N.Wood Posted September 25, 2012 Report Share Posted September 25, 2012 Would be sick for going down Tesco to get Jordan his chicken nuggets. Quote Link to comment Share on other sites More sharing options...
Pete.M Posted September 25, 2012 Report Share Posted September 25, 2012 (edited) so they made the intake pressure 2 bar but kept a turbo output pressure of 4 bar Do you know how they went about controlling that pressure drop? I'm struggling to get my head around it, and can't find too much online. Was it possibly the Cosworth GBA 1.5L V6? The pressure must drop to some extent due to the temperature drop when passing through the intercooler. (Thinking out loud) I can't figure out the disadvantage, if there was one, to this system. Argh, SO MANY QUESTIONS Edited September 25, 2012 by Pete.M Quote Link to comment Share on other sites More sharing options...
hI-OOPS-CAPS Posted September 25, 2012 Report Share Posted September 25, 2012 How much more efficient will these SABRE engines really be compared to typical current jet engines when attached to a jumbo? Are we looking at as much as 50% more efficient? A typical jet engine might be around 20% efficient. Modern ones may reach 25% or even higher. A rocket engine is about 60% efficient due to higher temperatures. it would be interesting to see this engine's efficiency. Quote Link to comment Share on other sites More sharing options...
RobinJI Posted September 25, 2012 Report Share Posted September 25, 2012 (edited) Do you know how they went about controlling that pressure drop? I'm struggling to get my head around it, and can't find too much online. Was it possibly the Cosworth GBA 1.5L V6? The pressure must drop to some extent due to the temperature drop when passing through the intercooler. (Thinking out loud) I can't figure out the disadvantage, if there was one, to this system. Argh, SO MANY QUESTIONS It could well be that engine it would have been a small V6 for sure. Unfortunately I don't know anymore of the technical side of it, it was just something he mentioned in an engine-tech lecture, he had a habit of going off on rambling tangents about his past when he was meant to be teaching us, interesting but a bit annoying when it came to the exams and you were only part way through the material! I can't figure out how they achieved the drop either, like you say, there'd be some through the intercooler, but then how they managed the rest is beyond me, the only method I can think of are to use a flow restriction, but then that would have some big downsides. I might see if a mates got a dictaphone recording of the lecture, in case he went into detail I can't remember. JMCD: You fail at allowing your self to know things... Edited September 25, 2012 by RobinJI Quote Link to comment Share on other sites More sharing options...
Pete.M Posted September 25, 2012 Report Share Posted September 25, 2012 Cheers Robin, I'm very tempted to use that pressure drop idea as a basis for my 4th year project... It would take a lot of reading though! Quote Link to comment Share on other sites More sharing options...
aener Posted September 25, 2012 Report Share Posted September 25, 2012 (edited) The noise that thing makes is soooooo cool Whilst I don't disagree, and it's slightly off topic, I have to point out that no engine will EVER sound more bad-ass than this: Edit: Do yourself a favour and turn the volume up Edited September 25, 2012 by aener Quote Link to comment Share on other sites More sharing options...
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