Accession Number:

AD0880680

Title:

Analysis of Helicopter Structural Crashworthiness. Volume 1. Mathematical Simulation and Experimental Verification for Helicopter Crashworthiness

Descriptive Note:

Final rept.

Corporate Author:

DYNAMIC SCIENCE INC PHOENIX AZ AVSER FACILITY

Personal Author(s):

• Gatlin, Clifford I.
• Goebel, Donald E.
• Larsen, Stuart E.

Report Date:

1971-01-01

Pagination or Media Count:

162.0

Abstract:

The report describes the development of a mathematical model that will simulate the response of a UH-IDH helicopter airframe to vertical crash loading and the full-scale crash test performed to verify the validity of the model. The results of this program indicate that The structural weakness contributing to most impact injuries in UH-1DH helicopter accidents are lack of resistance to failure in lateral roll-over and lack of energy-absorbing capability to reduce vertical accelerations Thematical model is capable of accurately predicting the floor and engine accelerations and deflections In its present form, the model does not accurately predict the transmission accelerations and deflections.

Descriptors:

• *HELICOPTERS
• *AVIATION SAFETY
• *AIRFRAMES
• FAILURE(MECHANICS)
• AVIATION ACCIDENTS
• STRUCTURAL PROPERTIES
• IMPACT
• MATHEMATICAL MODELS

Subject Categories:

• Helicopters

Distribution Statement:

APPROVED FOR PUBLIC RELEASE