COTS/CRS CommercialResupplyServicesfortheISS

INNOVATION YOU CAN COUNT ON®

COTS/CRS

INTRODUCTION & SYSTEM OVERVIEW

Under a Commercial Orbital Transportation Services

(COTS) cooperative agreement, Orbital and NASA are

jointly developing a new space transportation system

to demonstrate the capability to provide cargo delivery

servicestotheInternationalSpaceStation(ISS).TheCOTS

programwillinvolvefull-scaledevelopmentanda2012flight

demonstration of a commercial cargo delivery system, and

consistsoftwoelements:

• TheAntares™ medium-class space launch vehicle

• TheCygnus™ advanced maneuvering spacecraft, which

includes a pressurized cargo module developed by Orbital

and its industrial partner Thales Alenia Space

WiththeawardoftheCommercialResupplyService

(CRS)contract,NASAselectedOrbitaltoprovideeight

pressurizedcargomissionsbeginningin2012andrunning

through2015.ForNASA,CRSwillprovideaU.S.-produced

and-operatedautomatedcargodeliveryserviceforISS

logisticsupport,tocomplementRussian,Europeanand

JapaneseISScargovehicles.

MuchofthedevelopmentoftheOrbitalCOTS/CRSsystem

isinternallyfunded.Industrialpartnersincludesomeof

the world’s leading space companies providing heritage

subsystems with flight-proven heritage to ensure high

reliability.TosupporttheCOTS/CRSmissions,newground

support and launch facilities are being built at NASA’s

WallopsFlightFacility,Virginia.

ANTARES SPACE LAUNCH VEHICLEAntares is a two-stage launch vehicle designed to provide responsive, cost-effective,

and reliable access to orbit and Earth escape for medium-class payloads weighing

over5,000kg.Antaresisdesignedtobeahighly-reliablelaunchertomeetNASA

Category3andsimilarDoDmissionsuccessstandards,andincorporatesflight-proven

subsystems to reduce development cost, schedule and risk.

SYSTEM FEATURES• Incorporatesbothsolidandliquidstagesandflight-proventechnologies

tomeetmedium-classmissionrequirements

• Providessubstantialpayloadperformanceintoavarietyoflow inclination low-Earth and sun-synchronous orbits and interplanetary trajectories

• 3.9meterfairingaccommodateslargepayloads

• Streamlinedvehicle/payloadintegrationandtestingvia simplified avionics interfaces reduces time from encapsulation to lift-off

• Initiallaunchcapabilityin2012fromWallopsFlightFacility(WFF)

• Capableoflaunchingsingleandmultiplepayloads

• CompatiblewiththeWesternRangeatVandenbergAirForceBase(VAFB),EasternRangeatCapeCanaveralAir Force Station (CCAFS) and Kodiak Launch Complex (KLC)

Launch Vehicle • Diameter:3.9meters

• Height:40.0meters

• Mass:290,000kg

Stage 2 • ATKCASTOR®30B/30XLsolidmotor

(CASTOR120heritage)withthrustvectoring

• AvionicsusingOrbitalMACHcomponents

Stage 1• TwoAerojetAJ26-62engineseachwith

independent thrust vectoring

• Liquidoxygen/kerosenefueled

• Orbitalresponsibleforsystemdevelopmentandintegration

• CoretankassemblydesignanddesignverificationbyKBYuzhnoye(Zenit-derivedheritage)

• CoretankassemblyproductionbyYuzhmash

• Stagecontrollerusingflight-provenOrbitalMACHcomponents

©2011 Orbital Sciences Corporation G008_09f

CYGNUS ADVANCED MANEUVERING SPACECRAFT

The Cygnus advanced maneuvering spacecraft is a low-risk design incorporating

elements drawn from Orbital and its partners’ existing, flight-proven spacecraft

technologies. Cygnus consists of a common service module and a pressurized cargo

module. The service module incorporates avionics, propulsion and power systems from

Orbital’s flight-proven GEOStar™ and LEOStar™ satellite lines.

The pressurized cargo module is based the on the Multi-Purpose Logistics Module

(MPLM), developed by Thales Alenia Space for NASA. The module will carry crew

supplies, spares and scientific experiments.

Service Module (SM)

• Design,integrationandtestperformedbyOrbital

• Heritage:GEOStar,LEOStar

• GrossMass:1,800kg

• PowerGeneration:2fixedwingsolararrays,ZTJGalliumArsenidecells

• PowerOutput:3.5kW(sun-pointed)

• Propellant:Dual-modeN2H4/MON-3orN2H4

Pressurized Cargo Module (PCM)

• Design,integrationandtestperformedbyThalesAleniaSpace

• Heritage:Multi-PurposeLogisticsModule

• GrossMass:3,500kg

• TotalCargoMass:2,000kgStandard/2,700kgEnhanced

• PressurizedVolume:18.9m3/27m3

• BerthingatISS:Node2CommonBerthingMechanism(CBM)

ORBITAL SCIENCES CORPORATION

21839AtlanticBoulevard,Dulles,VA20166703/406-5000www.orbital.com

FOR MORE INFORMATION:

Mr.FrankDeMauro,VPandProgramDirectorCOTS/CRSProgram 703/948-8766,demauro.frank@orbital.com

Mr.CarlWalz,DeputyProgramManagerCOTS/CRSProgram 703/404-7475,walz.carl@orbital.com