Method of producing missile nose cones
A method for producing a missile nose cone is disclosed. The method consists of manufacturing a first missile nose cone from a first lot of polymeric material and determining a first rupture value. The method further consists of manufacturing a second missile nose cone from a second lot of polymeric material and determining a second rupture value of the second missile nose cone. Both first and second lots of material are mixed into a test batch with one another based on their associated rupture values. An evaluation missile nose cone is then manufactured from the test batch and a determination is made as to whether the evaluation missile nose cone has a desired rupture value. If a desired rupture value is not obtained, then the mixing and evaluation steps are repeated.
1. A method for producing a missile nose cone, comprising:
manufacturing a first missile nose cone from a first lot of polymeric material and determining a first rupture value of said first missile nose cone;
manufacturing a second missile nose cone from a second lot of polymeric material and determining a second rupture value of said second missile nose cone;
mixing into a test batch said first and second lots of material with one another based upon said rupture values;
manufacturing an evaluation missile nose cone from said test batch; and
determining whether said evaluation missile nose cone has a desired rupture value.
2. The method according to claim 1 , further comprising:
cutting a hoop section from each said first and second missile nose cones and determining said rupture values from said hoop sections.
3. The method according to claim 2 , further comprising:
positioning said hoop sections into a test fixture which comprises a bladder received within said hoop section, wherein said bladder is expanded until said hoop section ruptures.
4. The method according to claim 1 , further comprising:
designating said lot of polymeric material with a higher comparative rupture value as a dominant resin; and
designating said lot of polymeric material with a lower comparative rupture value as a dilutent resin.
5. The method according to claim 4 , further comprising:
selecting percentage amounts of said dominant and dilutent resins for mixing into said test batch based upon rupture values of each said lot.
6. The method according to claim 5 , further comprising:
cutting a hoop section from said evaluation missile nose cone manufactured from said test batch.
7. The method according to claim 6 , further comprising:
repeating selecting and determining steps until a desired ratio of dominant and dilutent resin obtains said desired rupture value.
8. The method according to claim 7 , further comprising:
fully mixing said first and second lots in said desired ratio; and
manufacturing missile nose cones with said fully mixed lot.
9. The method according to claim 1 , further comprising:
designating said desired rupture value as being between two values.