PPRuNe Forums - L-39 Hot Start

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Tom Schrade

17th March 2012 14:31

L-39 Hot Start

Can anyone tell me what would happen if you attempted to start a L-39 at 5000 ft MSL with a density altitude of 7,500 if FOD was injested during the start and restricted the intake by 40%. Assume this happens at the moment just prior to introducing fuel into the main turbine.

sycamore

17th March 2012 18:02

Look on t`other thread ,Tom...

TBM-Legend

17th March 2012 20:57

meltdown..

peeush

5th April 2012 05:48

Just loud thinking...... I don't think it would light up at all-- the charge would be too rich to ignite it seems, though I don't have a data to support this.

John Farley

5th April 2012 13:40

TBM-Legend

Meltdown? -only if you leave the HP cock open after the JPT reaches a sensible max. Surely this applies regardless of the starting conditions - mechanical or ambient.

chubbychopper

6th April 2012 20:45

Agree entirely with JF.

Watched a King Air taxi out last week with both intake pugs left in. Both engines started and ran fine....until an embarrassed crew were notified.

Entirely different engines of course.

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