/u/AeroNerd2012's posts in /r/aviation

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On June 15, 1991, the eruption of Mount Pinatubo in the Philippines expelled 4 km³ of volcanic ash. At Cubi Point Naval Air Station, 40 km away, 10-15 cm of ash accumulated on a World Airways DC-10, shifting its center of gravity and causing its nose to tip up.

349 upvotes

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Convair 990 with large anti-shock bodies on the upper trailing edge of the wings, to increase the critical Mach by reducing transonic drag.

301 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
On June 15, 1991, the eruption of Mount Pinatubo in the Philippines expelled 4 km³ of volcanic ash. At Cubi Point Naval Air Station, 40 km away, 10-15 cm of ash accumulated on a World Airways DC-10, shifting its center of gravity and causing its nose to tip up.	349
Convair 990 with large anti-shock bodies on the upper trailing edge of the wings, to increase the critical Mach by reducing transonic drag.	301