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Its better to have the pipe spacings much closer in a heat pump installation. Some installations have a maximum spacing of 150mm down to as close as 100mm. Yep. Its a hell of a lot of pipework. Then the heating flow temperature can be dropped lower and still maintain comfort...

Diyitall wrote We don't have a plane on this post. :wink:

Diyitall wrote I never said you did. How do you arrive at this conclusion ?. More nonsensical rubbish. :roll:

The thrust is totally relevant to the original question which is what this argument is about. Define speed ?

Softus wrote I understand his point perfectly but to agree to what he is saying you would need to re-arrange the original question. Diyitall wrote The only relevant part IMO is the original question. If you want to persuade Softus to write a new one to suit your argument...

Diyitall wrote Yep. Nonsensical is an apt description indeed. Again no definition of wheel speed in relation to the belt speed is given for diyitall to arrive at this conclusion. :(

Diyitall wrote It has everything to do with the original post thats for sure. :wink: Most likely not this one though. :( This is where you are wrong as you cannot define the speed of the wheel in relation to the conveyor as the definition was not clearly stated in the original...

sooey wrote Most of what you have written makes sense except you have confused traction with friction. :(

When he defines more clearly what he means by speed in relation to the original question then I consider my out of context quote entirely justifiable.

Diyitall wrote Then he wrote..... :roll:

Incorrect. If the aircraft moves forward from a fixed point on the ground at 1 mph due to the engines providing a controlled thrust then a good control system will revolve a fixed point on a conveyor at exactly the same speed from the fixed point on the ground in the opposite...

Diyitall wrote Can you explain how they are at the same speed whilst the airplane is accelerating and moving forward ?. Do you mean rpm or motion from a fixed point on the ground ?. The surface in relation to the airplane is the ground . Not the conveyor surface. When you...

This is nonsense. :roll: Since when did an aircraft need traction in order to take off ?. Define speed in relation to the original question ?

Tell me something I don't know. :roll: Can you define speed in relation to the original question or not ?.

The aircraft will move. Its already travelling at 1mph in relation to a fixed point on the ground. Start up the conveyor and the wheel rpm increases. Now that question again. Define speed in relation to the original question ?.

Whats the matter ?. Question too difficult ?.

tim west wrote :lol: :lol:

Define speed in relation to the original question ?.

Diyitall wrote This is a good definition relating to two cars travelling up a motorway but completely irellevant to the plane on a conveyor question. Define speed in relation to the original question ?.

Whats the matter ?. Question too difficult ?.