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Analytical Methods for Aircraft Seat Design and Evaluation

Aerospace Standard
ARP5765
Issued

Published October 03, 2012 by SAE International in United States

Sector:

Aerospace

Issuing Committee:

Aircraft SEAT Committee

Language: English

Scope

This SAE Aerospace Recommended Practice (ARP) defines a means of assessing the credibility of computer models of aircraft seating systems used to simulate dynamic impact conditions set forth in Federal Regulations 14 CFR Part 23.562, 25.562, 27.562, and 29.562. The ARP is applicable to lumped mass and detailed finite element seat models. This includes specifications and performance criteria for aviation specific virtual anthropomorphic test devices (v-ATDs). A methodology to evaluate the degree of correlation between a seat model and dynamic impact tests is recommended. This ARP also provides testing and modeling best practices specific to support the implementation of analytical models of aircraft seat systems. Supporting information within this document includes procedures for the quantitative comparison of test and simulation results, as well as test reports for data generated to support the development of v-ATDs and a sample report. For this revision, Section 4, Seat System Validation is held in reserve.

Rationale

Analytical modeling tools have been developed to facilitate design and dynamic evaluation of aircraft seating systems. A principal goal of these modeling efforts is to use the model to accurately predict the results of a physical test. An accurate model could potentially be used to evaluate the seating system in lieu of physical test, saving both development time and cost. A means of establishing confidence in this predictive ability is needed. Towards that end, this document has been developed to define specifications for numerical ATD (Anthropometric Test Device) models suitable for aviation impact test simulations, provide procedures for validation of both lumped mass and detailed finite element seat models, and convey the current best practices to assist engineering analysts in developing efficient, accurate models.

Data Sets - Support Documents

Title	Description	Download
TABLE 1	SEAT DIMENSIONS
TABLE 2	ATD ANTHROPOMETRY LANDMARKS
TABLE 3	DYNAMIC CALIBRATION DATA SET - FORWARD FACING ATD
TABLE 4	MAXIMUM ALLOWABLE PEAK ERROR FOR FORWARD FACING V-ATD
TABLE 5	MAXIMUM ALLOWABLE CURVE SHAPE ERROR FOR FORWARD FACING V-ATD
TABLE 6	SETS OF CONSISTENT UNITS USED IN ANALYTICAL MODELS
TABLE 7	EXAMPLES OF CONSISTENT UNITS USED IN ANALYTICAL MODELS
TABLE 8	ELEMENT QUALITY CRITERIA
TABLE 9	“IDEAL” PULSE + CALCULATED VELOCITY
TABLE 10	NEW PULSE RECOMMENDATIONS
TABLE B1	PELVIC SHAPE EVALUATION
Unnamed Dataset 12
TABLE B2	FOAM PROPERTIES
TABLE B3	SEAT BELT CHARACTERISTICS
TABLE B4	SLED TESTS INCLUDED IN THE NIAR CALIBRATION DATA SET FOR HYBRID II ATD
TABLE B5	NIAR CALIBRATION DATA SET FOR HYBRID II ATD - TIME DURATION
TABLE C1	PELVIC SHAPE EVALUATION
Unnamed Dataset 18
TABLE C2	FOAM PROPERTIES
TABLE C3	SEAT BELT CHARACTERISTICS
TABLE C4	SLED TESTS INCLUDED IN THE NIAR CALIBRATION DATA SET FOR FAA HYBRID III ATD
TABLE C5	NIAR CALIBRATION DATA SET FOR HYBRID III ATD - TIME DURATION
TABLE D1	EXTERNAL DIMENSIONS
TABLE D2	SEGMENT AND TOTAL WEIGHT
TABLE D3	SEGMENTS CENTER OF GRAVITY
TABLE D4	HEAD DROP
TABLE D5	NECK PENDULUM IMPACT
TABLE D6	LOW SPEED CHEST IMPACT
TABLE D7	HIGH SPEED CHEST IMPACT
TABLE D8	LUMBAR FLEXION
TABLE D9	ABDOMEN COMPRESSION
TABLE D10	LEFT KNEE
TABLE D11	RIGHT KNEE
TABLE D12	PELVIS COMPRESSION
TABLE D13	PELVIC SHAPE EVALUATION
TABLE D14	CUSHION PROPERTIES
TABLE D15	MAXIMUM PEAK ERROR FOR FORWARD FACING V-ATD
TABLE D16	MAXIMUM CURVE SHAPE ERROR FOR FORWARD FACING V-ATD

Reference

Number	Title
14CFRPART23	This document is not part of the subscrption.
14CFRPART25	This document is not part of the subscrption.
14CFRPART27	This document is not part of the subscrption.
14CFRPART28	This document is not part of the subscrption.
AS8049	Performance Standard for Seats in Civil Rotorcraft, Transport Aircraft, and General Aviation Aircraft
J211-2	This document is not part of the subscrption.
J211/1_201403	Instrumentation for Impact Test - Part 1 - Electronic Instrumentation
J211/2_201406	Instrumentation for Impact Test—Part 2: Photographic Instrumentation

Technical Paper	Dynamic Modeling and Correlation to Impact Testing of Welded Ribbed Plaques
Technical Paper	Performance Evaluation of Safety Belt Anchorages: A Correlation Study between Laboratory Experiments and FE Models
Technical Paper	Utilizing Vehicle Seat Adjustment Motor to Detect, Weigh and Classify the Seat Occupants

2021-03-30	\|	ARP5765B
2015-12-04	\|	ARP5765A
2012-10-03	\|	ARP5765

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Analytical Methods for Aircraft Seat Design and Evaluation

Scope

Rationale

Recommended Content

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Data Sets - Support Documents

Issuing Committee

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