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Delta Air Lines Flight 723 was a flight operated by a McDonnell Douglas DC-9 twin-engine jetliner, operating as a scheduled domestic passenger flight from Burlington, Vermont, to Logan International Airport in Boston, Massachusetts, with an intermediate stop in Manchester, New Hampshire. [1] On July 31, 1973, at 11:08 a.m., while on an instrument landing system (ILS) instrument approach into ...
The STR Delta Queen is 285 feet (87 m) long, 58 feet (18 m) wide, and draws 11.5 feet (3.5 m). She weighs 1,650 tons (1,676 metric tons ), with a capacity of 176 passengers. Her cross-compound steam engines generate 2,000 indicated horsepower (1,500 kW), powering a stern -mounted paddlewheel. Built in 1927, she is the last surviving steam-powered overnight passenger boat plying the watershed ...
Delta wing. This article is about the wing shape. For the racing car, see DeltaWing. The Dassault Mirage 2000 is among the most successful delta-winged fighter jets, being used by many countries to this day. A delta wing is a wing shaped in the form of a triangle. It is named for its similarity in shape to the Greek uppercase letter delta (Δ).
Delta-v (more known as " change in velocity "), symbolized as and pronounced deltah-vee, as used in spacecraft flight dynamics, is a measure of the impulse per unit of spacecraft mass that is needed to perform a maneuver such as launching from or landing on a planet or moon, or an in-space orbital maneuver. It is a scalar that has the units of speed. As used in this context, it is not the same ...
Delta Air Lines Flight 1080 was a scheduled flight from San Diego, California to Atlanta, Georgia, notable for the incident that occurred on April 12, 1977 during the San Diego to Los Angeles leg of the flight. [3] Unknown to the crew, the Lockheed L-1011 's left elevator had become stuck in a fully upwards position. This led to the aircraft pitching up aggressively and causing the aircraft to ...
The final half-decade of launches in the Thor/Delta family consisted of one Delta IV Heavy each year from 2020 through 2024. This followed the retirement of Delta II in 2018 and single-stick (non-Heavy) variants of the Delta IV in 2019. With the start of 2024, Vulcan Centaur took its first flight in time to maintain continuity of ULA's service in the heavy-lift launch vehicle market before the ...
The Mississippi Delta, also known as the Yazoo–Mississippi Delta, or simply the Delta, is the distinctive northwest section of the U.S. state of Mississippi (and portions of Arkansas and Louisiana) that lies between the Mississippi and Yazoo rivers. The region has been called "The Most Southern Place on Earth" [1] ("Southern" in the sense of "characteristic of its region, the American South ...
The delta method is often used in a form that is essentially identical to that above, but without the assumption that Xn or B is asymptotically normal. Often the only context is that the variance is "small". The results then just give approximations to the means and covariances of the transformed quantities. For example, the formulae presented in Klein (1953, p. 258) are: [5]