The Bell X-1 was the first manned airplane to exceed the speed of sound in level flight. It was a joint National Advisory Committee for Aeronautics–U.S. Air Force supersonic research project built by Bell Aircraft. It is the first aircraft to have a variable-incidence tailplane, and the first to have an all-moving tailplane as well as a sloped, framed window inside a confined cockpit in the nose.
About Bell X-1 in brief
The Bell X-1 was the first manned airplane to exceed the speed of sound in level flight. It was a joint National Advisory Committee for Aeronautics–U.S. Air Force supersonic research project built by Bell Aircraft. The rocket engine was a four-chamber design built by Reaction Motors Inc. The design was based on the Miles M. 52, a top secret project to develop the world’s first aircraft capable of breaking the sound barrier. The first of the X-planes, a series of American experimental rocket planes designed for testing new technologies, achieved a speed of nearly 1,000 miles per hour in 1948. A derivative of this same design, the BellX-1A, exceeded 1,600 milesper hour in 1954. It is the first aircraft to have a variable-incidence tailplane, and the first to have an all-moving tailplane as well as a sloped, framed window inside a confined cockpit in the nose, with no ejection seat. Its shape closely resembles a Browning. 50-caliber machine gun bullet, known to be stable insupersonic flight. The X-plane was intended to take off from the ground, but the end of the war made the B-29 Superfortress available to carry it into the air. After the rocket plane experienced compressibility problems during 1947, it was modified with a variable incidence tailplane following technology transfer with the United Kingdom. The Bell Aircraft chief test pilot Jack Woolams became the first person to fly the X 1 in 1,2 minutes and 1,500lbf, making the flight time by pressurized with nitrogen, reducing flight time about 1 minutes and 2 minutes by about 1.5 seconds.
The aircraft’s designers built a rocket plane after considering alternatives. Turbojets could not achieve the required performance at high altitude. An aircraft with both turbojet and rocket engines would be too large and complex. After considering hydrogen peroxide monopropellant, and nitethane monopropelledant, the rocket burned ethyl alcohol with water with a liquid oxygen oxidizer, increasing thrust while making the engine lighter, increasing pressure and increasing weight by 2,000 pounds, but the rest of the rest used gas-driven turbopumps, increasing weight and increasing landing pressure by 2,.000 pounds, but increasing landing weight by 1,200 pounds, while increasing thrust by 1,.500 lbf and 1.000 lb, making it lighter and lighter than the XS-1. In principle, the aircraft was, in principle, a \”bullet with wings\”, its shape closely resembling a Browned.50-caliber 50-pound machine gun Bullet, known to be stable in supersonIC flight. In reality, the design was a delta winged type with sloped windows inside a windows-only cockpit, and it had no ejections seat. In 1948, test pilot Chuck Yeager verified it experimentally, and all subsequent Supersonic aircraft would either have anAll-moving Tailplane or be \”tailless\” delta winging types.