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  2. 2/1 game forcing - Wikipedia

    en.wikipedia.org/wiki/2/1_game_forcing

    1 ♠ – 22 ♠ – 2NT. Forcing to game, with balanced hand and a good club suit. 1 ♠ – 22 ♦ – 3 ♣ Forcing, unless the partnership has agreed that this is an exception to the "2/1 rule." 1 ♦ – 2 ♣ Forcing for one round only (as in Standard American), except in the variant of 2/1 where this sequence is game forcing as ...

  3. Air handler - Wikipedia

    en.wikipedia.org/wiki/Air_handler

    An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning system. [1] An air handler is usually a large metal box containing a blower , furnace or A/C elements, filter racks or chambers, sound attenuators , and dampers . [ 2 ]

  4. Heat recovery ventilation - Wikipedia

    en.wikipedia.org/wiki/Heat_recovery_ventilation

    Diagramatic operation of a thermal wheel Ljungström Air Preheater by Swedish engineer Fredrik Ljungström (1875–1964). A thermal wheel, also known as a rotary heat exchanger, or rotary air-to-air enthalpy wheel, energy recovery wheel, or heat recovery wheel, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of air-handling units or rooftop ...

  5. Dragon Dream - Wikipedia

    en.wikipedia.org/wiki/Dragon_Dream

    Dragon Dream (FAA registration: N866ML [1]) is an experimental [1] lighter than air (LTA) cargo rigid airship built by Worldwide Aeros Corp as a half-scale proof of concept prototype for a design which the manufacturer calls the "Aeroscraft". [2]

  6. Air cycle machine - Wikipedia

    en.wikipedia.org/wiki/Air_cycle_machine

    An air cycle machine (ACM) is the refrigeration unit of the environmental control system (ECS) used in pressurized gas turbine-powered aircraft. Normally an aircraft has two or three of these ACM. Each ACM and its components are often referred as an air conditioning pack.

  7. M1120 HEMTT Load Handling System - Wikipedia

    en.wikipedia.org/wiki/M1120_HEMTT_Load_Handling...

    All M1120 variants are air transportable in the C-130 and C-17 transport aircraft. [ 1 ] The M1120 HEMTT LHS is fitted with Multilift Mark 5 (now designated MPH165-PLS) load handling system, this an imperial variant of the Mark 4/MPH165 that is further-modified to include a folding hook arm to bring the system within C-130 Hercules air ...