WYLE LABORATORIES

SCIENTIFIC SERVICES AND SYSTEMS GROUP

(NASA-CE-17d810) A DAT A EAS L AND ANALYSIS

PROGRAM FOR SHUTTLE MAIN ENGINE DYNAMIC

PRESSURE MEASUREMENTS. APP£NCIX C: DATA

BASE PLOTS FOE £5«E TESTS 902-214 THROUGH

902-314 Final Peport (Wyle Lats.,

N86-23636

Unclas

G3/20 06054
WYLE LABORATORIES - RESEARCH STAFF

TECHNICAL REPORT 66338-01

A DATA BASE AND ANALYSIS PROGRAM

FOR SHUTTLE MAIN ENGINE

DYNAMIC PRESSURE MEASUREMENTS

APPENDIX C

DATA BASE PLOTS FOR SSME TESTS

902-214 through 902-314

by.

Thomas Coffin

A final report of

work performed under contract NAS8-34343

for

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

GEORGE C. MARSHALL SPACE FLIGHT CENTER

MARSHALL SPACE FLIGHT CENTER, ALABAMA 35812

January 1986
FOREWORD

This report describes a dynamic pressure data base and data

base management system developed to characterize the Space

Shuttle Main Engine (SSME) dynamic pressure environment.

The data base represents dynamic pressure measurements

obtained during single engine hot firing tests of the SSME.

Software is provided to permit statistical evaluation of

selected measurements under specified operating conditions.

An interpolation scheme is also included to estimate

spectral trends with SSME power level. This report was

prepared by Wyle Laboratories Scientific Services and

Systems Group for the National Aeronautics and Space

Administration, George C. Marshall Space Flight Center. The

work was performed under NASA contract NAS 8-34343, entitled

"Flow Dynamic Environments in High Performance Rocket

Engines."

The author wishes to acknowledge the contribution to this

study by Dr. G. Meares, Chief Architect of the data base

management software described herein. Messrs. B. Dobbs and

D. Duck contributed long hours over a digitizer pad to

•» accomplish data base input. The singular value

decomposition software for spectrum interpolation was

developed by Dr. J. Jong. Mr. T. Nesman, MSFC technical

contract monitor, provided continuing support through

informal project reviews and served as a focal point for

definition of SSME data requirements.
DATA PLOT LISTING FOR TEST STAND A2

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Channel Descriptor

(Time History or PSD)

MMC FUEL INJ PR

Maximum

Frequency

(Hz)

40,000

Time

Slice

(Sec)

25

50

70

150

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30

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