why do jet engines 'pulse'


#1

My understanding of how a jet engine works is that the airflow is continuous, and the output/exhaust/thrust is therefore continuous. Here’s a photo of a jet that appears to have ‘pulsing’ thrust:
flightaware.com/photos/view/6051 … ate/page/2
Can anyone explain this for me please.


#2

Not really a pulse, but the flame from the afterburner. Just the way the flames look.


#3

That’s not the engine pulsing, those are shock diamonds in the (very supersonic) engine exhaust. They don’t move relative to the airplane, they stay in the same position (until throttle setting/airspeed change).

en.wikipedia.org/wiki/Shock_diamond


#4

Where can I get one of those? :smiling_imp:


#5

At last! The rookie knocks one out of the park!!! :laughing: :laughing: :laughing: