Simviation Forum - Ram Air Turbine

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Ram Air Turbine (Read 313 times)

Jan 7^th, 2005 at 5:50am

Enola Gay Ex Member
Forza Lazio!!

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Hi,
i was just curious to know what a ram air turbine was. Meljets models have em and i am pretty sure they exist in real life.

cheers,
ashar

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Reply #1 - Jan 7^th, 2005 at 6:13am

Craig. Offline
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Birmingham

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It is used in the event of an electrical failure/ hydraulic failure, one of the two, its a small propeller that drops below the aircraft and gets the systems working again

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Reply #2 - Jan 7^th, 2005 at 6:19am

Hagar Offline
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My Spitfire Girl
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It's basically a wind-driven generator. The idea is not new. Some of the earliest aircraft were fitted with a wind-driven fan (like a small propeller) to power the fuel pumps & electrical equipment.

PS. Here's a typical Hamilton Sundstrand RAT as fitted to some modern jet airliners like the A330/A340.

http://www.hamiltonsundstrandcorp.com/hsc/proddesc_display/0,3809,CLI1_DIV22_ETI...

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Reply #3 - Jan 7^th, 2005 at 6:43am

jrpilot Offline
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Here you go....
www.airliners.net/open.file/191739/L/

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Reply #4 - Jan 7^th, 2005 at 7:59am

Enola Gay Ex Member
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gee,
this thing is pretty cool then. it must be pretty important then Shocked

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Reply #5 - Jan 7^th, 2005 at 8:57am

Nexus Offline
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The greater of two evils...

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Yeah it's important. The onboard batteries cannot power the aircraft that long, so the electricity generated by the RAT is very important, aswell as the ability to power the hydraulic pumps so you can control the aircraft without having to be a bodybuilder....