Two Wright YT49-W-1 turboprops, 9710 shaft hp each. Two General Electric J47-GE-23 turbojets, 5800 lbs. static thrust each. Performance: Maximum speed: 597 mph (519 knots) at 13,500 feet. Service ceiling: 33,750 feet. Initial climb rate: 2910 feet per minute. Dimensions:

The XB-47D XB-47D During the late 1940s and early 1950s, the USAF was interested in determining the feasibility of producing a high speed, long-range turboprop-powered bomber. In support of this goal, the Air Force requested that a pair of B-47Bs be converted

The XB-47 is a six-engine, swept wing bomber built by Boeing Airplane Co. at Seattle, known as the Stratojet, it is the Air Force’s first bomber designed for speeds in excess of 600 miles an hour. The XB-47 is the plane to which Air Force Secretary Symington referred last fall when he mentioned a jet bomber running away from jet fighters.

Feb 8, 2024 · The video discusses the development of the XB-47D medium bomber by Boeing Company in the early 1950s, which aimed to address the issue of excessive fuel consumption in early jet aircraft by...

Apr 18, 2019 · As composite-powered demonstrators, the two four-engine XB-47D airplanes were each powered by two 8,500 shaft horsepower Wright YT49-W-1 turboprop engines and two non-afterburning 5,910 pounds thrust General Electric J47-GE-23 turbojet engines.

The XB-47D was essentially developed to test a jet engine-prop combination and to provide data on the installation of turboprops in swept-wing aircraft.

A research version of the B-47, named the XB-47D, was fitted with two jet engines and two Curtis-Wright T-49 turboprops sporting four-bladed propellers each 15 feet in diameter. Used as an experimental aircraft, the XB-47D was never placed in production.

Aug 27, 2017 · The other four-engined model, the XB-47D, had two turboprops and two turbojets. This would have led to the un-built B-55, not mentioned in this book but which is in Boyne’s B-52 book.

Two EB-47s were converted from 1951 to testbeds for the Wright YT49 turboprop engine, two YT49s replacing four of the B-47s' six jets. The first flight was not made until 1955. The XB-47D reached a speed of 597 mph (961 km/u), but the YT49 …