Author Topic: Aircraft question... (Read 584 times)

Hortlund · « **on:** November 29, 2007, 01:56:51 PM »

Anyone got the roll-rates for the Me109K4 and the P47C? All I managed to dig up in that area was the sustained turn-rate.

Airscrew · « **Reply #1 on:** November 29, 2007, 03:35:33 PM »

Are the tire inflated or deflated? ... rolls better on inflated tires...

BaldEagl · « **Reply #2 on:** November 29, 2007, 04:14:56 PM »

Might want to post this in the Aircraft and Vehicle forum.

Dago · « **Reply #3 on:** November 29, 2007, 04:15:45 PM »

Quote

Originally posted by Airscrew
Are the tire inflated or deflated? ... rolls better on inflated tires...

Don't forget, roll rates vary depending on the wind against the nose, or with the tail. Tires pressures are only half the equation.

Chairboy · « **Reply #4 on:** November 29, 2007, 04:17:48 PM »

Why would the 'wind against the nose' affect the roll rate? Plane doesn't care how fast it's moving over the ground, just through the air.

Dago · « **Reply #5 on:** November 29, 2007, 04:20:23 PM »

Quote

Originally posted by Chairboy
Why would the 'wind against the nose' affect the roll rate? Plane doesn't care how fast it's moving over the ground, just through the air.

Sure it does, it rolls faster down the runway or taxiway if the wind is pushing it. If the wind is pushing against it, it takes more power to get it rolling, and it will roll slower.

To help with your grasp of the tangent, I will say "it is harder to get it rolling with flat tires".

Airscrew · « **Reply #6 on:** November 29, 2007, 04:48:35 PM »

Quote

Originally posted by Dago
Sure it does, it rolls faster down the runway or taxiway if the wind is pushing it. If the wind is pushing against it, it takes more power to get it rolling, and it will roll slower.

To help with your grasp of the tangent, I will say "it is harder to get it rolling with flat tires".

also dont forget roll rates can be affected depending on the positive or negative degree of incline (if any) of the surface upon which the plane is rolling...

Chairboy · « **Reply #7 on:** November 29, 2007, 05:05:57 PM »

Roll rate is how fast the aircraft can change it's roll attitude. Aileron rolls, for instance. It has nothing to do with the amount of runway needed to take off, silly.

I assume Hortlund is looking for a figure like how many degrees per second those planes can roll.

Airscrew · « **Reply #8 on:** November 29, 2007, 05:14:54 PM »

"Attention K-Mart shoppers, we are having a blue light special on isle 4, Clue-rakes only $19.95"

FBplmmr · « **Reply #9 on:** November 29, 2007, 05:17:04 PM »

Quote

Originally posted by Airscrew
also dont forget roll rates can be affected depending on the positive or negative degree of incline (if any) of the surface upon which the plane is rolling...

I disagree. The roll rate is always directly proportional to the speed of the conveyor belt.

Shuffler · « **Reply #10 on:** November 29, 2007, 05:37:03 PM »

Factor in .....

1) deer and other wildlife aka roadkill

2) daytime or night (temperature)

3) summer or winter (same)

4) has the pusher just ate

5) how much sleep the pusher has had

6) physical condition of the pusher

7) surface type

8) surface condition

Chairboy · « **Reply #11 on:** November 29, 2007, 05:42:53 PM »

Bastages! I've been hooked again. Obviously I'm bringing baggage over from battling nincompoops over on the AOPA forum.

Jackal1 · « **Reply #12 on:** November 29, 2007, 06:11:29 PM »

Quote

Originally posted by Airscrew
"Attention K-Mart shoppers, we are having a blue light special on isle 4, Clue-rakes only $19.95"

Just sold one to the goofy looking guy in the back with the "Imma Pilit" T-shirt on.

Jackal1 · « **Reply #13 on:** November 29, 2007, 06:18:11 PM »

Quote

Originally posted by AKIron
Which way is the conveyor belt spinning?

Backwards.

AKIron · « **Reply #14 on:** November 29, 2007, 06:19:35 PM »

Quote

Originally posted by Jackal1
Backwards.

I posted before I saw FBplmmr beat me to it.