New Kermie Cam (TP-40N part 3)

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AKar
A2A Mechanic
Posts: 4517
Joined: 26 May 2013

Re: New Kermie Cam (P-51D part 3, must watch!)

Post AKar »

MarcE wrote:if the bay doors require a locked landing gear to close, ok... but otherwise, how could that be seen?
Again, not knowing the Mustang, but typically there are good cues. If the landing gear cycles correctly while retaining a single bad indication, it moves the bets towards an indication problem. If the landing gear is symmetrically, and rigidly, in correct position, and doesn't move around, it probably is locked. An exception to this is mechanically-driven landing gear, typically using screw-drive: Piper Comanche, Mitsubishi MU-2, and Focke-Wulf Fw 190 come to mind quickly, but these generally don't collapse as readily, if just a bit short of "locked" position (if actual locks are used at all). A hydraulic landing gear tends to move around if it wasn't locked in place. You mention the doors; in cases mechanically actuated sequencing valves are used to close the doors when the gear reaches some given position; these may or may not give some additional info of the situation.

Further, in many airplanes, the downlock condition is achieved by the geometry of sidebrace. This is more or less visible from the ground. In case of P-51, it appears that the landing gear downlock is achieved by a spring-loaded pin that locks the pivot shaft arm. This would not be directly visible from ground most certainly, so one would need to make a guess based on how solid the leg seems.

-Esa

Alfredson007
Technical Sergeant
Posts: 519
Joined: 16 Feb 2011
Location: Finland

Re: New Kermie Cam (P-51D part 3, must watch!)

Post Alfredson007 »

I love kermit's videos but a little dissapointing to see that the viewing angle was not as awesome as it was with the C mustang where you could see the feet and hands in action pretty well. Generally speaking when it comes to aviation videos inside the plane i am more interested what happens inside the plane rather than outside :D Great video nevertheless.

MarcE
Master Sergeant
Posts: 1128
Joined: 27 Jun 2009
Location: Southern Germany

Re: New Kermie Cam (P-51D part 3, must watch!)

Post MarcE »

AKar wrote:
MarcE wrote:if the bay doors require a locked landing gear to close, ok... but otherwise, how could that be seen?
Again, not knowing the Mustang, but typically there are good cues. If the landing gear cycles correctly while retaining a single bad indication, it moves the bets towards an indication problem. If the landing gear is symmetrically, and rigidly, in correct position, and doesn't move around, it probably is locked. An exception to this is mechanically-driven landing gear, typically using screw-drive: Piper Comanche, Mitsubishi MU-2, and Focke-Wulf Fw 190 come to mind quickly, but these generally don't collapse as readily, if just a bit short of "locked" position (if actual locks are used at all). A hydraulic landing gear tends to move around if it wasn't locked in place. You mention the doors; in cases mechanically actuated sequencing valves are used to close the doors when the gear reaches some given position; these may or may not give some additional info of the situation.

Further, in many airplanes, the downlock condition is achieved by the geometry of sidebrace. This is more or less visible from the ground. In case of P-51, it appears that the landing gear downlock is achieved by a spring-loaded pin that locks the pivot shaft arm. This would not be directly visible from ground most certainly, so one would need to make a guess based on how solid the leg seems.

-Esa

thanks, this makes it generally clearer! =)
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maxonly
Airman
Posts: 44
Joined: 14 Jan 2015
Location: The Netherlands

Re: New Kermie Cam (TP-40N part 1)

Post maxonly »

Updated the first post with part 1 of the TP-40N.
Image

Dogsbody55
Senior Master Sergeant
Posts: 1587
Joined: 26 Aug 2013
Location: Perth, W. Aust

Re: New Kermie Cam (TP-40N part 1)

Post Dogsbody55 »

Thanks. Looking forward to the remaining videos on the TP-40N.


Cheers,
Mike
ImageImageImageImage

maxonly
Airman
Posts: 44
Joined: 14 Jan 2015
Location: The Netherlands

Re: New Kermie Cam (TP-40N part 2)

Post maxonly »

Updated the first post with part 2 of the TP-40N.
Image

maxonly
Airman
Posts: 44
Joined: 14 Jan 2015
Location: The Netherlands

Re: New Kermie Cam (TP-40N part 3)

Post maxonly »

Updated the first post with part 3 of the TP-40N.
Image

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