Pyroshock contents · MIL-STD-810H

3 tables appear under this heading.

1. PDF page 630

Paragraph		Page
1.	SCOPE	1
1.1	PURPOSE	1
1.2	APPLICATION	1
1.2.1	PYROSHOCK	1
1.2.2	PYROSHOCK - MOMENTUM EXCHANGE	2
1.2.3	PYROSHOCK - PHYSICAL PHENOMENON	2
1.2.4	CLASSIFICATION OF PYROSHOCK ZONES	2
1.3	LIMITATIONS	3
2.	TAILORING GUIDANCE	3
2.1	SELECTING THE PYROSHOCK METHOD	3
2.1.1	EFFECTS OF PYROSHOCK	3
2.1.2	SEQUENCE AMONG OTHER METHODS	4
2.2	SELECTING A PROCEDURE	4
2.2.1	PROCEDURE SELECTION CONSIDERATIONS	4
2.2.2	DIFFERENCE AMONG PROCEDURES	5
2.3	DETERMINE TEST LEVELS AND CONDITIONS	5
2.3.1	GENERAL CONSIDERATIONS - TERMINOLOGY	5
2.3.2	SINGLE PYROSHOCK EVENT MEASUREMENT SYSTEM CHARACTERIZATION AND BASIC PROCESSING	11
2.3.3	TEST CONDITIONS - SHOCK SPECTRUM TRANSIENT DURATION AND SCALING	14
2.3.3.1	PYROSHOCK SOURCE ENERGY SCALING (SES)	14
2.3.3.2	PYROSHOCK RESPONSE LOCATION DISTANCE SCALING (RLDS)	14
2.3.3.3	MEASURED DATA AVAILABLE FROM PYROSHOCK	15
2.3.3.4	MEASURED DATA NOT AVAILABLE FROM PYROSHOCK	16
2.3.4	TEST AXES, DURATION, AND NUMBER OF SHOCK EVENTS	18
2.3.4.1	GENERAL	18
2.3.4.2	PROCEDURE I - NEAR-FIELD WITH AN ACTUAL CONFIGURATION	18
2.3.4.3	PROCEDURE II - NEAR-FIELD WITH A SIMULATED CONFIGURATION	18
2.3.4.4	PROCEDURE III-MID-FIELD WITH A MECHANICAL TEST DEVICE	19
2.3.4.5	PROCEDURE IV - FAR-FIELD WITH A MECHANICAL TEST DEVICE	19
2.3.4.6	PROCEDURE V - FAR-FIELD WITH AN ELECTRODYNAMIC SHAKER	19
2.4	TEST ITEM CONFIGURATION	19
3.	INFORMATION REQUIRED	19
3.1	PRETEST	19
3.2	DURING TEST	20
3.3	POST-TEST	20
4.	TEST PROCESS	20
4.1	TEST FACILITY	20
4.2	CONTROLS	21
4.2.1	CALIBRATION	21
4.2.2	TOLERANCES	21

Paragraph		Page
4.2.2.1	PROCEDURE I - NEAR-FIELD WITH AN ACTUAL CONFIGURATION AND PROCEDURE II - NEAR-FIELD WITH A SIMULATED CONFIGURATION	21
4.2.2.2	PROCEDURE III-MID-FIELD WITH A MECHANICAL TEST DEVICE	21
4.2.2.3	PROCEDURE IV - FAR-FIELD WITH A MECHANICAL TEST DEVICE	22
4.2.2.4	PROCEDURE V - FAR-FIELD WITH AN ELECTRODYNAMIC SHAKER	22
4.2.3	INSTRUMENTATION	22
4.2.4	DATA ANALYSIS	24
4.3	TEST INTERRUPTION	24
4.3.1	INTERRUPTION DUE TO LABORATORY EQUIPMENT MALFUNCTION	24
4.3.2	INTERRUPTION DUE TO TEST ITEM OPERATION FAILURE	24
4.4	TEST EXECUTION	25
4.4.1	PREPARATION FOR TEST	25
4.4.1.1	PRELIMINARY STEPS	25
4.4.1.2	PRETEST CHECKOUT	25
4.4.2	TEST PROCEDURES	25
4.4.2.1	PROCEDURE I - NEAR-FIELD WITH ACTUAL CONFIGURATION	26
4.4.2.2	PROCEDURE II - NEAR-FIELD WITH SIMULATED CONFIGURATION	26
4.4.2.3	PROCEDURE III- MID-FIELD USING MECHANICAL TEST DEVICE	26
4.4.2.4	PROCEDURE IV - FAR-FIELD USING MECHANICAL TEST DEVICE	27
4.4.2.5	PROCEDURE V-FAR-FIELD USING ELECTRODYNAMIC SHAKER	28
5.	ANALYSIS OF RESULTS	28
5.1	PROCEDURE I - NEAR-FIELD WITH AN ACTUAL CONFIGURATION	28
5.2	PROCEDURE II - NEAR-FIELD WITH SIMULATED CONFIGURATION	28
5.3	PROCEDURE III - MID-FIELD USING MECHANICAL TEST DEVICE	28
5.4	PROCEDURE IV - FAR-FIELD USING MECHANICAL TEST DEVICE	29
5.5	PROCEDURE V - FAR-FIELD USING ELECTRODYNAMIC SHAKER	29
6.	REFERENCE/RELATED DOCUMENTS	29
6.1	REFERENCED DOCUMENTS	29
6.2	RELATED DOCUMENTS	30

FIGURE 517.3-1	FULL DURATION NEAR-FIELD, LASER PYROSHOCK TIME HISTORY (MEAN REMOVED, FILTERED AT 200 KHz).	6
FIGURE 517.3-2	FULL DURATION NEAR-FIELD, LASER PYROSHOCK VELOCITY TIME HISTORY	7
FIGURE 517.3-3	FULL DURATION NEAR-FIELD, ACCELEROMETER PYROSHOCK TIME HISTORY	8
FIGURE 517.3-4	FULL DURATION NEAR-FIELD, ACCELEROMETER PYROSHOCK VELOCITY TIME HISTORY	8
FIGURE 517.3-5	ACCELERATION MAXIMAX SRS FOR THE PYROSHOCK, PRE-PYROSHOCK, AND POST PYROSHOCK (LASER).	9
FIGURE 517.3-6	MAXIMAX PSEUDO-VELOCITY RESPONSE SPECTRUM FOR THE PYROSHOCK (LASER)	10
FIGURE 517.3-7	FILTER ATTENUATION (CONCEPTUAL, NOT FILTER SPECIFIC)	12
FIGURE 517.3-8	ILLUSTRATION OF SAMPLING RATES AND OUT OF BAND "FOLD OVER” FREQUENCIES FOR DATA ACQUISITION SYSTEMS.	13
FIGURE 517.3-9	EMPIRICAL SCALING RELATIONSHIP FOR SHOCK RESPONSE SPECTRUM AS A FUNCTION OF THE DISTANCE FROM THE PYROTECHNIC SOURCE	15
FIGURE 517.3-10	SHOCK RESPONSE SPECTRA FOR VARIOUS POINT SOURCE PYROTECHNIC DEVICES	17
FIGURE 517.3-11	SHOCK RESPONSE SPECTRUM VERSUS DISTANCE FROM PYROTECHNIC SOURCE	17
FIGURE 517.3-12	PEAK PYROSHOCK RESPONSE VERSUS DISTANCE FROM PYROTECHNIC SOURCE	18

1. PDF page 630

Paragraph		Page
1.	SCOPE	1
1.1	PURPOSE	1
1.2	APPLICATION	1
1.2.1	PYROSHOCK	1
1.2.2	PYROSHOCK - MOMENTUM EXCHANGE	2
1.2.3	PYROSHOCK - PHYSICAL PHENOMENON	2
1.2.4	CLASSIFICATION OF PYROSHOCK ZONES	2
1.3	LIMITATIONS	3
2.	TAILORING GUIDANCE	3
2.1	SELECTING THE PYROSHOCK METHOD	3
2.1.1	EFFECTS OF PYROSHOCK	3
2.1.2	SEQUENCE AMONG OTHER METHODS	4
2.2	SELECTING A PROCEDURE	4
2.2.1	PROCEDURE SELECTION CONSIDERATIONS	4
2.2.2	DIFFERENCE AMONG PROCEDURES	5
2.3	DETERMINE TEST LEVELS AND CONDITIONS	5
2.3.1	GENERAL CONSIDERATIONS - TERMINOLOGY	5
2.3.2	SINGLE PYROSHOCK EVENT MEASUREMENT SYSTEM CHARACTERIZATION AND BASIC PROCESSING	11
2.3.3	TEST CONDITIONS - SHOCK SPECTRUM TRANSIENT DURATION AND SCALING	14
2.3.3.1	PYROSHOCK SOURCE ENERGY SCALING (SES)	14
2.3.3.2	PYROSHOCK RESPONSE LOCATION DISTANCE SCALING (RLDS)	14
2.3.3.3	MEASURED DATA AVAILABLE FROM PYROSHOCK	15
2.3.3.4	MEASURED DATA NOT AVAILABLE FROM PYROSHOCK	16
2.3.4	TEST AXES, DURATION, AND NUMBER OF SHOCK EVENTS	18
2.3.4.1	GENERAL	18
2.3.4.2	PROCEDURE I - NEAR-FIELD WITH AN ACTUAL CONFIGURATION	18
2.3.4.3	PROCEDURE II - NEAR-FIELD WITH A SIMULATED CONFIGURATION	18
2.3.4.4	PROCEDURE III-MID-FIELD WITH A MECHANICAL TEST DEVICE	19
2.3.4.5	PROCEDURE IV - FAR-FIELD WITH A MECHANICAL TEST DEVICE	19
2.3.4.6	PROCEDURE V - FAR-FIELD WITH AN ELECTRODYNAMIC SHAKER	19
2.4	TEST ITEM CONFIGURATION	19
3.	INFORMATION REQUIRED	19
3.1	PRETEST	19
3.2	DURING TEST	20
3.3	POST-TEST	20
4.	TEST PROCESS	20
4.1	TEST FACILITY	20
4.2	CONTROLS	21
4.2.1	CALIBRATION	21
4.2.2	TOLERANCES	21

2. PDF page 631

Paragraph		Page
4.2.2.1	PROCEDURE I - NEAR-FIELD WITH AN ACTUAL CONFIGURATION AND PROCEDURE II - NEAR-FIELD WITH A SIMULATED CONFIGURATION	21
4.2.2.2	PROCEDURE III-MID-FIELD WITH A MECHANICAL TEST DEVICE	21
4.2.2.3	PROCEDURE IV - FAR-FIELD WITH A MECHANICAL TEST DEVICE	22
4.2.2.4	PROCEDURE V - FAR-FIELD WITH AN ELECTRODYNAMIC SHAKER	22
4.2.3	INSTRUMENTATION	22
4.2.4	DATA ANALYSIS	24
4.3	TEST INTERRUPTION	24
4.3.1	INTERRUPTION DUE TO LABORATORY EQUIPMENT MALFUNCTION	24
4.3.2	INTERRUPTION DUE TO TEST ITEM OPERATION FAILURE	24
4.4	TEST EXECUTION	25
4.4.1	PREPARATION FOR TEST	25
4.4.1.1	PRELIMINARY STEPS	25
4.4.1.2	PRETEST CHECKOUT	25
4.4.2	TEST PROCEDURES	25
4.4.2.1	PROCEDURE I - NEAR-FIELD WITH ACTUAL CONFIGURATION	26
4.4.2.2	PROCEDURE II - NEAR-FIELD WITH SIMULATED CONFIGURATION	26
4.4.2.3	PROCEDURE III- MID-FIELD USING MECHANICAL TEST DEVICE	26
4.4.2.4	PROCEDURE IV - FAR-FIELD USING MECHANICAL TEST DEVICE	27
4.4.2.5	PROCEDURE V-FAR-FIELD USING ELECTRODYNAMIC SHAKER	28
5.	ANALYSIS OF RESULTS	28
5.1	PROCEDURE I - NEAR-FIELD WITH AN ACTUAL CONFIGURATION	28
5.2	PROCEDURE II - NEAR-FIELD WITH SIMULATED CONFIGURATION	28
5.3	PROCEDURE III - MID-FIELD USING MECHANICAL TEST DEVICE	28
5.4	PROCEDURE IV - FAR-FIELD USING MECHANICAL TEST DEVICE	29
5.5	PROCEDURE V - FAR-FIELD USING ELECTRODYNAMIC SHAKER	29
6.	REFERENCE/RELATED DOCUMENTS	29
6.1	REFERENCED DOCUMENTS	29
6.2	RELATED DOCUMENTS	30

3. PDF page 631

FIGURE 517.3-1	FULL DURATION NEAR-FIELD, LASER PYROSHOCK TIME HISTORY (MEAN REMOVED, FILTERED AT 200 KHz).	6
FIGURE 517.3-2	FULL DURATION NEAR-FIELD, LASER PYROSHOCK VELOCITY TIME HISTORY	7
FIGURE 517.3-3	FULL DURATION NEAR-FIELD, ACCELEROMETER PYROSHOCK TIME HISTORY	8
FIGURE 517.3-4	FULL DURATION NEAR-FIELD, ACCELEROMETER PYROSHOCK VELOCITY TIME HISTORY	8
FIGURE 517.3-5	ACCELERATION MAXIMAX SRS FOR THE PYROSHOCK, PRE-PYROSHOCK, AND POST PYROSHOCK (LASER).	9
FIGURE 517.3-6	MAXIMAX PSEUDO-VELOCITY RESPONSE SPECTRUM FOR THE PYROSHOCK (LASER)	10
FIGURE 517.3-7	FILTER ATTENUATION (CONCEPTUAL, NOT FILTER SPECIFIC)	12
FIGURE 517.3-8	ILLUSTRATION OF SAMPLING RATES AND OUT OF BAND "FOLD OVER” FREQUENCIES FOR DATA ACQUISITION SYSTEMS.	13
FIGURE 517.3-9	EMPIRICAL SCALING RELATIONSHIP FOR SHOCK RESPONSE SPECTRUM AS A FUNCTION OF THE DISTANCE FROM THE PYROTECHNIC SOURCE	15
FIGURE 517.3-10	SHOCK RESPONSE SPECTRA FOR VARIOUS POINT SOURCE PYROTECHNIC DEVICES	17
FIGURE 517.3-11	SHOCK RESPONSE SPECTRUM VERSUS DISTANCE FROM PYROTECHNIC SOURCE	17
FIGURE 517.3-12	PEAK PYROSHOCK RESPONSE VERSUS DISTANCE FROM PYROTECHNIC SOURCE	18