MMC Winged Extended Range Advanced Projectile

Period of Performance: 05/12/2000 - 11/12/2000


Phase 1 SBIR

Recipient Firm

Triton Systems, Inc.
200 Turnpike Road Array
Chelmsford, MA 01824
Principal Investigator


Triton Systems, Inc. (TSI) proposes to develop a hybrid continuous fiber aluminum matrix composite (AMC) polymer matrix composite (PMC) material to join an AMC folding wing to the casing of a gun launched modified ERGM round to attain extended range. TSI has teamed with Custom Analytical Engineering Systems (CAES) who will provide design and systems level expertise for this effort. A ceramic fiber reinforced metal matrix composite wing is proposed that will fold around the projectile casing inside a sabot and deploy when the sabot is discarded after firing. The stiff, thin, metal matrix composite will provide an increased lift to drag ratio to the munition and will leave most of the rocket motor bay available for the an increase in warhead size. A slight decrease in the outside diameter of the projectile will be necessary to allow for the sabot and the wings within the 5-in- bore of the barrel. The hybrid composite will also enable the PMC munitions casing to be more efficiently joined to the end fittings. It is anticipated that the hybrid joint will permit the compressive load on the munitions casing to be significantly increased, allowing for more setback G's and a higher muzzle velocity. The hybrid PMC MMC joint proposed for development under this program has an extensive array of potential commercial applications. Joining PMC's to standard fittings for assembly is the classic problem associated with utilizing PMC materials. This program proposes to develop the solution to integrate near net shape cast MMC materials to PMC's in load bearing structures. A few applications include missile casing end fittings, space truss tube end fittings, bicycle frame fittings, automobile frames, bodies and joints, drive shaft end fittings, propeller hub assemblies and airframe components of all kinds.