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  2. Astronaut propulsion unit - Wikipedia

    en.wikipedia.org/wiki/Astronaut_Propulsion_Unit

    The total delta-v capability of the AMU was about 250 feet per second (76.2 meters per second), roughly three times that of the MMU. The astronaut would strap on the AMU like a backpack, and maneuver around using two hand controllers like that of the later MMU.

  3. Delta method - Wikipedia

    en.wikipedia.org/wiki/Delta_method

    In statistics, the delta method is a method of deriving the asymptotic distribution of a random variable. It is applicable when the random variable being considered can be defined as a differentiable function of a random variable which is asymptotically Gaussian .

  4. Laplace operator - Wikipedia

    en.wikipedia.org/wiki/Laplace_operator

    In the physical theory of diffusion, the Laplace operator arises naturally in the mathematical description of equilibrium. [1] Specifically, if u is the density at equilibrium of some quantity such as a chemical concentration, then the net flux of u through the boundary ∂V (also called S) of any smooth region V is zero, provided there is no source or sink within V: =, where n is the outward ...

  5. High-leg delta - Wikipedia

    en.wikipedia.org/wiki/High-leg_delta

    High-leg delta (also known as wild-leg, stinger leg, bastard leg, high-leg, orange-leg, red-leg, dog-leg delta) is a type of electrical service connection for three-phase electric power installations. It is used when both single and three-phase power is desired to be supplied from a three phase transformer (or transformer bank).

  6. Delta Force: America Strikes Back! - Wikipedia

    en.wikipedia.org/wiki/Delta_Force:_America...

    The Service skills are assigned via a character template and depend on the character's national military, arm and branch of service, and which anti-terrorist unit they joined. Skills are first bought as a generic level (say, in "Climbing") and can be specialized in a related skill (like in "Mountain Climbing").

  7. Self-service - Wikipedia

    en.wikipedia.org/wiki/Self-service

    Self-service is the practice of serving oneself, usually when purchasing items. Common examples include many gas stations, where the customer pumps their own gas rather than have an attendant do it (full service is required by law in New Jersey, urban parts of Oregon, most of Mexico, and Richmond, British Columbia, but is the exception rather than the rule elsewhere [6]).

  8. List of Delta IV Heavy launches - Wikipedia

    en.wikipedia.org/wiki/List_of_Delta_IV_Heavy...

    The Delta IV Heavy (Delta 9250H) was an expendable heavy-lift launch vehicle.When it was in service from 2004 to 2024, it was the largest type in the Delta IV family and was the world's second highest-capacity rocket in operation, behind SpaceX's Falcon Heavy rocket and closely followed by CNSA's Long March 5 rocket.

  9. McDonnell Douglas DC-X - Wikipedia

    en.wikipedia.org/wiki/McDonnell_Douglas_DC-X

    The DC-X, short for Delta Clipper or Delta Clipper Experimental, was an uncrewed prototype of a reusable single-stage-to-orbit launch vehicle built by McDonnell Douglas in conjunction with the United States Department of Defense's Strategic Defense Initiative Organization (SDIO) from 1991 to 1993.