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ASTRO AEROSPACE
Astro Aerospace
1
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Mark pages according to the proprietary level of information as described in Company Procedure J103 (or remove)
Since 1958 Astro Aerospace has helped enable complex missions to Earth orbit, Mars, and beyond with innovative deployable structures and mechanisms
– AstroMesh® Mesh Antenna Reflector – Storable Tubular Extendable Member (STEM™) – Telescopic Booms – Hinges and Mechanisms
Hundreds of flights – Zero Failures – Voyager – Mars Pathfinder – ISS Mobile Transporter – Inmarsat 4 – Alphasat – 2014 Launch Pending: Soil Moisture Active Passive
(SMAP)
Click Here for Overview Video
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
AstroMesh™ Reflectors
2
http://www.northropgrumman.com/BusinessVentures/AstroAerospace/Products/Pages/AstroMesh.aspx
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
• Proven: 8 AstroMesh™ reflectors successfully deployed on-orbit
• Inherently Reliable Robust Deployment Kinematics
• Accurate Surface Repeatability
• Efficient Drum-Like Structure
• High Deployed Stiffness
• Exceptionally Low mass
• High Thermal Stability
• Easily Scales
• ESD Compatible Design & PIM Free
• High structural stiffness & RF test in 1g environment at all frequencies
AstroMesh Advantage
Most Reliable Reflector Technology Available 3
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
THURAYA/GEM 12-m AstroMesh L-Band
Deployed D1 - 11/2000 D2 - 7/2003 D3 -1/2008
Proven On-Orbit Performance
• AstroMesh has been steadily developed as a product since 1990 • 8 units deployed on-orbit and are performing flawlessly
• 2 additional deployments scheduled for 2014 • 100% On-Orbit Success – No Failures – No Anomalies
AstroMesh Reflector Flight Heritage
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MBSat 12-m AM-1 S-Band
Deployed 3/2004
INMARSAT 4 9-m AM-1 L-Band Deployed FM1 - 3/2005 FM2 - 11/2005 FM3 - 8/2008
Alphasat 11-m AM-1 L-Band
Deployed 8/2013
Classified
Deployed Pending
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
Evolution of AstroMesh Family
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AM-2 18 to 50-Meter
Class
Thuraya
AM 12-Meter
INMARSAT, MBSat & Alphasat
AM-1 6 to 25-Meter Class
AM-Lite 3 to 8-Meter
Class
Reduce Stowed Diameter by 40%
Reduce Reflector Mass by 50%
• AstroMesh hardware designs for a broad spectrum of applications
– Aperture sizes from 3 to greater than 50-meter – Frequency range UHF to beyond Ka-Band
Reduce Stowed Height by 40%
SMAP
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
Comparison of Stowed Packages (12-Meter Aperture)
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3.81
AM
THURAYA
AM-1 AM-2
Starshade
2.49
3.86
The first flight design
Tighter stowed package to enable mounting on
Spacecraft sidewall
Redesigned truss articulation reduces
stowed height
INMARSAT, MBSat & Alphasat
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
AM-1 configuration
• Reduced Diameter versus 1st Generation AM – Stowed Diameter 60% of AM – Stows on Spacecraft Sidewall
• Scalable From 6 to 25-meter Aperture • Extensive Flight Heritage
– 9-m Aperture Inmarsat 4 – 12-m Aperture MBSat – 11-m Aperture Alphasat
AM 12-Meter
AM-1 6 to 25-Meter
Class
Reduce Stowed Diameter by 40%
Thuraya Inmarsat & MBSat
MBSat Inmarsat 4 Alphasat 7
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
AM-1 & AM-Lite Deployment Sequence
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Stowed Release & Bloom Motorized Deployment
Fully Deployed & Latched
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
AM-2 Configuration
AM-2 18 to 50-
Meter Class
AM-1 6 to 25-Meter
Class
Reduce Stowed Height by 40%
• AM-2 Stows into Batten Length • AM-1 Stows in Batten Plus Longeron Lengths
• AM-2 Deployed Truss Configuration Identical to AM-1
NASA Star Occulter Development Model
9 Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
AM-2 Deployment Sequence
Stowed Release & Bloom Motorized Deployment
Fully Deployed & Latched 10
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
Deployable Masts & Booms • STEM (Storable Tubular Extendible Members)
• Telescopic Tube Mast
• Hinge Products
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http://www.northropgrumman.com/BusinessVentures/AstroAerospace/Products/Pages/STEM.aspx
http://www.northropgrumman.com/BusinessVentures/AstroAerospace/Products/Pages/TelescopicTubeMasts.aspx
http://www.northropgrumman.com/BusinessVentures/AstroAerospace/Products/Pages/HingesDeployBooms.aspx
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
STEM™ (Storable Tubular Extendible Member)
STEM
BI-STEM
Interlocking BI-STEM
Benefits Very small stowed package Retractable
SELENE Lunar Sounder Antennas Hubble Solar Array Deployer
JWST Mid-Boom Deployment Actuator
Applications Linear actuators Antennas Deployment drives
Quad-STEM Deployment Actuator
12 Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
JIB Technology – Stored Energy Deployment
• Self Deploying Monopole • Non-Pyrotechnic Release Mechanization • Any Length Up 25 Feet • 1/2 to 1 3/8 Inch Diameters • Significant Flight Heritage (Over 25
Different Missions, 1000s of Deployments)
Link toHigh Speed Video
Stowed 2 in Length
Deployed 9 ft Length
Link to Full Speed Video
13 Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
Mars Pathfinder Rover Ramps
Low Mass: 1.0 kg (2.2 lb) Small Stowed Package: 7.6 cm (3.0 in) diameter 42 cm (16.5 in) long Self-Deployed Stable Structure: Supports 12.5 kg (27.6 lb) Rover Provides 136 cm (53.5 in) long ramp
Customer: JPL 14
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
Telescopic Tube Mast
Lightweight Mast Technology Enables Large Deployables
• Benefits – Modular – Robust design – Can be made from
many materials
JWST Sunshield Boom Development Unit
• Applications – Antenna support
structures – Solar array support
structure – Instrument deployment
boom – Experiment package
support – Nuclear reactor
separation boom – Deployable radiator
boom
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Link to deployment video
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
Prototype – Telescopic Tube Mast
• Deployed Length: 110 feet • Stowed Length: 8 feet • Mass: 175 lb • Deployment System: 120-lb-output force STEM
drive • Operation: Deployment and Retraction • 12 Locking pins per tube interface • Light weight thin wall composite tubes
Link to Deployment Video
16 Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
Telescopic Tube Mast
Boom - Flight Qualified & Safe Man-Rated for the
Space Shuttle Application
Small Compact & Pinless Lightweight Telescopic Tube
Mini- Telescopic Boom • Mini STEM Drive – 15 lbf • Telescopic boom approx 1” dia.
17 Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
Hinging Mechanisms
• CALM Hinge – Designed for high
stiffness boom deployment
– Low Shock – Retractable
• Hinge Line Deployment – Designed for deployment of
stacked rigid panels – High stiffness joints for high
accuracy arrays – Compact design resides within panel
thickness
• Spring Hinges – Based on Proven
STEM Technology Light flat profile
Many Motorized, Cable Driven, Spring/damper Hinges
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Link to Video Link to Video
Link to Video
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
Extendable Support Structure (ESS)
• AstroFold • Custom Designs
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http://www.northropgrumman.com/BusinessVentures/AstroAerospace/Products/Pages/ExtendibleSupportStructure.aspx
Cleared for public release; NGAS Case 14-1846 dated 9/10/14
ASTRO AEROSPACE
AstroFold – Extendable Support Structure (ESS)
ISAT Proposed SAR Structure
Sequence of Events – Release of launch tie-downs allows
small first motion of truss due to stowed strain energy
– Extension and latch-out of telescoping diagonals
– Secondary restraint is released – Cable spoolers deploy truss in
controlled and synchronized manner – Slack diagonal cords are managed
with devices developed for AstroMesh
– Longeron tensioning cables preload structure to complete deployment
– Truss can be bowed as required by differential longeron tensions
Link to Deployment Video
20 Cleared for public release; NGAS Case 14-1846 dated 9/10/14