Search results
Results from the WOW.Com Content Network
Displacement–length ratio. The displacement–length ratio ( DLR or D/L ratio) is a calculation used to express how heavy a boat is relative to its waterline length. [1] DLR was first published in Taylor, David W. (1910). The Speed and Power of Ships: A Manual of Marine Propulsion.
Philae. (spacecraft) Philae ( / ˈfaɪliː / [6] or / ˈfiːleɪ / [7]) was a robotic European Space Agency lander that accompanied the Rosetta spacecraft [8] [9] until it separated to land on comet 67P/Churyumov–Gerasimenko, ten years and eight months after departing Earth. [10] [11] [12] On 12 November 2014, Philae touched down on the comet ...
The Docklands Light Railway ( DLR) is an automated light metro system primarily serving the redeveloped Docklands area of London and providing a direct connection between London's two major financial districts, Canary Wharf and the City of London. First opened on 31 August 1987, the DLR has been extended multiple times, giving a total route ...
German Aerospace Center. The German Aerospace Center ( German: Deutsches Zentrum für Luft- und Raumfahrt e.V., abbreviated DLR, literally German Center for Air- and Space-flight) is the national center for aerospace, energy and transportation research of Germany, founded in 1969. It is headquartered in Cologne with 35 locations throughout ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
SpaceLiner. SpaceLiner is a concept for a suborbital, hypersonic, winged passenger supersonic transport, conceived at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt, or DLR) in 2005. [1] In its second role the SpaceLiner is intended as a reusable launch vehicle (RLV) capable of delivering heavy payloads into orbit.
A mass driver or electromagnetic catapult is a proposed method of non-rocket spacelaunch which would use a linear motor to accelerate and catapult payloads up to high speeds. Existing and contemporary mass drivers use coils of wire energized by electricity to make electromagnets, though a rotary mass driver has also been proposed. [1]
Dynamic line rating ( DLR ), also known as real-time thermal rating ( RTTR ), is an electric power transmission operation philosophy aiming at maximizing load, when environmental conditions allow it, without compromising safety. Research, prototyping and pilot projects were initiated in the 1990s, but the emergence of the "smart grid ...