Ship launching


by Kramjit
Tags: launching, ship
Kramjit
Kramjit is offline
#1
Jan15-08, 09:16 PM
P: 10
Hi!

I saw from youtube clips that dry dock ship launching use these wooden(?) contraptions. Do they cause damage to the paint coat of the ships?

Thanks
Phys.Org News Partner Science news on Phys.org
Simplicity is key to co-operative robots
Chemical vapor deposition used to grow atomic layer materials on top of each other
Earliest ancestor of land herbivores discovered
mgb_phys
mgb_phys is offline
#2
Jan15-08, 09:49 PM
Sci Advisor
HW Helper
P: 8,961
No thats why you use wood.
The boats don't generally slide on the wood, the sit on cradles that slide on greased rails.
Kramjit
Kramjit is offline
#3
Jan16-08, 01:00 AM
P: 10
Quote Quote by mgb_phys View Post
No thats why you use wood.
The boats don't generally slide on the wood, the sit on cradles that slide on greased rails.
So you are saying that there is not a slightest damage to the coating in all cases?

Thanks

Integral
Integral is offline
#4
Jan16-08, 03:03 AM
Mentor
Integral's Avatar
P: 7,291

Ship launching


Quote Quote by Kramjit View Post
So you are saying that there is not a slightest damage to the coating in all cases?

Thanks
What do you propose that they use to cause LESS damage?
Kramjit
Kramjit is offline
#5
Jan16-08, 04:54 AM
P: 10
Perhaps we could use a material with low coefficient of friction as a material for the ramp, as described by Mr./Mdm mgb_phys. Eliminate also, altogether, the use of grease.
Fundamentally, I just would like to know if existing methods scratch the paintwork.

Thanks
RonL
RonL is offline
#6
Jan16-08, 07:23 AM
PF Gold
P: 701
It's been over 30 years, but when i had some involvement with boat building(intracoastal, and river pushboats) the below waterline coatings, were mixes of paints and resins, and some flourlike metals, that had to be continually stirred with a air motor while in the paintpot.
These finishes, when cured, were as hard or harder than the metal they covered.

Not sure but i would think that finishes today might be even better.


Register to reply

Related Discussions
marker lid launching General Physics 1
Launching a UAV.... Mechanical Engineering 4
Projectile Launching Introductory Physics Homework 4
Launching device Mechanical Engineering 0
launching a ball on a ramp Introductory Physics Homework 1