This is more film of the GE LM1500 gas turbine engine running at the S&S Turbines open-air test cell.
All the noise in the beginning is made by the start cart, which is a 90Hp turbine engine. Even when you hear the LM1500 start to wind up, it's not even running until you see the heat waves coming out the back of it.
This happens when the operator opens the fuel valve at around 2,000 rpm.
In the middle of the video, when the noise in an unbearable shriek, the engine is turning just over 7000 rpm, and is blowing hot air out the jetpipe to the tune of a little more than 15 thousand horsepower.
The air flow through the engine at full power is about 150 pounds per second.
In the view of the control room screen, the numbers are as follows from left to right along the top of the screen:
EGT or Exhaust gas temperature in degrees Celsius, measured just after the last stage of the turbine, which is just behind the second green steel frame holding the engine.
Next is RPM. This engine has basically one rotating shaft, and you can just barely see the 1st stage compressor blades moving on shutdown. Engine RPM is of this common shaft, upon which all compressor and turbine stages are mounted.
5,000 rpm is idle speed for this engine.
Last, on the right, is lube oil pressure, in pounds per square inch. These engines have roller bearings, not journal bearings like a car engine, so oil pressure is mainly an indication of oil flow. A lot of flow is needed, because the oil is used as a coolant for the main bearings. The engine will run with no oil pressure, except the bearings will overheat, so monitoring of oil flow is very important.
This is the same engine you see in "Starting a large turbine engine"
Note: All references to podracers will be deleted.
If you have to ask why, it can't be explained to you.
We take a look at the fan section of a 747 engine, and find out what makes
a turbofan different than a turbojet.
Throttle Response : J79 Turbojet
We did three runs over two days of this afterburning turbojet. We were trying to isolate and correct a
transitory variation in thrust at high cruise.
We varied the power from about 60% to medium afterburner in order to fully
bracket the suspected transitory range.
This is an aircraft engine, and we are testing is because that is what we
do. S&S Turbines is a company that services industrial and exeprimental
aviation gas turbine engines.
This 8 minute video was edited from about three hours of footage taken of
all three test runs.
The cameras and I all took some hits from flying debris, but there were no
Rolls Royce Olympus
Test run: Rolls Royce Olympus at S&S Turbines open-air test cell.
One of the largest turbojet engines,
about 40 thousand Hp in the industrial version shown here.
Looking in the front at startup, you can clearly see the freshly cleaned
elements of the low-pressure compressor:
First are the struts, which hold the front main bearing firmly in place.
The LP rotating shaft is supported by this bearing.
Second, you see the copper-colored inlet guide vanes. On many engines these
are able to move, but in the Olympus they are fixed.
Then the blades of the first stage of the turning compressor shaft.
They are made of solid titanium alloy, and it took 2 days to hand polish
Next, the first stage of compression is made complete by stator vanes,
which are directly behind the spinning blades.
The Olympus is closely related to the engine used the Avro Vulcan Bomber,
and a later, uprated version was used in the Concorde. Both used four
engines, with afterburner on the Concorde. This engine does not have an
This engine is used to generate electricity. A lot of it!
Dropped into a turbine engine
Rare opportunity to demonstrate a sound that no turbine tech wants to
If you want to hear an experimental dubstep composition using this sound,
check out http://soundcloud.com/skenik and listen to "Ghost Turbine"
If you like something subterranean, subterfugal, and possibly subversive...
you'll be amazed.
Jet Engine Backyard - Episode 2 (4:3)
Link to new HQ Widescreen version of this video.
Episode 2 of a video which focuses on homebuilt and garage gas turbine /
Karls Rolls Royce Derwent is now mounted to a truck, a custom built
starting panel now makes the engine easy to manage, again we see how
impressive the Derwent is at idle and then full power.
We then move onto one of todays younger jet builders, built from infomation
gathered on the internet, this engine displays all the hallmarks of good
backyard jet design.
A invitation is detailed at the end of the video for people interested in
being part of episode 3, a sort of twisted competition for those who like a
little jet in their life.
Jet Engine Backyard - Ep 1 (4:3)
Link to new HQ Widescreen version of this video.
In 1986 two school friends made a simple backyard jet, maybe this was the
start of a life long world wide hobby.
Today jet builders around the world can easily see each others efforts in
creating backyard jet chaos.
A sure fire way to really make friends with neighbours, even ones streets
Episode 2 is now available and a invitation is posted on that video for a
oppunity to be involved in episode 3.
Jet builders and collectors around the world will enjoy this video, and
hopefully inspire others to take up the Backyard Jet hobby.
Web links :
Jet Powered Van
Dihatsu Hijet minivan fitted with a detuned RR 200 series Viper turbojet engine.
This is our 24 cylinder Detroit that we are putting in a custom 359
Peterbilt. It will use an Allison Transmission, and the engine will be in
the front of the truck. We are starting off with 40 foot 4" X 14" rectangle
rails, not sure how long it will end up being.