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2. Delta Delta Delta - Wikipedia

   en.wikipedia.org/wiki/Delta_Delta_Delta

   Delta Delta Delta. Delta Delta Delta ( ΔΔΔ ), also known as Tri Delta, is a global [2] women's fraternity and Greek life organization founded on November 27, 1888 at Boston University by Sarah Ida Shaw, Eleanor Dorcas Pond, Isabel Morgan Breed, and Florence Isabelle Stewart. With over 200,000 living initiates at 141 chapters and over $450M ...

3. List of Thor and Delta launches (2010–2019) - Wikipedia

   en.wikipedia.org/wiki/List_of_Thor_and_Delta...

   List of Thor and Delta launches (2010–2019) As of October 2018, only the Delta IV remains in production. Single-stick versions of Delta IV was retired by United Launch Alliance (ULA) in 2019 and replaced by the ULA Atlas V, leaving the Delta IV Heavy the only remaining operational member of the Delta family, flying US national security missions.

4. Delta (rocket family) - Wikipedia

   en.wikipedia.org/wiki/Delta_(rocket_family)

   The Delta rocket family was a versatile range of American rocket -powered expendable launch systems that provided space launch capability in the United States from 1960 to 2024. Japan also launched license-built derivatives ( N-I, N-II, and H-I) from 1975 to 1992. More than 300 Delta rockets were launched with a 95% success rate.

5. Delta Queen - Wikipedia

   en.wikipedia.org/wiki/Delta_Queen

   The Delta Queen is an American sternwheel steamboat. She is known for cruising the major rivers that constitute the tributaries of the Mississippi River, particularly in the American South, although she began service in California on the Sacramento River delta for which she gets her name. She was docked in Chattanooga, Tennessee and served as a ...

6. Dirac delta function - Wikipedia

   en.wikipedia.org/wiki/Dirac_delta_function

   In mathematical analysis, the Dirac delta function (or δ distribution ), also known as the unit impulse, [1] is a generalized function on the real numbers, whose value is zero everywhere except at zero, and whose integral over the entire real line is equal to one. [2] [3] [4] Since there is no function having this property, modelling the delta ...

7. Delta-v - Wikipedia

   en.wikipedia.org/wiki/Delta-v

   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 ...