J79 Turbojet Engine: Just the Jet

The video preceding this one was all talking about reducing the noise made by jet engines near airports.
This video is not about that. Probably as opposite as can be.
For your enjoyment, we made as much noise as possible, using multiple afterburner pulls, and burning prodigious amounts of JetA.

The Jet fuel hoax crowd are idiots; every moronic one of them.

This is a J79-19, normally installed in a supersonic aircraft used to train military pilots in a dissimilar adversary environment... yes, exactly like Top Gun.

Other models, such as the J79-15, were used in the F-4 Phantom 2.
The -11 was used in the early F-104 Starfighters.

It was sent to us for overhaul and made new again by the boys at S&S Turbines: Clayton, Justin, and Walter. The operator is Electron Bill.

The engine burns:
5 gal per minute of fuel at idle. 5000 rpm.
35-40 gpm at full dry power. 7685 rpm. Nominally 11,500 lbs of static thrust
85-90 gpm in full afterburner. 7685 rpm. Nominally 18,300 lbs of static thrust
Each engine's actual number vary, depending on many factors...
The engine uses 155 lbs of air per second at both of those max settings.
The extra 50 gpm in AB is used to "reheat" the exhaust of the basic engine, making it hotter, and expanding more, so it leaves the engine much faster.
This day, we were running for about 30 minutes, with a lot of idling, which I cut out. We burned through 1,800 Litres of JetA. Good thing we bought 4,000L from the airport, which they delivered to our tank.
According to our instrumentation guy, the thrust was about half what I expected, because only one of the two (left and right) load cells on the engine mounts was connected.

The AB does not sound louder in the vid, but it is in real life. The mic is a lapel unit, inside a high density foam shield, and the shield is placed inside a Pelican case, on the ground, about 70 yards back and to the side. You can see the position of the tripod, showing why it is not blown away: it's not in the jet stream. In that setup, the mic is completely overwhelmed at or even before max dry power.
I try to explain how dangerously loud the noise is in my video "Testing a J79 with Afterburner"

Please let me know if you like this non-talking video.