No it didn't Roj - you got friggin old like the rest of us :eek:

Jindy.......He's always been old compared to you and me:ok:

Lightning Mate

No, that is another lie to children. Don't presume, check. I go with Newton not Bernoulli. See below:

How Airplanes Fly

Fox 3

1. Yes, heard that. Very funny.

2. Not pontificating. Perhaps you should be not so set in your assumptions. Greater knowledge leads to greater understanding.

3. More important is relationship between lift and drag (Cl/Cd), which directly relates to Total Reaction.

4. Hardly being superior. Maybe you have not heard the expression 'Lies to children' before. The link below is interesting. I admit that I am not a student of Wittgenstein - more a student of T Pratchett, and I first read about the concept in 'The Science of Discworld'. Valid nonetheless.

Lie-to-children - Wikipedia, the free encyclopedia

Ah!, Hadn't read the Pratchett thing. Many thanks- I had a chat with him about 3 years ago. Very interesting guy.

Still think you are flogging a dead horse with the total reaction thing. Always best to answer in a context people already understand,and not to appear too clever .

Remember a question on Hawk Groundschool exam.

'Does pressure increase or decrease in a convergent nozzle?'

Me: "Sir, it depends. Is the flow subsonic or supersonic?"

QFI "If you're smart enough to ask that, then you're smart enough to know the answer they want"

Wound my neck in after that!