cacciatorino
Guest
http://www.defensenews.com/story.php?i=4415616Did I read somewhere that the turboprop engines used on this plane might be those to mount on the next generation of civil aircraft, a comment from the president?
Er Presidente
Guest
a very interesting engine.
born under a bad star, the French had plans to derive it from their m88, then it had a beneficial evolution that makes it a real "pritista".
courageous architecture and remarkable performance, if turboprop must be, he will be doing school in the West.
I will have to write something specific, for now I can say that the turboprop has an enemy in the civil market, the noise, but the economic crisis could bring an eye to these "minor" aspects, the advantages in consumption and performance could give some perspective different from the use on military "cargo" (then they must not speak in flight the passengers!).
:biggrin:
born under a bad star, the French had plans to derive it from their m88, then it had a beneficial evolution that makes it a real "pritista".
courageous architecture and remarkable performance, if turboprop must be, he will be doing school in the West.
I will have to write something specific, for now I can say that the turboprop has an enemy in the civil market, the noise, but the economic crisis could bring an eye to these "minor" aspects, the advantages in consumption and performance could give some perspective different from the use on military "cargo" (then they must not speak in flight the passengers!).
:biggrin:
Attachments
cacciatorino
Guest
It's true he has the inverter! practically on the a400m two propellers turn in one direction, and the other two in the opposite direction (to better balance the plane boh?), but the 4 engines are identical for reasons of logistic simplification, therefore two propellers have an inverter between them and the engine, the other two do not.
However recently I went in crantry with an atr72 and then with a fokker both turboprop. They have a scary acceleration at the start, but then once in a regimen they didn't seem so loud.
Bye.
However recently I went in crantry with an atr72 and then with a fokker both turboprop. They have a scary acceleration at the start, but then once in a regimen they didn't seem so loud.
Bye.
cacciatorino
Guest
a curiosity:
what does the beak point down immediately after the main air intake?
Attachments
Er Presidente
Guest
what you see is a "mockup" (model) old enough, probably accessories have been repositioned over time (including exchangers and their discharges).
I attach a newer version where you see the rearranged exchanger more similar to the final configuration.
Attachments
Er Presidente
Guest
All right, mo they invented the inverter!
:
then, the a400m to two propellers that turn in one sense, those of the two internal engines, and two in the opposite direction, the external ones.
this to cancel the gyroscopic effects of the great propellers.
to avoid building different engines (destroyed and left) decided to reverse the bike of the propellers in the reducer.
the gearboxes that reverse the direction of rotation are different from the other two, but the engines are identical.
therefore the a400m have the gearboxes with the rotation reverse (an extra gear) on two of the engines.
:smile:
