Flow liner eliminates high-cycle fatigue in ducts carrying cryogenic fluids. It is capable of handling two-directional, high-velocity cryogenic liquid flow with a 3-inch axial motion without binding within a 25-inch length

Bissing, L. L.

Innes, G. M.

English

NASA Technical Reports Server

April 1970	 Brief 70-10166 
NASA TECH BRIEF 
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage commercial 
application. Tech Briefs are available on a subscription basis from the Clearinghouse for Federal Scientific and Technical 
Information, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology U tilization Division, NASA, Code UT, Washington, D.C. 20546. 
Two-Directional-Flow, Axial-Motion-Joint Flow Liner 
0wsSecon 
iNHY 
Snffeniig	 I 
S	 Beads
^
11 Inside Diameter
'Bellows Section 
Fill Flow 
K I • 
	
Flow Lrner	 T41-
7Axial - Motion Joint StaggeredPressure 
Reduction Holes
;8 ­ Inside Diameter 
Bellows Section
	
Non-Binding Support	 - 
	
Bead	 --
	
Liner Stop
	 i	 I	 lAxal 
	
(Compressed	 Drain Flow	 I jMotion 
Position) 
Two-Directional-Flow, 8' Diameter,
Axial-Motion-Joint Flow Liner
The problem: 
To design a flow liner capable of eliminating high-
cycle fatigue in ducts carrying cryogenic fluids. 
The solution: 
Use a 3-inch axial motion joint consisting of two end 
bellows sections of 8-inch inside diameter and an 
intermediate section of Il-inch inside diameter. 
How it's done: 
The flow liner is designed for limited axial motion 
of the duct with structural stability by use of stiffening 
ring beads and a non-binding bead. This configuration 
is capable of handling two-directional, high-velocity 
cryogenic liquid flow with a 3-inch axial motion with-
out binding within a 25-inch length. Staggered holes 
within the liner wall reduce the pressure gradient, and 
the liner isolates the inner surfaces of the bellows 
from the high velocity fluid flow. 
Note: 
No additional documentation is available. Specific 
questions, however, may be directed to: 
Technology Utilization Officer 
Marshall Space Flight Center 
Huntsville, Alabama 35812 
Reference: B70-10166 
Patent status: 
No patent action is contemplated by NASA. 
Source: George M. lnnes and Lloyd L. Bissing of 
Space Division 
North American Rockwell Corporation 
under contract to 
Marshall Space Flight Center 
(MFS-16215) 
Category 06 
Ihi document ss.i prepared under the sponsorship of Ihe National 	 (iiseriinicnt .isuires an\ liahilits resultin g
 from the ue of the 
Aeronautics and Space Administration. Neither the United States	 inlorinat i on contained in this docutitent, or warrants that such use 
Government nor any person acting on behalf of the United States 	 will be free from privately owned rights.
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Two-directional-flow, axial-motion-joint flow liner

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