The Keystone XOK was an American biplane observation floatplane developed for the United States Navy during the early 1930s.

Keystone Aircraft Corporation was an early American airplane manufacturer. Headquartered in Bristol, Pennsylvania, the company was formed as "Ogdensburg Aeroway Corp" in 1920 by Thomas Huff and Elliot Daland, but its name was quickly changed to "Huff-Daland Aero Corp", then to "Huff-Daland Aero Company".

The X-planes are a series of experimental United States aircraft and rockets, used to test and evaluate new technologies and aerodynamic concepts. They have an X designator within the US system of aircraft designations, which denotes the experimental research mission.

美 国资助的技术开发验证飞行器 X-1目的: 研究跨音速飞行, 单位: 贝尔(Bell), 首飞: 1946X-2目的: 超音速飞行的机体结构, 单位: 贝尔(Bell), 首飞: 1955X-3目的: 长时间超音速飞行与钛材料工艺, 单位: 道格拉斯(Do…

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Max Speed: 125 mph: 201 km/h: 108 kt: Ceiling: 14,200 ft: Known serial numbers. A-8357

2024年6月28日 · Experimental aircraft, or X-planes, are built for a wide range of research purposes – technology or concept demonstrators, unmanned test missiles, and even as prototypes. Here is an overview of X-planes researched and tested at NASA’s Armstrong Flight Research Center in Edwards, California.

NASA's X-Planes asks a simple question: What have we gained from it all? To answer this question, the authors provide a comprehensive overview of the X-plane’s long history, from the 1946 X-1 to the modern X-60.

2024年11月18日 · Managed by NASA and the U.S. Air Force, the X-planes serve as flying laboratories that push the boundaries of technology, exploring everything from supersonic and hypersonic speeds to sustainable aviation and VTOL …

The main article for this category is Keystone Aircraft. Wikimedia Commons has media related to Keystone Aircraft. The following 17 pages are in this category, out of 17 total. This list may not reflect recent changes.