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Re: [AWES] RAT Saves Dreamliner from its Lions

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  • dave santos
    Chris, What do you think of stock RATs as a baseline flygen model?  We have multiple schemes to whip turbines thru the air at decent speeds (like
    Message 1 of 4 , Jan 22, 2013
      Chris,

      What do you think of stock RATs as a baseline flygen model? 

      We have multiple schemes to whip turbines thru the air at decent speeds (like Joby/Makani), and basing these on COTS RATS might be quite useful leverage. Forget an E-VTOL requirement, there are simpler ways to fly then as gens only,

      daveS
       



    • Bob Stuart
      That was The Gimli Glider. The RAT only powered the instruments and landing gear, failing on the nose gear and flaps. The flight controls were successfully
      Message 2 of 4 , Jan 22, 2013
        That was "The Gimli Glider."  The RAT only powered the instruments and landing gear, failing on the nose gear and flaps.  The flight controls were successfully crossed for a side-slip by muscle power alone.  That got her down soon enough to warn a group of kids having a bicycle rodeo farther along the disused runway.  

        Bob Stuart

        On 22-Jan-13, at 11:09 AM, christopher carlin wrote:

        AN even more exciting tale along this line goes back perhaps 20 years ago when  a 767 ran out of fuel over Canada and did a glider landing using the RAT to power essential flight controls.

        On Jan 20, 2013, at 7:24 PM, dave santos wrote:

         

        The first 787 whose Lion batteries failed was reportedly saved by its RAT (a pop-out Ram-Air Turbine). Since this happened over Texas, KiteLab Austin claims some credit. Once again, AWE to the rescue; next we'll save the world  :)


        "...Six hours into a test flight in November of 2010, in the skies over Texas just after 2:30 in the afternoon Central Time, the pilot of Boeing 787 Dreamliner Number 2 declared an emergency. There was smoke in the cabin, and the airplane's "glass cockpit"—its computerized displays and controls—had partially failed, its primary flight displays and automatic throttle controls gone...he touched down at Laredo International Airport and brought the plane to a halt, the crew and passengers...evacuated the plane, jumping down the emergency slides. The cause of the emergency was an electrical fire that took out the aircraft's primary and auxiliary power units. The Dreamliner would have become a nightmare without the emergency power source—a Ram Air Turbine, which dropped down from the fuselage to convert airflow past the plane into power for essential controls..."

        Sean Gallagher  Ars Technica








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