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Gore Panel (Upper and Lower) cont.
Figure 2-46.  Canopy Panel Fabrication Details

TM-10-1670-282-23P Parachute Cargo Type: 34-Foot Diameter Model G-14 Low-Velocity Cargo Parachute NSN 1670-00-999-2608 Manual
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ARMY TM 10-1670-282-23&P AIR FORCE T.O. 13C530-2 NAVY NAVAIR 13-1-33 2-24. Gore Panel (Upper and Lower) (cont). (c) Pressure-sensitive (iron-on) patch.  This method of applying a basic patch is a heat and pressure (iron-on)  technique  using  pressure-sensitive-coated  cotton  balloon  cloth.    This  method  is  limited  to  use  on  the  cotton muslin  canopies  such  as  the  34-foot  cargo  parachute.    A  complete  gore  panel  replacement  will  be  performed  when  an individual panel has been patched extensively with the pressure-sensitive patch material and an apparent stiffening of the panel occurs.  The stiffening effect may adversely affect the proper layout and packing of a parachute canopy.  Apply a pressure-sensitive (iron-on) patch as follows: 1 Smooth all wrinkles from material surrounding the damaged area. 2 Cut a piece of  pressure-sensitive-coated  cotton  balloon  cloth  large  enough  to  extend  1  inch beyond all edges of the damaged area.  If damaged area extends to a point within 1 inch of upper lateral band, only a sewn patch as outlined in (b), above, will be allowed. 3 Place  coated  cloth  patch  over  damaged  area  with  adhesive  side  facing  down.    If  damaged area has no material missing, patch will be applied to the inside of canopy only.  Whenever damaged  area  has  a  space  between  the  edges  of  material  which  indicates  that  material  is missing, patch will be applied to both inside and outside of canopy (figure 2-45). 4 Using  a  household-type  electric  iron  with  heat  regulated  for  cotton  material,  apply  heat  and pressure  simultaneously  to  patch  material  for  at  least  30  seconds.    Insure  that  all  of  patch material  is  subjected  to  heat  and  pressure,  and  that  all  edges  of  patch  have  adhered  to canopy   material.      Also   insure   that   temperature   of   iron   remains   constant   during   patch application effort and that no other part of canopy is underneath area being patched. (4) Restenciling.  As required, restencil identification markings using procedures in paragraph 2-19. b. Replace.  Replace an upper or lower gore panel which is damaged beyond repair as follows: (1) Invert the canopy to locate the inside of the damaged panel to the outside and place the canopy on a repair table. (2) Secure each of the adjacent radial tapes, the vent or skirt reinforcement, as applicable, and the upper or lower annular ring reinforcement, as applicable, to the table with pushpins. (3) Remove the affected panel by cutting the panel material at a point within 1/2 inch of the inside edge of each  radial  tape,  the  vent  or  skirt  reinforcement  (upper  or  lower  lateral  band),  as  applicable,  and  the applicable annular ring reinforcement. (4)    Make  a  1/2-inch  foldback  on  each  of  the  inside  cut  edges  and  baste  each  foldback  according  to  the basting procedures outlined in para.  2-17. (5) Cut a piece of type III 3.8-ounce cotton muslin cloth according to the applicable details in figure 2-46 and place the cloth in the original panel location. 2-70







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