14 Matching Annotations
  1. Nov 2022
  2. Aug 2022
    1. The system of card indexing was propagated by a French Person called Abb’e Jean Rozier (1734-93). The index is prepared by allotting a separate card to each piece of information. The required information are written on the cards. All cards are of uniform size and are arranged in alphabetical, numerical or geographical order.

      https://www.preservearticles.com/business/what-is-card-indexing-and-explain-its-advantages-and-disadvantages/1740

      This source is questionable in it's sourcing and seems to mix several different methods and systems, so we'll need to treat it with a massive grain of salt.

      It does Mention Abb'e Jean Rozier (1734-93) as a historical figure related to propagating a system of card indexing which is a new name to me and thus worth looking into.

      Is Abb'e here a title? (potentially the French translation of the English abbot which is correctly abbé, so this may have had a typo.)

      The dates of life given would indicate that this is not the balloonist/scientist Jean-François Pilâtre de Rozier. See: https://en.wikipedia.org/wiki/Jean-Fran%C3%A7ois_Pil%C3%A2tre_de_Rozier

  3. Apr 2022
    1. Kai Kupferschmidt. (2021, December 1). If you’re curious how likely #omicron is to have spread from South Africa or Botswana to different places, @DirkBrockmann and colleagues have done some interesting calculations based on the world aviation network from 08/2021 You can see that US seems a very likely destination https://t.co/OSnZ6ZNble [Tweet]. @kakape. https://twitter.com/kakape/status/1466107074585239568

    1. aviation experts haddevised a solution to the problem of pilot interruption: the “sterile cockpit rule.”Instituted by the Federal Aviation Administration in 1981, the rule forbids pilotsfrom engaging in conversation unrelated to the immediate business of flyingwhen the plane is below ten thousand feet.

      The "sterile cockpit rule" was instituted by the FAA in 1981 as a solution to cut down on the high proportion of airborne accidents during take-off and landing. The rule forbids pilots from engaging in any conversations unrelated to the flight of the plane, which has the effect of removing any distracting stimuli which may otherwise cascade into an accident.

  4. Jan 2022
    1. an accident in which there is a collision with terrain, water, or obstacle during the course of a flight, without indication of loss of control.

      Controlled Flight into Terrain CFIT

  5. Sep 2021
    1. NVESD researches, develops, tests and evaluates electro-optic/infrared (EO/IR) sensor technologies for airborne and ground-based reconnaissance and targeting under all battlefield conditions. NVESD also expands tactical use of laser designators and markers for precision engagement, day or night, while maintaining the capability to maneuver.

      Night Vision and Electronic Sensors Directorate operations

    1. Army 12th Aviation Battalion uses helicopters to maintain readiness for consequence management missions, such as defense support for civil authorities or homeland security operations, and to provide transportation. To conduct these flights, the Army uses 34 Sikorsky UH-60 helicopters stationed at Davison Army Airfield in Fort Belvoir, Virginia.

      US Army 12th Battalion

    1. Davison Army Airfield (DAAF) located on Fort Belvoir, Virginia. DAAF is home to the Army’s 12th Aviation Battalion, which is the primary operator at the airfield, along with the District of Columbia Army National Guard and the Night Vision and Electronic Sensors Directorate. There are various aircraft stationed at DAAF including UH-60 Blackhawk and UH-72 Lakota helicopters, which are used for missions such as consequence management readiness, defense support for civil authorities, homeland security operations, air medical operations, and transportation.

      Army Helicopter missions: Night Vision and Electronic Sensors Directorate

    2. DAAF personnel reported 13,272 departure and arrival operations, not including closed pattern work (take-off and landing practice) at the airfield, in Calendar Year (CY) 2020 with over 98 percent occurring during acoustical daytime hours—7:00 a.m. to 10:00 p.m. This is the highest yearly total in the past four years.

      Army/Davison Flight Count

    3. Helicopter use of the Pentagon helipad is limited to only DoD-directed exercises and three- and four-star executive travel and their civilian equivalents

      Pentagon PAT restrictions

    4. UH-60, which is the Army’s most common and loudest helicopter in the NCR,

      UH-60 loudness in NCR

    1. 12th Aviation Battalion conducts air movement and engineer technical rescue operations for senior leaders of the Army, Department of Defense, and United States Government, while maintaining a continuous alert posture in support of the Joint Force Headquarters National Capital Region in order to sustain a rapid response, readiness, and support force capability.
    1. Global air traffic is expected to double to 8.2 billion passengers in 2037, according to IATA, which predicts that aviation's 2019 emissions peak of around 900 million metric tons of CO2 will be exceeded within the next two to three years.At the same time, the window to cut the world's reliance on fossil fuels and avoid catastrophic changes to the climate is closing rapidly. The International Energy Agency forecasts that aviation's share of global carbon emissions will increase to 3.5% by 2030 from just over 2.5% in 2019 in the absence of efforts to further decarbonize.

      SRG education campaign for air travellers ( mostly middle class and rich) to do their part and minimize air travel until the breakthrough technologies are here. Temporary abstinence or voluntary lotto system.

  6. Jan 2018
    1. The E-Fan X hybrid-electric technology demonstrator is anticipated to fly in 2020 following a comprehensive ground test campaign, provisionally on a BAe 146 flying testbed, with one of the aircraft’s four gas turbine engines replaced by a two megawatt electric motor. Provisions will be made to replace a second gas turbine with an electric motor once system maturity has been proven.

      I wonder what kind of range this would offer