North American XB-70 Valkyrie - Feature from the National Museum of the USAF
The futuristic XB-70A was originally conceived in the 1950s as a high-altitude, nuclear strike bomber that could fly at Mach 3 (three times the speed of sound) -- any potential enemy would have been unable to defend against such a bomber.
By the early 1960s, however, new Surface-to-Air Missiles (SAMs) threatened the survivability of high-speed, high-altitude bombers. Less costly, nuclear-armed ICBMs (Intercontinental Ballistic Missiles) were also entering service. As a result, in 1961, the expensive B-70 bomber program was canceled before any Valkyries had been completed or flown.
Even so, the USAF bought two XB-70As to test aerodynamics, propulsion and other characteristics of large supersonic aircraft. The first XB-70A, on display here, flew in September 1964, and it achieved Mach 3 flight in October 1965. The second Valkyrie first flew in July 1965, but in June 1966, it was destroyed following an accidental mid-air collision. The third Valkyrie was not completed.
The first XB-70A airpl
1 view
471
96
5 months ago 00:20:00 17
American Truck Simulator: Nebraska - Gameplay Preview
5 months ago 00:33:12 1
The End of the War in Ukraine Approaches as NATO is Completely Defeated | Scott Ritter
5 months ago 00:12:17 1
The English Language in 67 Accents & Random Voices
5 months ago 00:05:15 1
MOTÖRHEAD-Brotherhood of Man HD
5 months ago 00:02:49 1
Ben E King - Spanish Harlem
5 months ago 00:11:37 4
Morgan Black vs Helena Crevar | 2024 ADCC North American Trials 2
5 months ago 00:08:42 1
Portraits & Beyond by Alex Dymov
5 months ago 00:32:20 1
15 Idioms for Feelings | IELTS Vocabulary
5 months ago 00:02:34 1
Wage War - NAIL5 (Official Music Video)
5 months ago 00:03:06 1
Chris Norman & Suzi Quatro - Stumblin’ In (1978)
5 months ago 01:10:57 1
Insomnium live from Middle East 4/11/2024 (FULL SET)
5 months ago 00:48:05 3
Omnium Gatherum live from Middle East 4/11/2024 (FULL SET)
5 months ago 00:08:06 1
תא”ל (מיל’) אמיר אביבי יו״ר תנועת הביטחוניסטים. על יחסים עם רוסיה ועוד.
5 months ago 00:04:03 1
Dido, White Flag (live), San Francisco, June 26, 2019 (4K)
5 months ago 00:10:02 1
HOW WREXHAM BECAME A MONSTER CLUB 😱
5 months ago 00:06:42 1
No Mourns The Wicked - Wicked The Musical
5 months ago 00:05:42 1
WIND ROSE - Diggy Diggy Hole (Official Video) | Napalm Records
5 months ago 00:52:19 1
NATO is Defeated and Can’t Develop a Strategy | Andrei Martyanov