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  2. Identification friend or foe - Wikipedia

    en.wikipedia.org/wiki/Identification_friend_or_foe

    Mode 1: military only; provides 2-digit octal (6 bit) "mission code" that identifies the aircraft type or mission. [21] Mode 2: military only; provides 4-digit octal (12 bit) unit code or tail number. [22] Mode 3/A: military/civilian; provides a 4-digit octal (12 bit) identification code for the aircraft, assigned by the air traffic controller.

  3. 14-3-3 protein - Wikipedia

    en.wikipedia.org/wiki/14-3-3_protein

    structure summary. 14-3-3 proteins are a family of conserved regulatory molecules that are expressed in all eukaryotic cells. 14-3-3 proteins have the ability to bind a multitude of functionally diverse signaling proteins, including kinases, phosphatases, and transmembrane receptors. More than 200 signaling proteins have been reported as 14-3-3 ...

  4. Apple Vision Pro - Wikipedia

    en.wikipedia.org/wiki/Apple_Vision_Pro

    The device runs visionOS, [13] a mixed-reality operating system derived from iPadOS frameworks using a 3D user interface; it supports multitasking via windows that appear to float within the user's surroundings, [14] as seen by cameras built into the headset. A dial on the top of the headset can be used to mask the camera feed with a virtual ...

  5. Bell X-5 - Wikipedia

    en.wikipedia.org/wiki/Bell_X-5

    Bell X-5. The Bell X-5 was the first aircraft capable of changing the sweep of its wings in flight. It was inspired by the untested wartime P.1101 design of the German Messerschmitt company. In a further development of the German design, which could only have its wing sweepback angle adjusted on the ground, the Bell engineers devised a system ...

  6. 1 − 2 + 3 − 4 + ⋯ - Wikipedia

    en.wikipedia.org/wiki/1_%E2%88%92_2_%2B_3_%E2%88...

    The idea becomes clearer by considering the general series 1 − 2x + 3x 2 − 4x 3 + 5x 4 − 6x 5 + &c. that arises while expanding the expression 1 ⁄ (1+x) 2, which this series is indeed equal to after we set x = 1. [12]

  7. Northrop X-4 Bantam - Wikipedia

    en.wikipedia.org/wiki/Northrop_X-4_Bantam

    The Northrop X-4 Bantam was a prototype small twinjet aircraft manufactured by Northrop Corporation in 1948. It had no horizontal tail surfaces, depending instead on combined elevator and aileron control surfaces (called elevons) for control in pitch and roll attitudes, almost exactly in the manner of the similar-format, rocket-powered Messerschmitt Me 163 of Nazi Germany's Luftwaffe.

  8. Douglas X-3 Stiletto - Wikipedia

    en.wikipedia.org/wiki/Douglas_X-3_Stiletto

    The X-3's fastest flight, made on 28 July 1953, reached Mach 1.208 in a 30° dive. [3] A plan to re-engine the X-3 with rocket motors was considered but eventually dropped. [5] With the completion of the contractor test program in December 1953, the X-3 was delivered to the United States Air Force. The poor performance of the X-3 meant only an ...

  9. Bell X-14 - Wikipedia

    en.wikipedia.org/wiki/Bell_X-14

    The Bell X-14 (Bell Type 68) is an experimental VTOL aircraft flown in the United States in the 1950s. The main objective of the project was to demonstrate vectored thrust horizontal and vertical takeoff, hover , transition to forward flight, and vertical landing.