A Wednesday conundrum

[Hilts]

OK here's an easy one. In a still wind at max power would this plane take-off from Liverpool John Moore's

[motco]

Of course! It'll drift away on the pot fumes

[eccles]

Hilts said:

OK here's an easy one. In a still wind at max power would this plane take-off from Liverpool John Moore's

max power with what? its got no engines!

[Eric Mc]

John Moore's?

I thought it was called after a different John (although I still always think of it as "Speke".

[Hilts]

Eric Mc said:

John Moore's? I thought it was called after a different John (although I still always think of it as "Speke".

It's all academic Eric.

[Eric Mc]

OK - who is John Moore?

[physicist steve]

ZR1cliff said:

physicist steve said: ZR1cliff said: pdV6 said: ZR1cliff said: I thought it was thrust versus height that kept it going forward and Kinetic energy is stored within the metal itself? Kinetic energy is the energy you have by virtue of the velocity you are travelling at. Its not "stored" anywhere as such, its just an attribute of moving. Ime confused here ,I always thought Kinetic energy was a consequence of twisting a metal which stored up energy in the twist that was released when the pressure was off,is this not used in helicopters so the revs dont drop on gear change? Stored energy is potential energy potential energy can be in many forms fuel is a store of chemical potential energy kinetic energy is movement energy kinetic energy can be rotational (turning), translational (linear movement) or both. Energy stored in deformed objects is elastic potential energy eg a spring or twisted metal. So when there is a gearchange resulting in loss of linear energy the metal untwists to take up the slack caused by the loss of torque momentarily therefore keeping the revs up? I remember reading that they were looking to introduce this into F1 to stop power loss during gearchanges.

Interesting - I had not heard of this before. I'll bring it up with my upper sixth pupils as we are about to start an experiment on tortional pendulums tomorrow!

[Hilts]

Eric Mc said:

OK - who is John Moore?

Not sure, I've only been to Liverpool once and they got my wheeltrims, wing mirrors and roof aerial.

I didn't think we went below 50 either.




John Moore - I think they named a University after him or was it an airport

[whatever]

John Moores founded Littlewoods (stores & pools). Was also chairman and funder of Everton Football Club (the Moores famkily have more recently (via his son) supported Liverpool.

TUFKA Liverpool Polytechnic was renamed to honour him.


The airport is, of course, now (rather comically) renamed to honour John Lennon. Most people I know still refer to it as Speke.

[whatever]

xm5er said:

whatever said: I think that I'm devoting too much time to this... Yes, me too. Read the question again, it states that the speeds is matched, not the force.

Good point.

Hey - I think it'll take off, I'm just trying to think of a scenario where it wouldn't...

[kenny chim 4]

My answer to this (when the question was last posed) is a few posts down on this page from the original thread:
www.pistonheads.com/gassing/topic.asp?p=18&f=&t=227367&h=0

What I didn't mention at the time was that I had asked an aero engineer pal that I'd met in the pub that Sunday afternoon