File:Douglas X-3 NASA E-17348.jpg

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摘要

描述Douglas X-3 NASA E-17348.jpg	English: This in-flight NACA High-Speed Flight Station photograph of the X-3 Stiletto illustrates the aircraft’s long slender fuselage and the small wings. The X-3 Stiletto was a single-place jet-powered research aircraft manufactured by the Douglas Aircraft Company. The X-3's primary mission was to investigate the design features of an aircraft suitable for sustained supersonic speeds, which included the first use of titanium in major airframe components. It was delivered to the NACA High-Speed Flight Station in August of 1954 after some Douglas and Air Force evaluation testing.
日期	1950年代 date QS:P,+1950-00-00T00:00:00Z/8
来源	https://www.dfrc.nasa.gov/Gallery/Photo/X-3/Large/E-17348.jpg
作者	NASA

本图像或视频收录于美国国家航空航天局（NASA）阿姆斯特朗飞行研究中心（Armstrong Flight Research Center），其照片编号是： E-17348

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许可协议

	本文件完全由NASA创作，在美国属于公有领域。根据NASA的版权方针，NASA的材料除非另有声明否则不受版权保护。（参见Template:PD-USGov/zh、NASA版权方针页面或JPL图片使用方针。）
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	日期/时间	大小	用户	备注
当前	2024年7月6日 (六) 19:41	3,000 × 2,143（3.08 MB）	Caddyshack01	Cropped 20 % vertically, 20 % areawise using CropTool with lossless mode.
	2024年7月6日 (六) 19:38	3,000 × 2,670（3.59 MB）	Caddyshack01	Higher resolution and better quality image
	2005年7月16日 (六) 16:44	1,144 × 892（160 KB）	Stahlkocher	This Image has usage restrictions, see NASA copyright policy for details -- Douglas X-3 Source: NASA {{PD}} Category:Douglas X-3\

文件用途

以下3个页面使用本文件：

全域文件用途

以下其他wiki使用此文件：

ar.wikipedia.org上的用途
- قائمة طائرات - إكس
- دوغلاس إكس-3 ستيليتو
ca.wikipedia.org上的用途
- Usuari:Mcapdevila/Avions X
- Avions X
cs.wikipedia.org上的用途
- Douglas X-3
de.wikipedia.org上的用途
- Douglas X-3
- Zweistrahliges Flugzeug
en.wikipedia.org上的用途
- List of X-planes
- Douglas X-3 Stiletto
- List of NASA aircraft
es.wikipedia.org上的用途
- Ala (aeronáutica)
- Douglas X-3 Stiletto
- Anexo:Aviones X
fa.wikipedia.org上的用途
- هواپیماهای ایکس
fi.wikipedia.org上的用途
- Douglas X-3 Stiletto
fr.wikipedia.org上的用途
- Edgar P. Jacobs
- Avions-X
- Douglas X-3 Stiletto
- Utilisateur:Darkside1984
- Liste des aéronefs des forces armées des États-Unis
he.wikipedia.org上的用途
- X-3
hu.wikipedia.org上的用途
- X–3 Stiletto
- Az X-sorozat kísérleti repülőgépei
id.wikipedia.org上的用途
- Douglas X-3 Stiletto
it.wikipedia.org上的用途
- Aerei X
- Douglas X-3 Stiletto
ja.wikipedia.org上的用途
- Xプレーン
- X-3 (航空機)
- 1952年の航空
ko.wikipedia.org上的用途
- 사용자:아우드/항공기사진
- X플레인 목록
lt.wikipedia.org上的用途
- X-lėktuvai
nl.wikipedia.org上的用途
- Douglas X-3 Stiletto
no.wikipedia.org上的用途
- Douglas X-3
pl.wikipedia.org上的用途
- X-plane
pt.wikipedia.org上的用途
- Douglas X-3 Stiletto
ru.wikipedia.org上的用途
- Самолёты серии X
- Список самолётов (C-D)
- Douglas X-3
- Участник:Artem.G/Черновик1
sl.wikipedia.org上的用途
- X-letala
- Douglas X-3 Stiletto
tr.wikipedia.org上的用途
- Douglas X-3 Stiletto
uk.wikipedia.org上的用途
- Список X-літаків
- Douglas X-3
vi.wikipedia.org上的用途
- Danh sách máy bay-X

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JPEG文件备注

NASA Dryden Flight Research Center Photo Collection

http://www.dfrc.nasa.gov/gallery/photo/index.html NASA Photo: E-17348 Date: Early 1950's Photo by: NACA/NASA

In-flight Photo of the X-3, which Made Significant Contributions to Knowledge about Inertial Coupling

This in-flight NACA High-Speed Flight Station photograph of the X-3 Stiletto illustrates the aircraft’s long slender fuselage and the small wings. The X-3 Stiletto was a single-place jet aircraft with a slender fuselage and a long tapered nose, manufactured by the Douglas Aircraft Company. The X-3's primary mission was to investigate the design features of an aircraft suitable for sustained supersonic speeds, which included the first use of titanium in major airframe components. It was delivered to the NACA High-Speed Flight Station in August of 1954 after some Douglas and Air Force evaluation testing.

The Douglas X-3, known as the Stiletto, was built to investigate the design of an aircraft suitable for sustained supersonic speeds. The X-3 was intended for sustained flight research above Mach 2, but was hampered by use of underpowered Westinghouse J34 turbojet engines which could not power the aircraft past Mach 1 in level flight. This aircraft was built by the Douglas Aircraft Company. <p> The X-3 had, perhaps, the most highly refined supersonic airframe of its day as well as other important advances including one of the first machined structures. It included the first use of titanium in major airframe components. Its long fuselage gave the Stiletto a high-fineness ratio and a low-aspect ratio (the ratio of the wing’s span to its chord; in other words, it was short and stubby). Despite this refined configuration, the maximum speed it attained was Mach 1.21, during a dive. The general consensus was that the aircraft was sluggish and extremely underpowered. The X-3 also demonstrated coupling instability during abrupt rolling maneuvers, which could cause it to go wildly out of control, as happened on a flight on October 27, 1954, with National Advisory Committee for Aeronautics (NACA) pilot Joe Walker at the controls. <p> The principle contribution of the X-3 was its data on inertial coupling (roll divergence)--a tendency to diverge from the intended flight path. The aircraft also shed its small tires routinely, leading to a revision of the design criteria for tires used on high-speed aircraft. This aircraft flew 20 times between 1954 and 1956 at the NACA High-Speed Flight Station (predecessor of NASA’s Dryden Flight Research Center, Edwards, California). Joe Walker was the pilot for all 20 of these missions. The X-3’s first flight was in October 1952 with Douglas test pilot Bill Bridgeman in the cockpit. The Air Force completed a brief evaluation of the airplane in 1953 and 1954 before turning it over to the NACA in the summer of 1954.

File:Douglas X-3 NASA E-17348.jpg

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