Changing the economics of space
Mission
••OTB-2
Hosted Payload Ride-Sharing
Opportunity
Surrey’s second Orbital Test Bed (OTB-2)
ride-share mission is dedicated to carrying
demonstration payloads, subsystems, and
equipment into low-Earth orbit aboard a flightproven satellite bus. OTB-2 will fly Surrey’s
own experimental optical payload.
The Surrey hosted payload business model
is unique in the industry and continues its
tradition of providing cost-effective access
to space. The ride-share concept appeals
to organizations that need to test satellite
components or payload concepts in space
with low risk and at a fraction of the cost of
dedicated missions.
We have completed the flight manifest for
our five-year OTB mission now scheduled
for launch in 2016. The first spacecraft
integrated at the satellite facility in Englewood,
Colorado, OTB will carry five experimental
payloads for Surrey, NASA JPL, Air Force
Research Laboratory, and academic
institutions. Similar to OTB, OTB-2 is based
on the SSTL-150 platform developed by our
parent company in the U.K. and flown on
numerous scientific and operational missions.
In addition to the primary Surrey payload, the
Representative mechanical drawing
baseline OTB-2 design will have capacity to
support payloads up to 50 kg and 50 W, although
we can adapt the design to accommodate larger
payloads if required.
We will manufacture OTB-2 at our facility in
Colorado where our engineering personnel adhere
to Surrey satellite development, integration, and
test processes refined during 47 successful
missions spanning three decades.
If you would like us to perform an assessment
of your payload’s mission and operational
requirements, please download and complete our
Candidate Payload Requirements Form available at
www.surreysatellite.com/rideshareopps or contact
Brent Abbott at [email protected].
Mission
••OTB-2
Baseline Mission Compatibility
Orbit Average Payload Power
Platform Description
50 W (100 W peak) EOL
(expandable with the
addition of deployable solar
panels)
Baseline Payload Mass
50 kg (expandable)
Bus Dry Mass
103 kg
Science Data Downlink
105 Mbps (X-band) or
8 Mbps (high-rate S-band)
Science Data Storage
16 Gbytes (redundant and
expandable)
Pointing Knowledge
25 arcsec (1 sigma) all 3
axes
Pointing Control
36 arcsec (1 sigma) all 3
axes
Pointing Stability (Jitter)
1.5 arcsec/sec
Orbital Position Knowledge
10 m
Mission Design Life
7 years
Compatible Launch Vehicles
Falcon, Atlas, Delta, Athena,
and other launch vehicles
Types of Orbits Available
LEO 400 km to 1000 km,
any inclination
External Payload Volume
730 x 455 x 774 mm
Internal Payload Volume
279.5 x 231.5 x 252.5 mm
Attitude Control System
3-axis control with reaction
wheels, magnetorquers, and a
star tracker
Batteries
Li-ion cells providing 15 Ah
capacity
Solar Arrays
Triple-junction GaAs cells, total
area 1.15 m2
Main Bus Voltage Range
22–34 V
C&DH Bus Architecture
Dual-redundant controller area
network (CAN) bus
Communication Up/
Downlink
S-band uplink/S-band downlink
(expandable to X-band)
Structure
Aluminum and aluminum-skinned
honeycomb panels
Propulsion
None (expandable to include gas
propulsion)
Delta V
Dependent on the propellant used
Thermal Control
Primarily passive, plus limited use
of heaters
Heritage & Programmatic Information
Heritage Missions
RapidEye, DMC3, TopSat,
Sapphire, TDS-1, CFESat
Nominal Schedule from
Order
18 months to payload integration,
22 months to launch
May 2016
The small satellite revolution started 30 years ago with Surrey Satellite Technology—the world’s premier provider of operational and
commercial satellite programs with 47 satellites launched successfully and 250-plus years of on-orbit operational experience gained.
From its Englewood, Colorado, facilities, Surrey supplies complete in-house design, manufacture, launch, and operation of small
satellites, to include remote sensing, navigation, and communications payloads, avionics suites and subsystems, ground infrastructure,
and training and consulting services.
Surrey Satellite Technology US LLC
345 Inverness Drive South, Suite 100 | Englewood, CO 80112 | 303.790.0653 | www.surreysatellite.com
Surrey US is AS 9100:2009-certified | GSA Contract Holder | Shop Surrey online at www.surreysatellite.com/shop