Spotlight Projects:

The Hopper Engineering Associates team provides practical and exciting solutions to unique problems in several industries. To showcase our recent work we choose a project of the month. An archive of previous winners can be found here.

July 2009 Project:

C-130 Paratroop Door Structural Evaluation for Firefighting Equipment Loads
Paratroop Door Structural Evaluation

Demonstrate the structural adequacy of the C-130 aircraft paratroop door when used for firefighting missions. The outlet nozzle of the foam spray system passes through the door, causing drag force loading in combination with internal pressure and inertial loads.


A detailed finite element model of the door in combination with hand calculations was used to confirm the structural adequacy of the door for combined operating loads.

HEA has completed numerous jobs similar to the one shown above (Similar Projects)