Project:
Perform all engineering tasks for the design and structural substantiation of a new drop chute for the NOAA Twin Otter aircraft
Customer:
National Oceanic and Atmospheric Administration (NOAA)
Services Performed:
PEI provided design, analysis, DER approval, and installation support for development of the drop chute modification for the Twin Otter (DHC-6)
Structural Analysis and FAA DER Approval:
- Generate system level finite element models, baseline and modified
- Calculation of drop chute drag loads
- Quasi-Static analysis for aerodynamic and limit maneuver loads
- Global Equivalency and Detailed Stress analysis, including mechanical joints (bolted and riveted)
- FAA DER review and approval
- Generation of FAA Form 8110-3 for approval of modifications
Engineering Design:
- Conducted site survey to measure and document Twin Otter (DHC-6) aircraft
- Modeled local aircraft structure in the aft baggage compartment area
- Designed preliminary reinforcements for drop chute cutout and installation
- Designed preliminary drop chute components
- After structural evaluation, completed detail design of drop chute and reinforcing structures
- Conducted Design Reviews with NOAA engineers
- Generated all detail part, assembly, and installation drawings
Deploying atmospheric dropsonde from Twin Otter drop chute:
