GusBiz
Well Known Member
so this may fly in the face of lots of opinion here, but after much research and study on the true nature of drag I have come to realise that things are not as straight forward as first thought.
My question is;
"Is the snorkel/Airscoop under the cowl actually doing you any good performace wise?"
So most would say well of course it is you ignorant fool, can't you see the little hole where all they good air can get pushed into the engine giving you more oxidation of fuel and more Manifold presure and greater power at altitude, not to mention the speed increase it gives you while looking at it on the ramp....!!
Yes, I agree I thought that too, so looking at how this works I thought about this. I am going to assume that the manifold presure readings people are seeing (an inch or more with the scoop ) is real and I am ignoring all engine config variables.
So you have more presure, great. That supposedly gives you more air to which you burn more fuel and get more horses right?.......
......and that is where it gets ugly. I thought hold on here I am at 14k feet and I am leaning it like a demon, and putting in as small amount of fuel as I can and I am trying to put more air in there to burn more? Well I guess that will mean I am able to get more power than I would at 14k feet so instead of just 60% power I am what 63% power?
This made me think well how much more because that is relevant. Why so, because the scoop is sticking out there taking on parasitc drag so that HP increase doesn't come for free, could it be that what is happening is that we are getting an incread in engine HP at a cost of drag reduction which at top speed at max cruise is actually considerable and could be more than the engine power.
Could we be getting less power out of our engines than the cost in drag at high speeds?
My question is;
"Is the snorkel/Airscoop under the cowl actually doing you any good performace wise?"
So most would say well of course it is you ignorant fool, can't you see the little hole where all they good air can get pushed into the engine giving you more oxidation of fuel and more Manifold presure and greater power at altitude, not to mention the speed increase it gives you while looking at it on the ramp....!!
Yes, I agree I thought that too, so looking at how this works I thought about this. I am going to assume that the manifold presure readings people are seeing (an inch or more with the scoop ) is real and I am ignoring all engine config variables.
So you have more presure, great. That supposedly gives you more air to which you burn more fuel and get more horses right?.......
......and that is where it gets ugly. I thought hold on here I am at 14k feet and I am leaning it like a demon, and putting in as small amount of fuel as I can and I am trying to put more air in there to burn more? Well I guess that will mean I am able to get more power than I would at 14k feet so instead of just 60% power I am what 63% power?
This made me think well how much more because that is relevant. Why so, because the scoop is sticking out there taking on parasitc drag so that HP increase doesn't come for free, could it be that what is happening is that we are getting an incread in engine HP at a cost of drag reduction which at top speed at max cruise is actually considerable and could be more than the engine power.
Could we be getting less power out of our engines than the cost in drag at high speeds?