Apollo 10

322 Pages·2002·11.9 MB·English

STICENTER-GS 53-45/100
NASA JOHNSON SPACE CEN'TER
HOUSTON, TX 77058-3696
NASA
Connectionto Aerospace
AService of:
NationalAeronautiCSand
SpaceAdrrdnistration
U
SCII_IqTIFIC
TgCNNICAb IN FORI¢IATION
GEORGEC.MARSHALL SPACE FLIGHTCENTER
MPR-SAT-FE6-9-7
SATURNV LAUNCHVEHICLE _
FLIGHTI'VALUATIONREPORT-AS-50_ ,,i
,APOLLO 10 MI SSION
PREPAREDBY
SATURNFLIGHTEVALUATIONWORKINGGROUP
C_&0 r_ Z I c_mI imm
MPR-SAT-FE-69-7
SATURN V LAUNCH VEHICLE FLIGHT EVALUATION REPORT - AS-505
APOLLO I0 MISSION
BY
Saturn Flight Evaluation Working Group
George C. Marshall Space Flight Center
ABSTRACT
Saturn V AS-505 (Apollo lO Mission) was launched at 12:49:00 Eastern
Daylight Time on May 18, 1969, from Kennedy Space Center, Complex 39,
Pad B. The vehicle lifted off on schedule on a launch azimuth of 90
degrees east of north and rolled to a fli.ght azimuth of 72.028 degrees
east of north.
The launch vehicle successfully placed the manned spacecraft in the
planned translunar injection coast mode. The S-IVB/IU was placed in a
solar orbit with a period of 344.9 days by a combination of continuous
LH2 vent, the contingency experiment of propellant lead, a LOX dump and
APS ullage burn.
The Major Flight Objectiw_s and the Detailed Test Objectives of this
mission were completely accomplished. No failures, anomalies, or de-
viations occurred that seriously affected the flight or mission.
Any questions or comments pertaining to the information contained in
this report are invited arid should be directed to:
Director, George C. Marshall Space Flight Center
Huntsville_, Alabama 35812
Attention: Chairman, Saturn Flight Evaluation Working
Group, S&E-CSE-LF (Phone [phone])
TABLE OF CONTENTS
Section Page
TABLOEFCONTENTS iii
LISTOFILLUSTRATIONS xii
LISTOFTABLES xix
ACKNOWLEDGEMENT xxiii
ABBREVIATIONS xxiv
MISSIOPNLAN xxvii
FLIGHTTESTSUMMARY xxix
1 INTRODUCTION
l.l Purpose I-I
1.2 Scope I-I
2 EVENTTIMES
2,I Summaryof Events 2-I
2.2 Variable Time and CommandedSwitch
SelectorEvents 2-3
3 LAUNCHOPERATIONS
3.1 Summary 3-I
3.2 PrelaunchMilestones 3-I
3.3 CountdowEnvents 3-I
3.4 PropellanLtoading 3-I
3.4.1 RP-ILoading 3-I
3.4.2 LOXLoading 3-3
3.4.3 LH2 Loading 3-3
3.4.4 Auxiliary Propulsion System
PropellanLtoading 3-3
3.5 S-II Insulation,Purge and Leak
Detection 3-3
3.5.1 ForwardBulkheadInsulation 3-3
3.5.2 ForwardBulkheadUninsulatedArea 3-4
3.5.3 LH2 TankSidewall 3-4
iii
TABLE OF CONTENTS(CONTINUED)
Section Page
3.5.4 Bolting/J-Ring 3-4
3.5.5 FeedlineElbow 3-4
3,5.6 CommoBnulkhead 3-4
3,6 GroundSupport Equipment 3-5
3.6.1 Ground/Vehicle Interface 3-5
3.6.2 MSFC Furnished Ground Support
Equipment 3-5
3.6.3 GSECameraCoverage 3-6
4 TRAJECTORY
4.1 Summary 4-I
4.2 Tracking Data Utilization 4-I
4.2.1 Tracking During the Ascent Phase
of Flight 4-I
4.2.2 Tracking During Orbital Flight 4-2
4.2.3 Tracking During the Injection Phase
of Flight 4-2
4.3 Trajectory Evaluation 4-2
4.3.1 AscentTrajectory 4-2
4.3.2 Parking Orbit Trajectory 4-3
4.3.3 Injection Trajectory 4-5
4.3.4 Post TLI Trajectory 4-6
4.3.5 S-IVB/IU Post Separation Trajectory 4-10
5 S-IC PROPULSION
5.1 Summary 5-I
5.2 S-IC Ignition Transient Performance 5-I
5.3 S-IC Mainstage Performance 5-4
5.4 S-IC Engine Shutdown Transient
Performance 5-6
5,5 S-IC Stage Propellant Management 5-6
5.6 S-IC Pressurization Systems 5-6
5.6.1 S-IC Fuel Pressurization System 5-6
5.6.2 S-IC LOXPressurization System 5-7
5.7 S-IC Pneumatic Control Pressure System 5-8
5.8 S-IC PurgeSystems 5-9
5.9 POGOSuppression System 5-9
iv
TABLE OF CONTENTS(CONTINUED)
Section Page
6 S-II PROPULSION
6.1 Summary 6-I
6.2 S-II Chilldown and Buildup
Transient Performance 6-2
6.3 S-II Mainstage Performance 6-5
6.4 S-II Shutdown Transient Performance 6-7
6.5 S-II Stage Propellant Management 6-9
6.6 S-II Pressurization Systems 6-10
6.6.1 S-II Fuel Pressurization System 6-10
6.6.2 S-II LOXPressurization System 6-11
6.7 S-II Pneumatic Control Pressure
System 6-11
6.8 S-II Helium Injection System 6-12
7 S-IVB PROPULSION
7.1 Summary 7-I
7.2 S-IVB Chilldown and Buildup Transient
Performance for First Burn 7-2
7.3 S-IVB Mainstage Performance for First
Burn 7-2
7.4 S-IVB Shutdown Transient Performance
for First Burn 7_5
7.5 S-IVB Parking Orbit Coast Phase
Conditioning 7-6
7.6 S-IVB Chilldown and Restart for
SecondBurn 7-6
7.7 S-IVB Mainstage Performance for
SecondBurn 7-12
7.8 S-IVB Shutdown Transient Performance
for' SecondBurn 7-14
7.9 S-IVB Stage Propellant Management 7-14
7.10 S-IVB Pressurization System 7-14
7.10.1 S-lVB Fuel Pressurization System 7-14
7.10.2 S-IVB LOXPressurization System 7-18
TABLE OF CONTENTS(CONTINUED)
Section Page
7.11 S-IVB Pneumatic Control Pressure
System 7-22
7.12 S-IVB Auxiliary Propulsion System 7-26
7.13 S-IVB Propellant Lead Experiment and
Orbital Safing Operation 7-27
7.13,1 LOX and LH2 Lead Chilldown Experiment 7-28
7.13.2 LOX Tank Ambient Repressurization 7-31
7.13.3 LH2 Tank Ambient Repressurization 7-32
7.13.4 Fuel TankSafing 7-32
7.13.5 LOXTank Dumpand Safing 7-33
7.13.6 Cold Helium Dump 7-33
7.13.7 Ambient Helium Dump 7-34
7.13.8 Stage Pneumatic Control Sphere
Safing 7-35
7.13.9 Engine Start Sphere Safing 7-35
7.13.10 Engine Control Sphere Safing 7-35
8 HYDRAULICSYSTEMS
8.1 Summary 8-I
8,2 S-IC Hydraulic System 8-I
8.3 S-II Hydraulic System 8-I
8.4 S-IVB Hydraulic System (First Burn) 8-I
8.5 S-IVB Hydraulic System (Parking Orbit
CoastPhase) 8-2
8.6 S-IVB Hydraulic System (Second Burn) 8-3
8,7 S-IVB Hydraulic System (Translunar
Injection Coast and Propellant Dump) 8-3
9 STRUCTURES
9,1 Summary 9-I
9.2 Total Vehicle Structures Evaluation 9-I
9.2.1 Longitudinal Loads 9-I
9,2.2 BendingMoments 9-3
9.2.3 Vehicle Dynamic Characteristics 9-5
9.3 Vibration Evaluation 9-11
9.3.1 S-IC Stage and Engine Evaluation 9-11
9.3.2 S-II Stage and Engine Evaluation 9-12
9.3.3 S-IVB Stage and Engine Evaluation 9-23
vi
TABLE OF CONTENTS(CONTINUED)
Section Page
I0 GUIDANCEANDNAVIGATION
ID.1 Sumrmya 1O1-
I
I0.I.I Flight Program I0-I
10.1.2 Instrument Unit Components I0-I
10.2 GuidanceComparisons I0-I
10.3 Navigation and Guidance Scheme
Evaluation 10-7
10.4 Guidance System Component Evaluation 10-8
10.4.1 LVDCPerformance 10-8
10.4.2 LVDAPerformance 10-8
10.4.3 LadderOutputs 10-8
10.4.4 Telemetry Outputs I0-11
10.4.5 Discrete Outputs I0-II
10.4.6 Switch Selector Functions I0-II
10.4.7 ST-124M-3 Inertial Platform
Performance 10-I1
11 CONTROLSYSTEM
11.1 Summary 11-I
II.2 Control System Description II-I
11.3 S-IC Control System Evaluation 11-2
11.3.1 Liftoff Clearances 11-2
11.3.2 S-IC Flight Dynamics II-2
II.4 S-II Control System Evaluation II-7
II.5 S-IVB Control System Evaluation 11-14
11.5.1 Control System Evaluation During
FirstBurn 11-14
II.5.2 Control System Evaluation During
ParkingOrbit ll-14
'II.5.3 Control System Evaluation During
SecondBurn ll-17
11.5.4 Control System Evaluation After
S-IVBSecondBurn ll-18
12 SEPARATION
12.1 Summary 12-I
12.2.1 S-IC RetroMotor Performance 12-1
12.2.2 S-IllUllage Motor Performance 12-I
_\ 1122..22.3 SS--IICC//SS--IIII SSetpaagreatSieopnarEavtailounation 1122--I1
_\, vii
o_
TABLE OF CONTENTS(CONTINUED)
Sectoin Page
12.3 S-II Second Plane Separation
Evaluation 12-I
12.4 S-II/S-IVB Separation Evaluation 12-2
12.4.1 S-II Retro Motor Performance 12-2
12.4,2 S-IVB Ullage Motor Performance 12-2
12.4.3 S-II/S-IVB Separation Dynamics 12-2
12.5 S-I VB/IU/LM/CSM Separation
Evaluation 12-2
12.6 Lunar Module Docking and Ejection
Evaluation 12-2
13 ELECTRICALNETWORKS
13.1 Summary 13-I
13.2 S-IC Stage Electrical System 13-I
13.3 S-II Stage Electrical System 13-2
13.4 S-IVB Stage Electrical System 13-3
13,5 Instrument Unit Electrical System 13-6
14 RANGESAFETY AND COMMANDSYSTEMS
14.1 Summary 14-I
14.2 Secure Range Safety CommandSystems 14-I
14.3 Commandand Communications System 14-I
15 EMERGENCYDETECTIONSYSTEM
15.1 Summary 15-I
15.2 SystemEvaluation 15-I
15.2.1 General Performance 15-I
15.2.2 Propulsion System Sensors 15-I
15,2.3 Flight Dynamics and Control Sensors 15-I
15.2.4 EDSEventTimes 15-2
16 VEHICLE PRESSUREANDACOUSTIC ENVIRONMENT
16.1 Summary 16-I
16.2 Surface Pressures and Compartment
Venting 16-I
16.2.1 S-ICStage 16-I
16.2.2 S-II Stage 16-5
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