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From Archangel to Senior Crown: Design and Development of the Blackbird (Library of Flight Series). Reston, VA: American Institute of Aeronautics and Astronautics (AIAA), 2008. ISBN 978-1-56347-933-5. Pedlow, Gregory W. and Donald E. Welzenbach. The Central Intelligence Agency and Overhead Reconnaissance: The U-2 and OXCART Programs, 1954 ...
[8] [9] [10] As of 2025, the Blackbird still holds all three world records. In 1989, the USAF retired the SR-71, largely for political reasons, [11] although several were briefly reactivated before their second retirement in 1998. NASA was the final operator of the Blackbird, using it as a research platform, until it was retired again in 1999. [12]
A bullock cart or ox cart (sometimes called a bullock carriage when carrying people in particular) is a two-wheeled or four-wheeled vehicle pulled by oxen. It is a means of transportation used since ancient times in many parts of the world. They are still used today where modern vehicles are too expensive or less suitable for the local ...
Demystifying a heart-healthy diet was the focus of a lecture by cardiologist Dariush Mozaffarian, MD, the dean of the Friedman School of Nutrition Science & Policy at Tufts University, at a recent ...
"The Oxcart Story." Studies in Intelligence, Issue 15, Winter 1971 (Released: 6 May 2007). Retrieved: 10 July 2009. Merlin, Peter W. From Archangel to Senior Crown: Design and Development of the Blackbird. Reston, Virginia: American Institute of Aeronautics and Astronautics (AIAA), 2008. ISBN 978-1-56347-933-5.
D-21 on display at the Blackbird Airpark, Air Force Plant 42, Palmdale, California A close-up rear view of D-21 on M-21 at the Museum of Flight in Seattle SR-71 and D-21 at the Pima Air & Space Museum, Tucson, Arizona D-21 wreck in the Chinese Aviation Museum. D-21B #510 – Museum of Flight, Seattle, Washington (mounted on remaining M-21 #60 ...
Red River ox cart (1851), by Frank Blackwell Mayer. The Red River cart is a large two-wheeled cart made entirely of non-metallic materials. Often drawn by oxen, though also by horses or mules, these carts were used throughout most of the 19th century in the fur trade and in westward expansion in Canada and the United States, in the area of the Red River and on the plains west of the Red River ...
The Lockheed YF-12 is an American Mach 3+ capable, high-altitude interceptor prototype, developed and manufactured by American aerospace company Lockheed Corporation.. The interceptor was developed during the late 1950s and early 1960s as a potential replacement for the F-106 Delta Dart interceptor for the United States Air Force (USAF).