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Propellant Tanks
Manufacturing
Bladder Tanks
39 litre
Surface Tension Tanks
104 Litre
176 Litre
177 Litre
235 Litre
282 Litre
235 to 516 Litre
700 to 1108 Litre
769 Litre
1207 Litre
Spin Stabilised Tanks
218 Litre
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Satellite Surface Tension Propellant Tanks
Propellant tanks for satellites, spacecraft, space probes and AOCS systems
As the name implies, surface tension tanks exploit the surface
tension properties of the propellant to control, manage and deliver
gas-free oxidiser or fuel, especially under micro-g conditions.
This advanced technology, developed at Astrium Bremen, maximises the
use of the available propellant, thereby minimising residuals, enabling
the life of Geostationary satellites to be increased by up to 15
years and beyond.
The Bremen Production
Centre have been producing surface tension propellant tanks for
almost 40 years. During that time, the Centre has mastered the essential
technologies necessary for reliable and highly efficient propellant
tanks, propellant management systems and propellant acquisition
devices. The Centre is now European leader for the supply of surface
tension propellant tanks for satellites, spacecraft, orbital platorms,
interplanetary vehicles and space probes.
Development History
The 1st generation of surface tension tank was developed for Unified
Propulsion Systems and was
first used on the communication satellites TV-Sat and TDF-1.
The tank comprised two chambers. An upper chamber containing propellant
for the Apogee Boost Manoeuvre. A lower
chamber incorporating a communicating drainage device that enables
virtually all of the remaining propellant to be
utilised.
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1. Upper chamber
2. Lower chamber
3. Intermediate bottom
4. Draining device
5. Screen in intermediate bottom
6. Screen in sump adapter
7. Gas port
8. Propellant port
9. Venting device
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2nd Generation OST 21/0, 22/X,
23/0, 24/0
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The 2nd generation of surface tension tank was developed for bipropellant
propulsion systems.
The propellant management device is common to a variety of different
propellant tank geometries.
The main feature of the tank is a Propellant Refillable Reservoir
(PRR) for larger quantities of
propellant to support high acceleration station keeping manoeuvres.
Replenishment of the PRR is performed by high efficiency Propellant
Acquisition Vanes (PAV) within a short period of time
and in low acceleration phases.
Special mesh screens ensure that only gas free propellant is admitted
to the propellant outlet.
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1. Propellant Acquisition Vanes
2. Propellant refillable reservoir
3. Upper screen
4. Lower screen
5. Propellant port
6. Venting tube
7. Gas port
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The 3rd generation of surface tension tank was developed for monopropellant
systems.
The main feature of this generation tank is a highly effective
Propellant Management Device enabling
propellant pumping to the outlet port in real time with the consumption
of the thrusters.
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1. Propellant acquisition vanes
2. Gas port
3. Propellant port
4. Sump plate
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Surface Tension Propellant
Tank Range
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104 litre
Surface Tension Propellant Tank OST 31/0
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Volume (net)
Propellant volume
Propellant
MEOP
Proof pressure
Burst pressure
Mass
Pressurant gas
Geometry
Interface fixation
Materials
- pressure vessel
- fluid ports
- PMD
Heritage
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104 litres
78 litres (Blow down 4:1)
Hydrazine (N2H4)
24.6 bar
36.9 bar (1.5 x MEOP)
49.2 bar (2 x MEOP)
6.4 kg
Helium or nitrogen
Spherical
Pole mounting, rigidly fixed at propellant port boss.
Ti6AlV st (3.7164.7)
Ti6AlV st (3.7164.1)
All titanium.
Globalstar, Theos, Pleiades, RocSat
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More Information
PDF
Brochure - Propellant Tank OST 31-0
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176 litre
Surface Tension Propellant Tank OST 33/0
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Volume (net)
Propellants
MEOP
Proof pressure
Burst pressure
Mass
Pressurant gas
Geometry
Interface fixation
Materials
- pressure vessel
- trunnion/ports
- PMD
Heritage
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176.5 litres
Hydrazine (N2H4)
24.63 bar
36.95 bar (1.5 x MEOP)
49.26 bar (2 x MEOP)
13.5 kg
Helium or nitrogen
Spherical, elliptical domes with or without variable length
cylindrical intersections
4 equatorial trunnions with MJ16 x 1 thrAstrium.
Ti6AI4V STA (3.7164.7)
Ti6Al4V st (3.7164.1)
Ti6Al4V st (3.7164.1)
Cosmo /SkyMed .
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More Information
PDF
Brochure - Propellant Tank OST 33-0
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177 litre
Surface Tension Propellant Tank OST 31/1
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Volume (net)
Propellant volume
Propellant
MEOP
Proof pressure
Burst pressure
Mass
Pressurant gas
Geometry
Interface fixation
Materials
- pressure vessel
- fluid ports
- PMD
Heritage
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177 litres
132 litres (Blow down 4:1)
Hydrazine (N2H4)
24 bar
36 bar (1.5 x MEOP)
48 bar (2 x MEOP)
<15 kg
Helium or nitrogen
Spherical, elliptical domes with or without variable length
cylindrical intersections.
Pole mounting, rigidly fixed at propellant port boss.
Ti6AI4V STA (Hemisphere and Rings 3.7164.7)
Ti6AI4V annealed (3,7164.1)
All titanium.
Aeolus
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More Information
PDF
Brochure - Propellant Tank OST 31-1
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235 litre
Surface Tension Propellant Tank OST 21/0
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Volume (net)
Propellants
MEOP
Proof pressure
Burst pressure
Mass
Pressurant gas
Geometry
Interface fixation
Materials
- pressure vessel
- suspension port
- PMD
- screens
Heritage
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235 litres
MON, MMH
22.0 bar
33.0 bar (1.5 x MEOP)
44.0 bar (2 x MEOP)
16 kg
Helium or nitrogen
Spherical with cylindrical intersection
12 suspension tabs with M6 x 1 floating nuts
Ti6AlV st (3.7164.7)
Ti6AlV st (3.7164.1)
Ti99.4 (3.7034.1) and Ti6Al4V (3.7164.1)
304L (1.4306), qualified also for Ti99.4 (3.7025.1)
Amos
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More Information
PDF
Brochure - Propellant Tank OST 21-0
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282 litre Surface
Tension Propellant Tank OST 25/0
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Volume (net)
Propellants
MEOP
Proof pressure
Burst pressure
Mass
Pressurant gas
Geometry
Interface fixation
Materials
- pressure vessel
- suspension port
- PMD
- screens
Heritage
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282 litres
MON, MMH
22.0 bar
21.0 kg
Helium or nitrogen
Cassini with a cylindrical Intersection
12 suspension tabs with M6 x 1 floating nuts
Ti6Al4V sta (3.7164.7)
Ti6Al4V sta (3.7164.1)
Ti99.4 (3.7034.1) and Ti6Al4V (3.7164.1)
304L (1.4306), qualified also for Ti99.4 (3.7025.1)
Amos 2, Amos 3
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More Information
PDF
Brochure - Propellant Tank OST 25-0
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235 to 516
litre Surface Tension Propellant Tank OST 01/X
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Volume (net)
Propellants
MEOP
Proof pressure
Burst pressure
Mass
Pressure gas
Geometry
Interface fixation
Materials
- pressure vessel
- suspension port
- PMD
- screens
PMD
Heritage
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235 to 516 litres
MON, MMH
17.5 bar
26.25 bar (1.5 x MEOP)
41.8 bar (2 x MEOP)
16 to 29 kg
Helium or nitrogen
Spherical, elliptical or cassini domes with or without variable
length cylindrical intersections.
From 3 to 24 suspension tabs with floating nuts, respectively
polar bearings.
Ti6AlV st (3.7164.7)
Ti6AlV st (3.7164.1)
Ti99.4 (3.7034.1) and Ti6Al4V (3.7164.1)
304L (1.4306), qualified also for Ti99.4 (3.7025.1)
The surface tension Propellant Management Device (PMD) is
specifically designed for a Unified
geostationary satellite
Propulsion System (UPS).
The tank consists of two chambers. A large upper chamber
for
Apogee Boost Motor propellant. A smaller lower chamber
having
a full communication draining device for principally unlimited
liquid expulsion during attitude and orbit control manoeuvres.
All main functional performance characteristics may be
controlled on ground.
TV-Sat, TDF, Tele-X, Italsat, DFS (Kopernikus), Eutelsat-2,
Turksat, Nahuel, Insat-2A to D.
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More Information
PDF
Brochure - Propellant Tank OST 01-X
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700 to 1108
litre Surface Tension Propellant Tank OST 22/X
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Volume(net)
Propellants
MEOP
Proof pressure
Burst pressure
Mass
Pressure gas
Geometry
Interface fixation
Materials
- pressure vessel
- suspension port
- PMD
- screens
Application
PMD
Functional performance
Heritage
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700 to 1108 litres
MON, MMH
19.5 bar
24.37 bar (1.25 x MEOP)
29.25 bar (1.5 x MEOP)
36 to 49 kg
Helium or nitrogen
Cassini domes with variable length cylindrical intersections
24 suspension tabs with M8 x 1 floating nuts
Ti6AlV st (3.7164.7)
Ti6AlV st (3.7164.1)
Ti99.4 (3.7034.1) and Ti6Al4V (3.7164.1)
304L (1.4306), qualified also for Ti99.4 (3.7025.1)
Tank qualification is for hypergolic bipropellant propulsion
systems having a liquid apogee boost motor of 400 N thrust and AOCS thrusters of
up to 22 N
thrust.
The PMD assures the expulsion of bubble-free propellant under
micro-g conditions. The PMD comprises 4 Propellant Acquisition
Vanes (PAV) and a Propellant Refillable Reservoir (PRR).
The PRR assures that propellant is expelled under conditions
of variable disturbance accelerations, direction and level.
During micro-g coast phases, the PAV's automatically transfer
propellant to replenish the PRR.
These tanks are designed for the unified propulsion system
and manoeuvres of geostationary satellites. Namely, the transfer
from GTO to GEO and subsequent AOCS manoeuvres.
Artemis, Arabsat 2,
Cesasat, Eutelsat W24, Arabsat BSS, Thaicom 3, Sinosat, Sirius.
GEII, Astra 1K, HotBird, Sircal
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More Information
PDF
Brochure - Propellant Tank OST 22-X
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769 litre
Surface Tension Propellant Tank OST 23/0
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Volume (net)
Propellants
MEOP
Proof pressure
Burst pressure
Mass
Pressurant gas
Geometry
Interface fixation
Materials
- pressure vessel
- suspension/ports
- PMD
- screens
Heritage
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769 litres
MON, MMH
17.5 bar
26.25 bar (1.5 x MEOP)
35.00 bar (2 x MEOP)
31.7 kg
Helium or nitrogen
Spherical
24 suspension tabs with M8 x 1 floating nuts.
Ti6AlV st (3.7164.7)
Ti6AlV st (3.7164.1)
Ti99.4 (3.7034.1) and Ti6Al4V (3.7164.1)
304L (1.4306), qualified also for Ti99.4 (3.7025.1)
Insat-SE
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More Information
PDF
Brochure - Propellant Tank OST 23-0
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1207 litre
Surface Tension Propellant Tank OST 24/0
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Volume (net)
Propellants
MEOP
Proof pressure
Burst pressure
Mass
Pressure gas
Geometry
Interface fixation
Materials
- pressure vessel
- suspension/ports
- PMD
- screens
Heritage
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1207 litres
MON, MMH
tbd bar
tbd bar (1.5 x MEOP)
tbd bar (2 x MEOP)
52.5 kg
Helium or nitrogen
Cassini domes with cylindrical intersection
24 suspension tabs with M10 x 1.25 floating nuts.
Ti6AlV st (3.7164.7)
Ti6AlV st (3.7164.1)
Ti99.4 (3.7034.1) and Ti6Al4V (3.7164.1)
304L (1.4306), qualified also for Ti99.4 (3.7025.1)
Astra 1K
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More Information
PDF
Brochure - Propellant Tank OST 24-0
Contact for Further Information
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If
you require more detailed information on any of our products or services,
then please contact
us, indicating your particular areas of interest or intended application.
Your enquiry will receive our best attention.
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