Text 13348, 64 rader
Skriven 2014-03-30 19:55:23 av alexander koryagin (2:5020/2140.2)
  Kommentar till text 13339 av Ward Dossche (2:292/854)
Ärende: Re: MH370 update on my March 17th message
=================================================
Hi, Ward Dossche!
I read your message from  30.03.2014 16:01
about Re: MH370 update on my March 17th message.

  WD> There are no internal generators. There are batteries but they are
  WD> small and don't last long. Further MH370 had a minimum equipment
  WD> list notification that its APU (Auciliary Power Unit, in the tail)
  WD> was not function.

    I think that a plane hydraulic system doesn't demand much power if 
it is in operation. So all flaps could work. The auto-pilot also does 
not consume much power.

  WD> If a plane is in-flight and has no engines, there is no electricity
  WD> other than what's left in the batteries and provided by the RAM-
  WD> turbine.

    So when the plane glides down the RAM turbines of four engines could 
work out some energy. It can be enough for the auto-pilot and hydraulic 
system. So, the auto-pilot could work until the touch-down.

  WD> Gliding wihtout an engine function cannot go on forever. Contrary
  WD> to glider-planes that can climb with warm air pockets, a disabled
  WD> jetliner as only one direction: down. To keep lift it needs to
  WD> point the nose down so that there is sufficient air over the wing
  WD> surfaces. But it will always descend.

  WD> The glide ratio of a 777 is 12:1 meaning it can glide 12 times the
  WD> distance of its altitude. So when a 777 cruises at 10.000 meter, it
  WD> can glide a maximum of 120km and then be at sea-level. If it was
  WD> above Colorado for examble which is elevated, it would be 99km.

    Yes, I don't object that after the fuel runs out the plane cannot 
fly more than 100 km, gliding down. We discuss the possibility that the 
plane touch-down could be relatively smooth and the plane then drown up 
in one piece, not leaving any debris on the surface.

  ak>> The plane behavior suggests that the pilots were dead and the
  ak>> plane was controlled by auto-pilot.

  WD> If it flew by autopilot, then it should've concluded its flight
  WD> plane and crashed in China somewhere.

    The pilot could be alive for some time, and they could change the 
plane course.

  ak>> Although, if the navigation system was severely damaged, the
  ak>> pilots for 4 hours flew blindly, in complete darkness, until the
  ak>> dawn showed them where the east was. But it was too late.

  WD> Even modern electronic airplanes still have some dials. They do
  WD> have a regular compass, an artificial horizon and some other
  WD> 'primitive' things. There's no way a pilot can fly in a 90 wrong
  WD> heading for 4 hrs and not know.

    A compass alone is not enough for flying in the complete darkness. 
If the Malaysia peninsula was covered by night clouds the plane could 
fly over the land.

Bye, Ward!
Alexander Koryagin
fido7.fidonews 2014
--- FIDOGATE 5.1.7ds
 * Origin: Pushkin's BBS (2:5020/2140.2)