@HollywdPatGB Yes... The engine's HP turbine is spinning at around 8,000 and its LP turbine is running at around 4,000. The resulting exhaust is sent through a separate piece of equipment called a power turbine which turns a shaft, and the electrical generator or other load is attached to that shaft.
In my humble opinion, the finest gas turbine ever made by us Brits. It powered the Vulcan bomber, Concord, the Type 21 frigate(on which I served), Type 42 Destroyer and our Invincible Class carriers. I've probably missed a few too. Superb.
I don't know if there is a finest, but the Olympus is one of the mightiest. There's a great bit of film from a doco on the TSR2, where it puts one of its two Olympus engines in reheat, and walks away from the camera plane: a Lightning with both Avons in full afterburner.
All the LP compressor blades are titanium alloy in all of the engines we have seen so far. We don't use EPR, but for our test we measure " tailcone pressure", which is the pressure the engine produces against a calibrated exhaust restriction.
Yes, this is better. About 25% the resolution of the original footage, and maybe one percent of the impact of actually being there. N2 is the rpm of the high pressure system of this two-spool engine. Normal maximum is 8000, and today we got to 7000. Not bad for a 40,000 Hp engine. This is the most powerful, but not the loudest, engine we have tested so far...
Actually, I just watched the ending again, and in this case, you don't hear the starter ratchet, because it is on the side of the engine. The clicking in this video is the sound of the big titanium first stage compressor blades shifting in their mounts. This is normal, as the blades are mounted so they can pivot, but they can't move radially or axially.
AgentJayZ??? I was researching the recent incident involving 2 frigates in the Aegean Sea. The Greek frigate Limnos and the Turkish Kemalreis. The Greek frigate uses 2 Rolls Royce Olympus TM3B gas turbines... and I should have known that you would have a video on the R&R Olympus!!!
The Royal Navy Invincible class aircraft carriers have four Olympus fitted and use two huge David Browns gear boxes to reduce the power and allow for astern movement. Brings it down to 100,000SHP with all engines running.
The ticking is in the one-way ratchet mechanism of the starter drive. So the engine can't turn the starter... This is a turbojet engine, because it does not bypass any air around the core. Modern fighters use low ( 1:1 ) bypass turbofans. Airliners use high ( 6 or more : 1 ) bypass turbofans, and so have great honking 1st stage (fan) blades. The video from 08 is of engine #61, this video is of engine #60. They will be working half a world apart...
Great Video of a great engine! I myself have the difficulty understanding horsepower over thrust. I do know that the airborne version of this engine the Olympus 202 can produce a maximum Thrust of nearly 17000lbs. This engine powers the sole airworthy Vulcan Bomber XH558 over here in the UK of which I had the pleasure of watching its last display of the year over Rhyl in Wales. It was to fly a few more displays before finishing the 2013 season, but a fuel tank issue has ended the season early.
Thrust is the effect of pressure or force on an object. Horsepower is a measurement of power, which is the amount of work done over a specific amount of time. So for aviation thrust is the effect of the engine on the plane moving through space whereas the horsepower is the transfer of power from the fan blades to the electrical motor without any movement of the engine at all.
@BelgianEvo Thrust calculations, whether for aircraft or tugboats, is always hard to get a feel for. The power of this engine in service is easily measured, because it generates electricity. Your tug probably pulls with about 50,000 lbs or so. An airborne Olympus has about 35,000lbs of thrust, but is moving at 500 mph or so... An Olympus in a large tugboat, geared for a similar top speed as yours would pull like a 40,000 hp tugboat.
hmmmm thanks for uploading Jay. loving this olympus :) Is it the same one in the other video? Also... some questions. What causes the ticking after shutdown? is this classed as a turbofan or turbojet engine? I would have said turbojet, but i have been wrong.. some engines i have seen that look like this have been turbojets, and others that look identical from the inlet have been turbofans. I always thoght turbofans were ones with honking great blades on (like commercial jets) thanks again!!
@AgentJayZ : The tug pulls 50.000kg or 110.000lbs (calculated online because we don't use LBS here :-) I'm sure if you mount 3 of those turbines on the back of the tug and you put them in forward thrust, that the tug will still be able to go astern :-) It's indeed hard to get that you can get 40.000hp from an engine as small as that. The engines in the tug weigh about 25tonnes each..... You can see them on some of my movies :)
they seem to be used in many applications from fighters, EE lightning i think, the mighty Vulcan (series 202s) to concorde and i know royal navy ships also use them and now ive learnt they are also used in power stations.. a classic old engine..
@BelgianEvo Ah, you need to take a look at my latest video about power turbines. For a jet powered tug, to use the engines in their air-thrust configuration would be weak, because the closer the jet stream velocity is to the vehicle velocity, the higher the efficiency gets. So we don't use thrust at all, but a power turbine to get about 35,000 or more Hp out of the exhaust and into a turning shaft. Maybe then a gearbox and then a huge, slow turning prop, and now our boat can really pull.
@AgentJayZ : And yeah, the tug is only moving at aprox 15mph instead of 500mph :-) But it also hs allot of weight/water to move out of the way :) It weighs 1212542lbs or 550tonnes
was this the first video you actually got in front of the camera as agentjayz to start explaining the working of a jet engine? BTW, I am Canadian and proud to be so.
+Musicbruv .t The mesh is designed to hopefully not cause significant restriction, but as power is increased and the engine takes in more air, the screen does bow inward towards the engine, so there is some drag there. We don't measure the pressure difference, but we also don't use a screen any more.
AgentJayZ Thanks, I have heard people say why don't engine manufacturers put screens over the intakes to stop bird ingestion but since they do not do that it must be impractical.
I don't get the power output they use for jet-engines...... 40.000 hp is ALLOT. I work on a tugboat with 5500hp, and i bet it can hold back several of these jet engines just by pulling power (or thrust in case of a jetengine).... So how can this be 40.000hp? Or are the hp of a jet-engine different then diesel hp's? :)
@HollywdPatGB Yes... The engine's HP turbine is spinning at around 8,000 and its LP turbine is running at around 4,000. The resulting exhaust is sent through a separate piece of equipment called a power turbine which turns a shaft, and the electrical generator or other load is attached to that shaft.
An oldie but a goodie! Fun to review your videos from time to time; I usually pick up something new!
DD
In my humble opinion, the finest gas turbine ever made by us Brits. It powered the Vulcan bomber, Concord, the Type 21 frigate(on which I served), Type 42 Destroyer and our Invincible Class carriers. I've probably missed a few too. Superb.
I don't know if there is a finest, but the Olympus is one of the mightiest. There's a great bit of film from a doco on the TSR2, where it puts one of its two Olympus engines in reheat, and walks away from the camera plane: a Lightning with both Avons in full afterburner.
All the LP compressor blades are titanium alloy in all of the engines we have seen so far.
We don't use EPR, but for our test we measure " tailcone pressure", which is the pressure the engine produces against a calibrated exhaust restriction.
Yes, this is better.
About 25% the resolution of the original footage, and maybe one percent of the impact of actually being there.
N2 is the rpm of the high pressure system of this two-spool engine.
Normal maximum is 8000, and today we got to 7000.
Not bad for a 40,000 Hp engine.
This is the most powerful, but not the loudest, engine we have tested so far...
Actually, I just watched the ending again, and in this case, you don't hear the starter ratchet, because it is on the side of the engine.
The clicking in this video is the sound of the big titanium first stage compressor blades shifting in their mounts.
This is normal, as the blades are mounted so they can pivot, but they can't move radially or axially.
AgentJayZ??? I was researching the recent incident involving 2 frigates in the Aegean Sea. The Greek frigate Limnos and the Turkish Kemalreis.
The Greek frigate uses 2 Rolls Royce Olympus TM3B gas turbines... and I should have known that you would have a video on the R&R Olympus!!!
The Royal Navy Invincible class aircraft carriers have four Olympus fitted and use two huge David Browns gear boxes to reduce the power and allow for astern movement. Brings it down to 100,000SHP with all engines running.
The ticking is in the one-way ratchet mechanism of the starter drive.
So the engine can't turn the starter...
This is a turbojet engine, because it does not bypass any air around the core.
Modern fighters use low ( 1:1 ) bypass turbofans.
Airliners use high ( 6 or more : 1 ) bypass turbofans, and so have great honking 1st stage (fan) blades.
The video from 08 is of engine #61, this video is of engine #60.
They will be working half a world apart...
Great Video of a great engine! I myself have the difficulty understanding horsepower over thrust. I do know that the airborne version of this engine the Olympus 202 can produce a maximum Thrust of nearly 17000lbs. This engine powers the sole airworthy Vulcan Bomber XH558 over here in the UK of which I had the pleasure of watching its last display of the year over Rhyl in Wales. It was to fly a few more displays before finishing the 2013 season, but a fuel tank issue has ended the season early.
Thrust is the effect of pressure or force on an object. Horsepower is a measurement of power, which is the amount of work done over a specific amount of time. So for aviation thrust is the effect of the engine on the plane moving through space whereas the horsepower is the transfer of power from the fan blades to the electrical motor without any movement of the engine at all.
@BelgianEvo Some of the Royal Navy aircraft carriers, which are smaller than the US ones use two marine Olympus engines, and they can really move.
@BelgianEvo Thrust calculations, whether for aircraft or tugboats, is always hard to get a feel for. The power of this engine in service is easily measured, because it generates electricity.
Your tug probably pulls with about 50,000 lbs or so. An airborne Olympus has about 35,000lbs of thrust, but is moving at 500 mph or so...
An Olympus in a large tugboat, geared for a similar top speed as yours would pull like a 40,000 hp tugboat.
hmmmm thanks for uploading Jay. loving this olympus :) Is it the same one in the other video?
Also... some questions. What causes the ticking after shutdown? is this classed as a turbofan or turbojet engine? I would have said turbojet, but i have been wrong.. some engines i have seen that look like this have been turbojets, and others that look identical from the inlet have been turbofans. I always thoght turbofans were ones with honking great blades on (like commercial jets)
thanks again!!
@AgentJayZ : The tug pulls 50.000kg or 110.000lbs (calculated online because we don't use LBS here :-) I'm sure if you mount 3 of those turbines on the back of the tug and you put them in forward thrust, that the tug will still be able to go astern :-) It's indeed hard to get that you can get 40.000hp from an engine as small as that. The engines in the tug weigh about 25tonnes each..... You can see them on some of my movies :)
they seem to be used in many applications from fighters, EE lightning i think, the mighty Vulcan (series 202s) to concorde and i know royal navy ships also use them and now ive learnt they are also used in power stations.. a classic old engine..
@BelgianEvo Ah, you need to take a look at my latest video about power turbines. For a jet powered tug, to use the engines in their air-thrust configuration would be weak, because the closer the jet stream velocity is to the vehicle velocity, the higher the efficiency gets.
So we don't use thrust at all, but a power turbine to get about 35,000 or more Hp out of the exhaust and into a turning shaft. Maybe then a gearbox and then a huge, slow turning prop, and now our boat can really pull.
@skeletorphd Yes, I think you're spot on about the usefulness of a 20A10BC fire extinguisher in this case. Still, there are rules...
@AgentJayZ : And yeah, the tug is only moving at aprox 15mph instead of 500mph :-) But it also hs allot of weight/water to move out of the way :) It weighs 1212542lbs or 550tonnes
If you're talking about the Invincible class of carriers I think they use four RR Olympus engines but they run them at 25,000shp each :)
was this the first video you actually got in front of the camera as agentjayz to start explaining the working of a jet engine? BTW, I am Canadian and proud to be so.
I notice you have a mesh screen over the air intake, does this affect engine performance?
+Musicbruv .t The mesh is designed to hopefully not cause significant restriction, but as power is increased and the engine takes in more air, the screen does bow inward towards the engine, so there is some drag there. We don't measure the pressure difference, but we also don't use a screen any more.
AgentJayZ Thanks, I have heard people say why don't engine manufacturers put screens over the intakes to stop bird ingestion but since they do not do that it must be impractical.
SW6 the danger of the engine ingesting the screen means it would be less safe. Engines can handle bird ingestion typically
This video was October 2009 and you said it was the most powerful engine you guys tested, in 2015 is that still the case.?
roger brandt The Olympus and the LM2500 are both around the 20 - 25MW output, so yes, it's still true.
I don't get the power output they use for jet-engines......
40.000 hp is ALLOT. I work on a tugboat with 5500hp, and i bet it can hold back several of these jet engines just by pulling power (or thrust in case of a jetengine).... So how can this be 40.000hp? Or are the hp of a jet-engine different then diesel hp's? :)
She wants to fly!