The Bell X-5 was the first aircraft capable of changing the sweep of its wings in flight. It was inspired by the untested wartime P.1101 design of the...

The Bell X-1 (Bell Model 44) is a rocket engine–powered aircraft, designated originally as the XS-1, and was a joint National Advisory Committee for Aeronautics–U...

for the Bell X-1, the first supersonic aircraft, and for the development and production of many important civilian and military helicopters. Bell also developed...

The Bell X-22 is an American V/STOL X-plane with four tilting ducted fans. Takeoff was to selectively occur either with the propellers tilted vertically...

The Bell X-2 (nicknamed "Starbuster") was an X-plane research aircraft built to investigate flight characteristics in the Mach 2–3 range. The X-2 was...

The Bell X-14 (Bell Type 68) is an experimental VTOL aircraft flown in the United States in the 1950s. The main objective of the project was to demonstrate...

with an average rating of 6.5/10. The website's consensus reads: "Led by a franchise-best performance by Tobin Bell, Saw X reinvigorates the series with...

The Bell 505 Jet Ranger X (JRX) is an American/Canadian light helicopter developed and manufactured by Bell Helicopter. The Bell 505 was unveiled at the...

Diego-based biotech firm Illumina Xitami X5, an open-source Web server Bell X-5, an experimental aircraft X5, the IATA code for Afrique Airlines BMW X5...

The Bell X-16 was a high altitude aerial reconnaissance jet aircraft designed in the United States in the 1950s. The designation of X-16 was a cover to...