Effects of Aircraft Size on Cabin Floor Dynamic Pulses Federal Aviation Administration, Technical Center

Format:

Conference/Event

Author/Creator:

Caiafa, Caesar A., author.

Conference Name:

Aerospace Technology Conference & Exposition (1988-10-03 : Anaheim, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

Recent Federal Aviation Administration (FAA) regulatory actions (both a rule and proposed rules) have introduced dynamic test requirements for seats in the form of acceleration versus time triangular pulses. This paper summarizes a recent FAA sponsored effort to update size scaling trends for airplane cabin floor crash pulses.The dynamic pulses for different category airplanes are summarized and compared. An investigation into the effect that airplane size has on dynamic floor pulses generated within the airplane cabin during a crash impact event is discussed, including:A simple approximate expression relating aircraft fuselage crush energy dissipation and kinetic energy was utilized to generate a set of triangular pulse velocity - crush distance - peak acceleration curves. Estimated effective crush distances for various classes of airplane sizes or categories and measured acceleration, velocity and crush data were plotted. Blots for vertical-direction and longitudinal-direction are presented. A preliminary size trend curve range is established for each of the two directional pulses. The vertical pulse trend curves are based on enveloping all the applicable measured and analytically developed data. The longitudinal trend curves assume that the survivable envelope ranges from the fringes of known survivable conditions to nonsurvivable crash test results.The size effect study emphasizes that the results are more configuration sensitive and not directly related to mass. Large airplanes with limited effective crush regions could behave more like some smaller airplanes with regards to the character of the cabin floor pulses

Notes:

Vendor supplied data

Publisher Number:

881379

Access Restriction:

Restricted for use by site license