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#4613675 - 12/25/17 08:18 AM One of lifes mysteries solved!
Chris142 Offline


Registered: 06/05/03
Posts: 16820
Loc: Deplorable in apple valley, ca
We just landed and have a 2hr wait till our next flight. I had a seat with a window. I can say that airplane wheels are NOT spinning when a plane lands. They go from 0mph to fast in a split second!

Something I have wondered about for 40 years.
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
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#4613681 - 12/25/17 08:23 AM Re: One of lifes mysteries solved! [Re: Chris142]
Kruse Offline


Registered: 10/05/05
Posts: 4295
Loc: Kansas
Not to worry you, but I think a Concorde plane had issues one time because of tires.

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#4613693 - 12/25/17 08:44 AM Re: One of lifes mysteries solved! [Re: Chris142]
Quattro Pete Offline


Registered: 10/30/02
Posts: 35863
Loc: Great Lakes
Originally Posted By: Chris142
Something I have wondered about for 40 years.

You could have just asked. smile
_________________________
'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (FF)

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#4613696 - 12/25/17 08:46 AM Re: One of lifes mysteries solved! [Re: Chris142]
Astro14 Offline


Registered: 10/10/10
Posts: 8536
Loc: Virginia Beach
Originally Posted By: Chris142
We just landed and have a 2hr wait till our next flight. I had a seat with a window. I can say that airplane wheels are NOT spinning when a plane lands. They go from 0mph to fast in a split second!

Something I have wondered about for 40 years.


That was a mystery?

Now that you know that, you may be interested to know that, on many airplanes, when the landing gear are retracted, the brakes are applied to stop the tires from spinning. This eliminates gyroscopic forces on the hydraulic system and gear itself during retraction....
_________________________
32 Packard 15W40
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#4613697 - 12/25/17 08:46 AM Re: One of lifes mysteries solved! [Re: Chris142]
Eddie Offline


Registered: 12/07/03
Posts: 9566
Loc: Florida, Cape Coral
You are very observant Chris142. Now you can finally sleep nights know the problem has been solved:-)) Ed
_________________________
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#4613711 - 12/25/17 08:59 AM Re: One of lifes mysteries solved! [Re: Chris142]
jonnied1 Offline


Registered: 10/16/16
Posts: 126
Loc: WV
I was a crew chief on B-52's and KC-135 tankers in the 70's. We didn't call the tire shop out to change the tires until they started going "thump-thump-thump-thump".

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#4613719 - 12/25/17 09:11 AM Re: One of lifes mysteries solved! [Re: Kruse]
tig1 Offline


Registered: 01/03/09
Posts: 13661
Loc: Illinois
Originally Posted By: Kruse
Not to worry you, but I think a Concorde plane had issues one time because of tires.


I believe they ran over something on the runway.
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#4613728 - 12/25/17 09:24 AM Re: One of lifes mysteries solved! [Re: Chris142]
tcp71 Offline


Registered: 08/12/13
Posts: 275
Loc: Alberta

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#4613731 - 12/25/17 09:33 AM Re: One of lifes mysteries solved! [Re: Astro14]
AZjeff Offline


Registered: 01/14/11
Posts: 2642
Loc: PV Az
Originally Posted By: Astro14
Now that you know that, you may be interested to know that, on many airplanes, when the landing gear are retracted, the brakes are applied to stop the tires from spinning. This eliminates gyroscopic forces on the hydraulic system and gear itself during retraction....


And I always suspected the gyro forces might help the big jets go up faster...
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Why know when you can guess?!


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#4613735 - 12/25/17 09:39 AM Re: One of lifes mysteries solved! [Re: Quattro Pete]
Chris142 Offline


Registered: 06/05/03
Posts: 16820
Loc: Deplorable in apple valley, ca
Originally Posted By: Quattro Pete
Originally Posted By: Chris142
Something I have wondered about for 40 years.

You could have just asked. smile
nobody I asked knew
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

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#4613742 - 12/25/17 10:00 AM Re: One of lifes mysteries solved! [Re: Chris142]
Astro14 Offline


Registered: 10/10/10
Posts: 8536
Loc: Virginia Beach
Originally Posted By: Chris142
Originally Posted By: Quattro Pete
Originally Posted By: Chris142
Something I have wondered about for 40 years.

You could have just asked. smile
nobody I asked knew

Well...try Bitog next time you've got a question, then!

grin
_________________________
32 Packard 15W40
02 Volvo V70 T5 0W40 M1
02 Volvo V70 XC 0W40 Edge
05 MB S600 0W40 M1
16 Tundra 1794 5W30 Valvoline

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#4613743 - 12/25/17 10:01 AM Re: One of lifes mysteries solved! [Re: tcp71]
Kestas Offline



Registered: 06/04/02
Posts: 12330
Loc: The Motor City

I remember seeing one concept of having vanes on the tires to get them to speed and prevent the initial skid on landing. I guess that idea never caught on.

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#4613745 - 12/25/17 10:02 AM Re: One of lifes mysteries solved! [Re: Astro14]
FlyNavyP3 Offline


Registered: 07/04/16
Posts: 1407
Loc: Jacksonville, FL
Originally Posted By: Astro14
Originally Posted By: Chris142
We just landed and have a 2hr wait till our next flight. I had a seat with a window. I can say that airplane wheels are NOT spinning when a plane lands. They go from 0mph to fast in a split second!

Something I have wondered about for 40 years.


That was a mystery?

Now that you know that, you may be interested to know that, on many airplanes, when the landing gear are retracted, the brakes are applied to stop the tires from spinning. This eliminates gyroscopic forces on the hydraulic system and gear itself during retraction....


I find it interesting how different aircraft accomplish the act of slowing the tires upon gear retraction. On the P-3 the main mounts had a shuttle valve that applied the brakes upon gear retraction, the nose gear had an "aero" brake that sat very close to the nose tires upon full retraction that used the air near the tires to slow rotation. The P-8 also applies the brakes on the main mounts to stop the tires upon hear retraction, the nose gear has a pair of pads that are spring loaded that act on the tires to stop them with direct friction on the tire itself.
_________________________
Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander

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#4613758 - 12/25/17 10:16 AM Re: One of lifes mysteries solved! [Re: Chris142]
Quattro Pete Offline


Registered: 10/30/02
Posts: 35863
Loc: Great Lakes
Originally Posted By: Chris142
Originally Posted By: Quattro Pete
Originally Posted By: Chris142
Something I have wondered about for 40 years.

You could have just asked. smile
nobody I asked knew

Google knows... smile

https://www.wired.com/2016/08/airplane-tires/
_________________________
'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (FF)

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#4613761 - 12/25/17 10:22 AM Re: One of lifes mysteries solved! [Re: Astro14]
Papa Bear Offline


Registered: 08/11/05
Posts: 7050
Loc: Leamington, ON, Canada ..... r...
Originally Posted By: Astro14
Originally Posted By: Chris142
Originally Posted By: Quattro Pete
Originally Posted By: Chris142
Something I have wondered about for 40 years.

You could have just asked. smile
nobody I asked knew

Well...try Bitog next time you've got a question, then!

grin


Astro, put that smart phone down and get back to flying the plane. cool
_________________________
2016 Dodge GC Deep Cherry
2013 SYM Wolf Classic
2011 Suzuki S40
https://www.hogsforhospice.com/

Friend of Bill W. since '89


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