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Posted
This shouldn't be the case; EPU operation on bleed air only (without hydrazine) should be possible if engine RPM is between 80 % and 90 %.

 

No matter what, if the EPU is activated, it will always start with Hydrazine. Then, if enough engine bleed air is available, the EPU will transition to blended operation, Using Hydrazine only of it is require to maintain proper EPU turbine speed.

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..

  • 1 year later...
Posted
On 5/3/2020 at 3:15 PM, mvsgas said:

 

No matter what, if the EPU is activated, it will always start with Hydrazine. Then, if enough engine bleed air is available, the EPU will transition to blended operation, Using Hydrazine only of it is require to maintain proper EPU turbine speed.

Try EPU turned on at MIL thrust. Hydrazin light is on permanently and EPU fuel is decreasing rapidly constantly.

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