Search results
Results from the WOW.Com Content Network
The RQ-3 DarkStar (known as Tier III-or "Tier three minus" during development) is an unmanned aerial vehicle (UAV). Its first flight was on March 29, 1996. The Department of Defense terminated DarkStar in January 1999, after determining the UAV was not aerodynamically stable and was not meeting cost and performance objectives. [1]
From about 2004 to 2011, [4] [5] U.S. military planners used various "Tier systems" to designate the various elements in an overall plan for integrated operations. [6] The Tiers do not refer to specific models of aircraft, but rather roles the aircraft would fill.
[3] [4] An Air Force official said, "It's the same concept as [the RQ-3] DarkStar, it's stealthy, and it uses the same apertures and data links, only it's bigger." [3] It is a tailless flying wing aircraft with pods built into the upper surface of each wing. [5] [6] According to the United States Army Training Circular 3-01.80, the Sentinel has ...
Retrieved from "https://en.wikipedia.org/w/index.php?title=RQ-3_Darkstar&oldid=874041488"This page was last edited on 16 December 2018, at 19:38
DarkStar was statically unstable by design. It used redundant flight control computers to achieve flight stability. The pitch angle was tightly controlled to stay within the controllable region of flight. Also, it was not a the "Lockheed" Darkstar nor was Boeing a subcontractor.
Drawing of Diên Khánh citadel in the Nguyễn dynasty. The Diên Khánh Citadel is situated in Diên Khánh Townlet. The Citadel was built by French officer Olivier de Puymanel for Nguyễn Ánh in 1793 with an area of 36,000 square meters according to the Vauban military architecture which was popular in Western Europe in 17th - 18th centuries.
In 1999, director Tran Anh Hung invited Hai Yen, only 17 at that time, to play a role in the film The Vertical Ray of the Sun (Vietnam/France). [3]In 2000, Hai Yen appeared again in the film Song of the Stork (Vũ khúc con cò), a co-production between Vietnam and Singapore, directed by Nguyễn Phan Quang Bình (Vietnam) and Jonathan Foo (Singapore).
Doom 3 achieved gold status on July 14, 2004 [49] and a Mac OS X release was confirmed the next day. [50] Doom 3 was released in the United States on August 3, 2004, and to the rest of the world on August 13. Due to high demand, the game was made available at select outlets at midnight on the date of release.