Alpha Magnetic Spectrometer-02 ISS Digital Data Recording System (DDRS)

Alpha Magnetic Spectrometer

Alpha Magnetic Spectrometer-02

ISS Digital Data Recording System(DDRS)

ISS DDRS Project / ESCG Team


Agenda

• Background

• Objectives

• Description

• Interface Diagram

April 26, 2010 ESCG 2


April 26, 2010 ESCG 3

BACKGROUND

From:http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-91.html

• The Alpha Magnetic Spectrometer (AMS) flew for the first time on STS-91 and was powered up on Flight Day 1.

• Data originally planned to be sent to ground stations through Discovery's KU-band communications system was recorded onboard because of a problem with the KU-band system.

• Data that could not be recorded by ground stations was recorded onboard throughout the mission.

• Less than <5% of the AMS-1 data made it to the ground by S-Band.

• On the last STS mission, Shuttle Ku Band was out of commission.

http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-91.html


ESCG 4

OBJECTIVES

• Nominally: Provide a recording of the science data as close to the source as possible.– Contingency: Provide a means for the ISS crew to observe operational

data of AMS-02.– Contingency: Provide a means for the ISS crew to command the AMS-02

payload.

• ISS DDRS command path to AMS-02 is via High Rate Data Link. In the event ISS data systems or ground commanding are unavailable AMS-02 can be completely operated from this alternate interface.

April 26, 2010


ESCG 5

• ISS Digital Data Recording System description:– Based on a NASA provided T61p ISS laptop, dedicated for AMS use– Would provide primary on-board data recording (24/7)– Would provide play-back capability to downlink lost or corrupted data– Uses ISSLAN Joint Station Lan (JSL) connection– Crew hard-disk change-out minimized by over-writing data on the AMS disk

once it is verified on the ground - only used to prolong H/D life.

• Ensures data integrality if the event of ISS data systems and/or payload outages.

• Allows for contingency crew monitor of payload status and contingency crew commanding of payload systems via “Fn” keystrokes, based upon procedures, flight notes or A-to-G voice-loop.

• AMS02 ISS DDRS is a CB / STS-134 crew request.

AMS-02 ISS DDRSDescription

April 26, 2010


AMS-02 ISS DDRS Interfaces

ESCG 6April 26, 2010

AMS-02 ISS DDRS INTERFACESPart Names reflect OpNom

AMS LAPTOP SEG33120761-301

Enhanced A31p 16V DC Power Cable SEG33116459-301

DC Power 28V DC Cable Assembly

SEG39129264-305

J1 - 28VDC

AMS USB Cable SEG39137981-801

Nominal configuration: AMS HRDL Cable

SEG39136091-301(Length: 8 ft)

UIP

AMS Hard Drive Adapter

SEG33120741-301

16 VDC Power (P1)

J7 - HRDL

P7

P2P1

AMS Hard Drive

SEG39137974-801

AMS USB Cable SEG39137981-801

P2P1

AMS Transmitter Adapter

SEG39136090-301TxUSB

A31p 28V DC Power Supply

SEG33116428-301

P2

P1

RJ45 - Network

EXPRESS RACK 6

PS28 Junction Box

SEG33114658-301

P1 P2

J2 J1

P1 P2 P1

MDL 3

J2 – DATA

(Network)

MDL 3

USB

USB

P1

AMS Cable Kit SEG39137975-301

Alternate configurations; not part of AMS Cable Kit: AMS Short Extension Cable

SEG39138001-301(Length: 6 ft)

AMS Long Extension CableSEG39138001-302

(Length: 40 ft)

AMS Receiver Adapter

SEG39136090-302RxUSB

J4

Desk Top Plate Assembly SED33108703-304

Multi Use Bracket Assembly

SEG33107631-301

Location Assumption: MDL 3, Locker 8, Drawer 2, Seat track

RED = Assumptions or To Be DeterminedBlue = AMS-02 ISS DDRS Project deliverables

J5

P2

PS28 Cable Assembly

SEG33114659-301

28 VDC, 20 AMP Adaptor Cable Assy

SEG33112598-301

P1 P2

PS28 Power Strip Assembly

SEG33114657-301

AMS Network JackAssembly

SEG39137984-301

AMS Network CableSEG39138002-801

(Length: 9 ft) Alternate length: 40 ft; SEG39138002-802)


BACKUP SLIDES




ISS DDRSInstallation Concept



ISS DDRSInstallation Concept

SEG39138002-3019 ft

SEG33112598-301

SEG33114659-301

SEG33114658-301SEG33116428-301

SEG39129264-305

SEG33116459-301

SEG33120761-301

SEG39136091-3016ft

SEG39137981-801 (2X)3ft

SEG39136090-301 / -302

SEG33107631-301 andSED33108703-304


Documentation Updates

• G5787B - T61p GCAR • add new components: alternate HDDs, cables, adapters.

– CRCP to provide checklist to T61 Interface• JSC 64268 - T61p PTRS – no changes• JSC 64267 - T61p IRD – no changes; Memo

documenting how ISS DDRS HW meets Section 4. • MATL-08-016-USA_R1 - Materials Analysis – update

to apply to new HDDs & Cables



AMS-02 ISS DDRS Requested Certification Hardware


Certification Testing Class 1 COTS Class 3 Provided By

T61p Laptop 1 2 ISS

T61p 160 GB C: Hard Drive(Prime installed) 1 2 ISS

T61p Internal Battery(installed) 1 2 ISS

T61p Ultrabay Adapter Assy(installed) 1 2 ISS

T61p Firmware/BIOS 1 2 ISS

T61 Power Supply 1 2

T61p Ultrabay Adapter Assy 1 2 ISS


AMS-02 ISS DDRS GFE Provided Parts/Materials


Certification Testing Part Number Qty Provided By

T61p Laptop SEG33120761-301 1 ISS

T61p 160 GB C: Hard Drive(Prime installed) SEG33120738-301 1 ISS

T61p Internal Battery(installed) SEG33120739-301 1 ISS

T61p Ultrabay Adapter Assy(installed) SEG33120741-301 1 ISS

T61p Firmware/BIOS SKG33120762_C 1 ISS

T61p 160 GB D: Hard Drive(uninstalled data spare) SEG33120738-301 3 ISS

T61p Ultrabay Adapter Assy SEG33120741-301 1 ISS

PGSC DC PWR cable SEG33116459-301 1 ISS

DC PWR SUPLY SEG33116428-301 1 ISS

DC PWR SUPLY cable SEG39129264-305 1 ISS

PS28 Power Strip Assembly SEG33114657-301 1 On-orbit

PS-28 Junction Box SEG33114658-301 1 On-orbit

PS28 Cable Assembly SEG33114659-301 1 On-orbit

28 VDC, 20 AMP Adaptor Cable Assy SEG33112598-301 1 On-orbit

Desk Top Plate Assembly SED33108703-304 1 ISS

Multi-Use Bracket Assembly SEG33107631-301 1 ISS


Deliverables: Hard Drive Assumptions

• AMS Hard Drive (SEG39137974) (7 of -801; 3 of -802)– COTS; 500GB or more– Acceptable alternate to (160 GB) SEG33120738-301– Conformal coating to protect exposed circuitry on AMS drives– Compatible with Windows XP, AMS software– Compatible with SKG33120762 Firmware/Bios Configuration– Certification by similarity: EMI; no vibe, no thermal– Ionizing Radiation testing – Engineering eval only (Preferred HD +

2 alternate HDs)– GCAR functional testing: with T61p at SCTF lab– TPS: Sharp edges, burrs, labeling, cleanliness– AMS data & S/W is stand-alone and not part of the HD cert effort



ESCG 14

Certification Approach:• Modify existing T61p laptop Government Certification Acceptance

Request:– Existing T61p GCAR is Criticality (Crit) 1– AMS-02 ISS DDRS added to T61p GCAR as Crit 3 H/W and Crit 3 function

• AMS-02 ISS DDRS delivered per AMS process: DD-250 and JR-1027 ADP• Testing:

– EMI testing: (ISS levels: emissions and susceptibility)• USB Adapters• HDD may be by similarity, memo

– Ionizing radiation susceptibility – mission success - engineering eval testing only

– Early engineering evaluation functional at SCTF SVF– Interface Verification Testing @ KSC test-bed with AMS Payload

• Analysis– Materials analysis memo (flammability, out-gassing, toxicity)

AMS-02 ISS DDRS - Certification

April 13, 2010



ST FiberConnector

USBConnector

ISS DDRS Design Statususb/HRDL Adapters SEG39136090-301 / -302

Labels will differentiateTransmitter & Receiver

•Purpose: Converts HRDL fiber signal to USB (one each transmit and receive).

•Design: Aluminum extruded housing, conformal coated PCB.

•Materials: IVA compatibility assessment to be performed.


ACRONYMS

ESCG 16

Acronym Description/Meaning

AMS Alpha Magnetic Spectrometer

COTS Commercial Off-the-shelf

DDRS Digital Data Recording System

EMI Electro-magnetic Interference

ESCG Engineering Science Contract Group

ESD Electrostatic Discharge

GFE Government furnished equipment

HDD Hard Disk Drive

HRDL High Rate Data Link

ISS International Space Station

ISSLAN ISS Local Area Network

MDL Mid-deck Locker

PWR Power

PDA Pre-Delivery Acceptance

PIA Pre-Installation Acceptance

TIM Technical Interchange Meeting

UIP Utility Interface Panel

USB Universal Serial Bus

April 13, 2010

Documents

Alpha Magnetic Spectrometer-02 ISS Digital Data Recording System (DDRS)