NPS Cubesat Launcher - mstl.atl.calpoly.edumstl.atl.calpoly.edu/~workshop/archive/2009/Summer... ·...
Transcript of NPS Cubesat Launcher - mstl.atl.calpoly.edumstl.atl.calpoly.edu/~workshop/archive/2009/Summer... ·...
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a
Naval Postgraduate School2009 CubeSat Developers Workshop
Utah State University
Naval Postgraduate School
Space Systems Academic Group
Monterey, CA 93943
NPS CubeSat Launcher (NPSCuL)
Program Update
Nicholas McGrail, Structural Analysis
LCDR (s) Christina Hicks, USN (Program Manager)
Shane Driscoll, (Integration & Testing)
Dr. Jim Newman ( Professor, Space Systems)
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What is “coach class” on a launch vehicle?
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What is “coach class” on a launch vehicle?
The “airliners” of the US unmanned space program.
DELTA ATLAS
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The under-served customer
And
The “limited leg-room” seat
What is “coach class” on a launch vehicle?
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Seating Arrangement
“First Class”
“Business Class”
“Coach Class”
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NPSCuL-Lite Design
8 P-PODS
Up to 24U volume of
CubeSats
ESPA and ABC
Compatible
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Atlas V ABC/SP Installation
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Integration Process
CubeSat Flight
Experiments
a
Integration & Launch
Space Test
Program
(or other launch
provider)
P-PODS and Sequencer integrated into NPSCuL
Finished NPSCuL delivered for integration onto ESPA/ABC
CubeSats from NPS
and other USG
partners
University CubeSats integrated into P-PODS at Cal Poly
Finished P-PODs delivered to NPS for integration into NPSCuL
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NPSCuL-LITE Test Program
Structure Qualification– Launch environments +6dB using P-
POD Mass Models (P2M2) to simulate loaded P-PODs
– Must accommodate minimum expected CubeSat mass (1 kg/U)
– NPS will perform all structural tests
Functional Developmental Testing
– On-board electronics fire the deployment
systems in sequence
– Currently in development by a launch
provider
– NPS to develop mission specific electrical
harnesses
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Testing Progress To Date
Qualification Testing
– Random Vibration Qualification
Testing
– Test of NPSCuL-LITE with mass
models of P-PODs and
sequencer
– Mass model separation at 40s
into 0dB Random Vibe
Post Testing Analysis
– Widespread loss of preload on
both structure and mass models
– Witness marks indicate gapping
between mass models and walls
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Loss of Preload
11
8 7
6 54 3
2 1
ColorPreload
(in-lbs)
>551
45-55
35-45
25-35
<25
1 Initial Preload
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“In the Direction of Goodness”
Redesigned P-POD Mass Models (P2M2)
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Old New
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“In the Direction of Goodness”
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Structural Design Modifications
– Eight (8) P-POD mounting holes
– Countersunk to socket head cap
bolts
– Bolts upgraded to A286
– Holes for ground support equipment
Upcoming
‒ NPSCuL assembly
‒ P2M2 integration
‒ Qualification testing (6 P2M2, 2 P-
PODs)
‒ Build and acceptance test flight unit
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Coach Class to OrbitNPSCuL
Questions?
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NPSCuL Contacts
• Principal Investigators:
Dr. Jim Newman
Professor, Space Systems Academic Group, NPS
(831) 656-2487
Dr. Rudy Panholzer
Chairman, SSAG, NPS
(831) 656-2154
Mr. Dan Sakoda
Research Associate, SSAG, NPS
• Project Manager:
LCDR(s) Christina Hicks