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Casualty Areas from Impacting Inert Debris for People in the Open

By Montgomery, Robert M.

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Book Id: WPLBN0000694551
Format Type: PDF eBook
File Size: 2.92 MB
Reproduction Date: 2005

Title: Casualty Areas from Impacting Inert Debris for People in the Open  
Author: Montgomery, Robert M.
Volume:
Language: English
Subject: Aviation, Federal Aviation Administration Command Center (U.S.), Mechanical engineering.
Collections: Space and Aviation eDocuments Collection
Historic
Publication Date:
Publisher: Federal Aviation Administration (FAA)

Citation

APA MLA Chicago

Montgomery, R. M. (n.d.). Casualty Areas from Impacting Inert Debris for People in the Open. Retrieved from http://community.worldlibrary.org/


Excerpt
Excerpt: After discussing what constitutes a hazardous piece and presenting the equation for computing casualty expectancy, detailed methods are provided for evaluating the basic casualty area for an impacting piece. This area depends on the cross-sectional area of the piece, the assumed dimensions of a person in the open, and the path angle of the velocity vector at impact. Other augmenting effects that can cause the casualty area of an impacting piece to be considerably larger than the basic casualty area of the piece itself are also discussed. These are: slide or skid, bounce or ricochet, splattering and cratering. A procedure for arriving at a composite casualty area to substitute in the casualty-expectancy equation is provided. Casualty areas for inert debris produced by breakup of the Atlas llAS and Delta-GEM vehicles are given in appendices.

Table of Contents
Table of Contents 2. Casualty Expectancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.1 The Casualty Expectancy Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.2 Identification of Hazardous Pieces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 . Casualty-Area Computations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 . Dimensions of a Person . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5. Wind and Path Angle Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6.SlideorSkid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6.1SlideEquations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6.2 Slide Coefficients and Distances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6.3 Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.4 Casualty Area for Slide or Skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7. Bounce or Ricochet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.1BounceEquations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.2 Horizontal Bounce Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.3 Height of Bounce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.4 Estimates of Low-Velocity Coefficients of Restitution . . . . . . . . . . . . . . 15 7.5 Assumed Coefficient of Restitution and Bounce Results . . . . . . . . . . . . 17 7.6 Casualty Area for Low Bounce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.7 Casualty Area for High Bounce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.7.1 High and Long Bounce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.7.2 High and Short Bounce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7.8 Multiple Bounces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.9 Unequal Impact and Rebound Angles . . . . . . . . . . . . . . . . . . . . . . . . . . 25 7.9.1 Density Function for Rebound Angle . . . . . . . . . . . . . . . . . . . . 25 7.9.2 Computation of Casualty Area for Variable Rebound Angle ... 28 7.9.3 Casualty-Area Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 8. Splattering and Cratering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 8.1 Basic Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 0 8.2 Splatter-Range Density Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 8.3 Casualty Area for Fixed Splatter Range With No Overflight . . . . . . . . . 32 8.4 Casualty Area for All Range Intervals With No Overflight . . . . . . . . . . 33 8.5 Elimination of No-Overflight Restriction . . . . . . . . . . . . . . . . . . . . . . . . 34 8.6 Maximum Splatter Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 8.7 Number and Weight of Splatter Fragments . . . . . . . . . . . . . . . . . . . . . . 44 8.8 Frangibility Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 0 8.9 Size of Splatter Fragment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 8.10 Attempt to Obtain Experimental Data . . . . . . . . . . . . . . . . . . . . . . . . . 52

 

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