EC120 Diesel

[Agile]

Funny how the back exhaust strongly resemble a turbine exhaust look.
is that for cooling?, surely it could have been made more integrated.





could it be the same reason some electric cars still carry a front grill even though the need for cooling has disappeared.


Yes probably both piston engine and turbines have the same susceptibility to dust, however it is much easier to fit air filters on a piston engine than it is on a turbine. Turbine use 75% of the air for cooling if I remember my ground school well.

[riff_raff]

I seriously doubt that. Sand is not healthy for any kind of engine (except maybe silane fuelled engines).

Yes, intake ingestion of sand is not healthy for either turbine or recip engines. But it is far easier to filter this type of debris from the intake airflow of a recip engine than a turbine engine. Turboshaft helo engines use dynamic particle separator devices on the intake that are far less effective than the barrier filters used by recip engines.

[skadi]

Originally Posted by riff_raff

Yes, intake ingestion of sand is not healthy for either turbine or recip engines. But it is far easier to filter this type of debris from the intake airflow of a recip engine than a turbine engine. Turboshaft helo engines use dynamic particle separator devices on the intake that are far less effective than the barrier filters used by recip engines.

Barrier filters are also availble for turbine helicopters. Most of the german EMS-Ships are equipped with these filters from different suppliers:

http://www.helionline.net/060-214274...y///45520.html

http://www.helionline.net/photogallery///45502//2.html

skadi