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Viggen airshow from 23 Dec. (Yesterday)


il_corleone
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It seems it is normal for the "emergency turbine" (don't know the actual name of the little prop on the left side) to be out during taxi, does anyone know why? It seems as soon as the NLG touches down the turbine deploys.


Edited by mvsgas

To whom it may concern,

I am an idiot, unfortunately for the world, I have a internet connection and a fondness for beer....apologies for that.

Thank you for you patience.

 

 

Many people don't want the truth, they want constant reassurance that whatever misconception/fallacies they believe in are true..

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The RAT (Ram Air Turbine) or "millan" as it is called in the Swedish Airforce does indeed deploy when the nose gear strut compresses. It houses several connections like hydraulic fluid, oxygen and compressed air for the radar. Ground crew also needs access in case of a starter motor fire.

The RAT hatch closes hydraulically, and this function must be disabled when the aircraft is on ground, in order to protect the ground crew.

It used to deploy with the landing gear, but the fan blades of the RAT could come loose and puncture the hydraulic reservoir, so it was modified to deploy with the nosegear compression.

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