Northrop X-21Northrop X-21
Common
Rarity: Common
The most frequent rarity: most Wikipedia articles become Commons.
Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.
At a glance
- Class
- Invention
- Domain
- Science and technology
- Knowledge cost
- 3
- In collections
- Nobody has pulled it yet.
What Wikipedia says
The Northrop X-21A was an experimental aircraft designed to test wings with laminar flow control. It was based on the Douglas WB-66D airframe, with the wing-mounted engines moved to the rear fuselage and making space for air compressors.
Excerpt from the Wikipedia article “Northrop X-21”, under the CC BY-SA 4.0 license. Read the article on Wikipedia
Image: Auteur inconnu, Public domain, via Wikimedia Commons.
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