Non Pneumatic Landing gears.
06-21-2002, 02:26 AM
#1
Non Pneumatic Landing gears.
Non Pneumatic Landing gears.
Know of any magazine or book articles on how to make retracting gear using fine pitch screws and electric motors? I have a model design in which there is not room for any of the air powered devices, and have been thinking of building a electro/mechanical type as the commercially available gears will not fit properly. Need some examples of how problems were solved.
Wm.
Know of any magazine or book articles on how to make retracting gear using fine pitch screws and electric motors? I have a model design in which there is not room for any of the air powered devices, and have been thinking of building a electro/mechanical type as the commercially available gears will not fit properly. Need some examples of how problems were solved.
Wm.
06-21-2002, 11:22 PM
#4
Minn-Flyer
I used to also have access to a 1970 vintage CNC machine. I know Autocad and had a conversion program to turn into G-Code, etc. That option is gone now.
What I have is a local friend who does lost wax castings. We are going to go as far as possible in cast aluminum, replicating a few different styles of gears.
Wm.
What I have is a local friend who does lost wax castings. We are going to go as far as possible in cast aluminum, replicating a few different styles of gears.
Wm.
06-22-2002, 05:15 PM
#5
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Non Pneumatic Landing gears.
I have some Wing Mfg electric gears that would be a good example of non-pneumatic/non-mechanical gears. And I'm relatively close to you if you want to take a look (they're not mounted but NIB)
Problem I found with them is that the plastic piece that the strut goes into is weak (made of metal, I think they're work fine) and broke when I tightened the setscrew.
They use an electric motor to turn gear reduction that eventually turns a jackscrew which causes the "trunnion" (not sure thats the right term) to move in and out.
Kraft made electric ones too, but I haven't seen them.
Problem I found with them is that the plastic piece that the strut goes into is weak (made of metal, I think they're work fine) and broke when I tightened the setscrew.
They use an electric motor to turn gear reduction that eventually turns a jackscrew which causes the "trunnion" (not sure thats the right term) to move in and out.
Kraft made electric ones too, but I haven't seen them.
06-27-2002, 01:16 PM
#9
Non Pneumatic Landing gears.
I had investigated the Unitracts line by Tony more than a year ago. The offered designs were too heavy, too bulky and not of expected rotation angle. Domestic designs were much closer, but to wrong scale.
Wm.
Wm.
