STS-125Hubble Space Telescope(HST) Servicing Mission 4 (SM4) Overview

Presented By: Jerry L. RossOctober 6, 2009Prague, Czech Republic

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Wide Field Planetary Camera 2COSTARGyrosSolar Arrays

Launch!

Imaging SpectrographNear Infrared CameraFine Guidance Sensor

GyrosAdvanced ComputerFine Guidance Sensor

Advanced CameraSolar ArraysPower Control UnitNICMOS Cooling System

GyrosWide Field Camera 3Cosmic Origins SpectrographBatteriesFine Guidance SensorSTIS RepairACS RepairNew Outer Blanket LayerSoft Capture Mechanism

SM1

SM2

SM3A

SM3B

SM4 De-OrbitMission

HUBBLE MISSIONSHUBBLE

MISSIONS

1990 1993 1997 1999 2002 2009 NET 2020 2070108_PMB_SM4_Overview_PAO.ppt

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HST SM4 Flight CrewScott

AltmanGreg

JohnsonMegan

McArthur

John Grunsfeld

DrewFeustel

Mike Good

MikeMassimino

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STS-400 is being prepared as the rescue mission for STS-125. It will be processed in parallel with STS-125 and will be available

for launch if needed

HST Launch on Need (LON) Rescue Mission STS-400

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Flight Support System

Super Lightweight Interchangeable

Carrier

Orbital Replacement Unit Carrier

Multi-use Logistic

Equipment Carrier

HST Servicing Mission 4 (SM4) Configuration

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SI C&DH (Bay 10)

SI C&DH

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WFC3 will be the first Hubble wide-field camera spanning Ultraviolet – Visible - Infrared

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Battery Bays (2 & 3)Bays 2 and 3

Bays 2 Bays 3

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Battery Details

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Rate Sensor Unit (RSU) HST Rate Gyro Assembly (RGA)

Rate Sensor Unit and Electronic Control Unit

COS will be the most sensitive UV spectrograph ever to fly on Hubble

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ACS Worksite

CCD ElectronicsBox (CEB)Radiators

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ACS Worksite/Tools

View from bottom of ACS looking upCover Plate(32 Non-Captive Fasteners)

Grid – To Be Cut

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Grid Cutter

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Fastener Capture Plate

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Card Removal from ACS

Card Extraction Tool

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CEB Replacement Module

Power Supply Module

Power Connectors

ACS Repair

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L-Handle

EVA Handle

MEB Cover

LVPS-2 Card

(Internal)

STIS

Cover Clamp

Fastener Capture Plate

The Fastener Capture Plate is attached to the STIS MEB cover and is used to capture the 111 screws that EVA astronauts will remove in order to gain access to the failed LVPS-2 power supply card

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Low Voltage Power Supply (LVPS) Card

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STIS Card Removal

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FGS R&R

Access to HST

Access to FSIPE

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Soft Capture Mechanism

SCM attached to HST

EM Soft Capture Mechanism (SCM) Fitcheck with Lightweight Berthing

and Positioning System (BAPS) ring

The Soft Capture Mechanism will be attached to the aft bulkhead of Hubble during SM4. It greatly increases the likelihood of a successful autonomous rendezvous and capture. It is a risk reduction opportunity for a future de-orbit mission

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