esa who does what

8/13/2019 Esa Who Does What

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T E C H N I C A L IN F O R M A T IO N

w w w . a r i a n e s p a c e . c o m

P u b l i c

a t i o n : A r i a n e s p a c e I n t e r n a t i o n a l A f f a i r s a n d C o r p o r a t e C o m m u n i c a t i o n s - D e s i g n a n d p r i n t i n g : B y T h e W a y - A d a p t a t i o n : J . L e n

o r o v i t z - P h o t o s : F . B u x i n , B . P a r i s ,

D . P a r

k e r , A e r o s p a t i a l e M a t r a L a n c e u r s , E S A , M a t r a M a r c o n i S p a c e , S e r v i c e O p t i q u e C S G

, S n e c m a , X - I l l u s t r a t i o n s : D . D u c r o s , M e d i a l o g i e . © A r i a n e s p a c e 1 9 9 9 .

E u r o peH e a d o f f i c e

Boulevard de l’EuropeB.P.177 - 91006 Evry Cedex - France

Tel:+33 1 60 87 60 00Fax:+33 1 60 87 62 47

U S AS ub s idia r y

ARIANESPACE Inc.601 13th Street - N.W.

Suite 710 NorthWashington D.C.20005 Tel:+1 202 628-3936Fax:+1 202 628-3949

F r en ch G uia na

F acil i t ies

ARIANESPACE KourouB.P.80997388 Kourou Cedex Tel:+594 33 67 07Fax:+594 33 69 13

S ing a p or eL i a i s o n o f f i c e

ARIANESPACE ASEAN OfficeShenton House #25-06

3 Shenton WaySingapour 068805

Tél :+65 223 64 26Fax :+65 223 42 68

J a p a nL i a i s o n o f f i c e

ARIANESPACE TokyoKasumigaseki Building,31Fl.

3-2-5 KasumigasekiChiyoda-ku Tokyo 100-6031

Tél :+81 3 3592-2766Fax :+81 3 3592-2768


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Arianespace is the world's com-

mercial space transportation

leader, earning this position

through the management,

marketing and operation of

Europe's reliable Ariane 1-4

launcher series.

To meet tomorrow's market

requirements, Arianespace is

introducing the Ariane 5 heavy-

lift launcher.This capable new

vehicle is perfectly tailored to

the increasingly diversified

demand for service - including

heavier and larger satellites,

a wider range of orbits and

combined missions. Ariane 5

is based on a modern design

offering excellent performance

and reliability, which ensures

Arianespace will continue thehigh quality of service that

has been its key to success. In

keeping with the proven Ariane

philosophy,Ariane 5 will evolve

into a family of launchers

that responds to the space

transportation challenges of the

21st century.

a r ia n e 5

T h e r e f e r e n c e f o r n e w g e n e r a t io n h e a v y -lif t la u n c h e r s


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T h e m a in c r y o g e n ic s t a g e

This 30-meter-tall stage is the core of the Ariane 5launcher. It operates for a total of 589 sec., and

includes the attach points for Ariane 5's two solidboosters.The main cryogenic stage is ignited onthe pad, and once the two solid boosters are jettisoned in flight, it continues as the solesource of propulsion for an additional 459 sec.of powered flight. The cryogenic propellant

used in the stage is non-toxic. At the end ofits flight, the main cryogenic stage reenters theatmosphere and disintegrated

over the Ocean.

T h e s t o r a b le p r o p e lla n t s t a g e( E P S )

The EPS is the first upper stage developed for Ariane5.It propels the launcher’s payload to its final orbitand provides an accurate orbital injection.The stagecarries 9.7 metric tons of propellant (nitrogentetroxide and monomethyl hydrazine) for its 3 metricton-thrust,pressure-fed Aestus engine.

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The Ariane 5 launcher consists of the centralcryogenic main stage,two solid booster stages,and an upper stage.Using a limited numberof engines, this architecture is both simpleand robust. It provides a significant growthpotential, particularly for the upper stagecomponent.

a r ia n e 5

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2 T h e V u lc a in e n g i n e

The Vulcain engine powers Ariane 5's maincryogenic stage.It provides up to 116 metric tonsof thrust in vacuum.The Vulcain is ignited on thelaunch pad seven seconds before liftoff, allowingfull monitoring of the engine during its startup and

the stabilization of thrust.3 T h e s o l id b o o s t e r

s t a g e s ( E A P )

The mission of the two solid boosters is to propel the725-metric ton Ariane 5 from launch table withan acceleration of 0.5 G at liftoff. Standing morethan 30 meters tall, the boosters are loaded with237.8 metric tons of solid propellant each. Theydeliver a combined thrust of 1,370 metric tonsat liftoff - which is more than 90 percent of thetotal launcher’s thrust at the start of flight. The

boosters burn for 130 sec.with an average thrust of 1,000 metric tons before they are separated over adesignated zone of the Atlantic.They can be recovered for

post-flight analyses.

L if t in g p o w e r


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a r ia n e 5

> T h e v e h i c le e q u i p m e n tb a y

Acting as the Ariane 5’s “brain”,the Vehicle

Equipment Bay incorporates most of itsavionics – including the two onboardcomputers for flight guidance (one primeand one backup), and the primary andbackup inertial measurement units thatprovide guidance and attitude data to thecomputers.The Vehicle Equipment Bay alsohouses the attitude control system, whichsupplies launcher roll control after thebooster separation, and 3-axis controlduring the upper stage’s burn and payloaddeployment maneuvers.

> T h e d is p e n s e r s

Ariane 5 can be fitted with two dispensertypes for missions with clusters of spacecraft, in particular for thedeployment or replenishment of satellite

constellations.The “platform” type is usedto carry spacecraft that are designed withmounting interfaces at their base. The“boom” type accommodates satelliteswith attach points on their interior face. The dispensers are conceived for use onboth dedicated missions and flights inwhich the satellite cluster is launchedwith another satellite payload.

> T h e p a y lo a d f a i r in g s

Two payload fairing versions are available on Ariane 5,both with the usefulinner diameter of 4.57 m.The short fairing version, which is 12.7 meterslong, can accommodate payloads more than 11.5 meters high.The long

fairing, which is 17 meters long, can house payloads more than15.5 meters high. These dimensions are exceptionally large for thecommercial launch market, and they enable Ariane 5 to launch all typesof satellites currently in service,as well as those in development.

These fairings incorporate acoustic protection to provide an excellentenvironment for payloads during all phases of launch.The combination of along or short fairing with the Sylda or Speltra satellite deployment systemsallows two or more satellites to be launched by an Ariane 5.The Sylda andSpeltra adapt Ariane 5 to the size and mass of the spacecraft to be orbited.

To fulfill a full range of missions,Ariane 5 can be fitted with a varietyof payload fairings, adapters and structures for single-, dual- ormultiple-payload launches.

Dual GTO M ult ip le LEO

Scient if ic ATV

P a y lo a d f a ir in g s f o r a l l m is s io n s


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> T h e p a y lo a d a d a p t e r s

To accommodate payloads weighing from

1,000 kg to 18,000 kg, Ariane 5 can befitted with 9 different adapter models. These adapters are either conical orcylindrical, and have separation interfacediameters of 937 mm,1,194 mm,1,663 mm,1,666 mm, 2,624 mm or 3,936 mm.Theadapters,most of which have a clamp bandpayload separation system,are compatiblewith all existing satellite platforms.

> T h e A r ia n e s t r u c t u r ef o r a u x i l i a r y p a y l o a d s( A S A P )

The ASAP platform,which can be mountedon top of the upper stage as well as on theSpeltra or Sylda structures,carries mini- ormicrosatellites as secondary payloads.When located under a primary payload,

the ASAP platform accommodates up toeight microsatellites,each weighing underthan 120 kg. When mounted inside adedicated Sylda structure, it can carry upto four minisatellites weighing up to 300 kgeach,or two 300 kg minisatellites and six120 kg microsatellites.

> T h e e x t e r n a l s t r u c t u r ef o r d u a l la u n c h e s

( S p e lt r a ) The Speltra structure,which is positionedbetween the upper stage and the payloadfairing, allows Ariane 5 to carry twoprimary payloads on a single flight. Onesatellite is accommodated inside theSpeltra, while the other is mounted atopthe Speltra and is enclosed in the payloadfairing.The Speltra can house payloads withexternal diameter of 4.57 m.The standard

Speltra version, which is 7 m high,is sizedfor satellites of more than 6 m high inlaunch configuration.A short version anda stretched version of Speltra are alsooffered.

> T h e i n t e r n a l s t r u c t u r ef o r d u a l la u n c h e s

( S y ld a 5 ) The Sylda 5 structure is housed inside thefairing, and allows Ariane 5 to launch twoprimary payloads on a single flight. It has auseful inner diameter of 4 meters, andexists in 6 versions to accommodatesatellites with a maximum height of 2.9 to4.4 meters.

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T E C H N I C A L IN F O R M A T IO N a r ia n e 5

To accommodate all payloads in the marketplace,Arianespace hasdeveloped a full range of payload adapters for all satellite/launchercombinations: single-payload launch, double launch, and auxiliarypayloads.

A d a p t e r s f o r a l l p a y l o a d s


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L a u n c h Z o n e

# 3

B A FF in a l A s s e m b ly B u ild in g

B ILL a u n c h e r In t e g r a t io n B u i ld in g

C D L 3L a u n c h C o n t r o l C e n t e r # 3

W a t e r To w e r

T E C H N I C A L IN F O R M A T IO N a r ia n e 5

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T h e A r ia n e 5 L a u n c h C o m p le x


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G l o s s a r y

A C U P a y lo a d A d a p t e r

A e s t u s E P S e n g in e

A S A P A r i an e S t r u c t u r e f o r A u x ilia r y P a y lo a d s

B A F F in a l A s s e m b l y B u i ld i n g

B IL L a u n c h e r I n t e g r a t i o n B u i l d i n g

C N E S C e n t r e N a t i o n a l d ’E t u d e s S p a t ia le s

C S G G u ia n a S p a c e C e n t e r

C U P a y l o a d

E A P S o l id B o o s t e r S t a g e

E L A - 3 A r ia n e L a un c h C o m p le x # 3

E P C C o r e C r y o g e n ic S t a g e

E P C U P a y lo a d P r o c e s s in g F a c ilit y

E P S S t o r a b l e P r o p e l l a n t S t a g e

E S A E u r o p e a n S p a c e A g e n c y

E S C - A C r y o g en ic U p p e r S t a g e , m o d e l A , w it h H M -7e n g i n e

E S C - B C r y o g e n ic U p p e r S t a g e , m o d e l B , w it h V in c ie n g i n e

G E O G e o s t a t io n a r y E a r t h O r b it

G T O G e o s t a t i o n a r y T r a n s f e r O r b i t

M E O M e d iu m E a r t h O r b it

L E O L o w E a r t h O r b it

S C A A t t i t u d e C o n t r o l S y s t e m

S p e l t r a E x t e r n a l S t r u c t u r e f o r A r i an e M u lt i p le L au n c h

S y ld a A r i an e D u a l La u n c h S y s t e m

U P G G u i a n a P r o p e l la n t P l a n t

V E B V e h i c le E q u ip m e n t B a y

V in c i T h e E S C -B u p p e r s t a g e ‘s c r y o g e n ic e n g in e

V u lc a i n T h e c o r e c r y o g e n ic s t a g e ’s m a in e n g in e

Z L - 3 A r ia n e L au n c h Z o n e # 3


> W h o d o e s w h a t ?

esa who does what

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