s-17 reference model status robin lafever 21 october 2004
TRANSCRIPT
S-17 Reference ModelS-17 Reference ModelStatusStatus
Robin Lafever
21 October 2004
2
The (mostly)
ALL NEW S-17 Reference Model
Featuring TMA-65 Optics
3
The (mostly)
ALL NEW S-17 Reference Model
Featuring TMA-65 Optics
New Secondary metering structure
New Lightweighted Mirrors, with FEA
Cassegrain shutter
4
The (mostly)
ALL NEW S-17 Reference Model
Featuring TMA-65 Optics
New Secondary metering structure
New Lightweighted Mirrors, with FEA
Cassegrain shutter
New Inner and Outer Baffles, With FEA.
New Lower Baffle enclosure, With FEA
5
The (mostly)
ALL NEW S-17 Reference Model
Featuring TMA-65 Optics
New Secondary metering structure
New Lightweighted Mirrors, with FEA
Cassegrain shutter
New Inner and Outer Baffles, With FEA.
New Lower Baffle enclosure, With FEA.
Radiator and side Baffles for L2 Orbit
Spacecraft, 8 tank capacity, for L2 Orbit
6
The S-17 Model is built around Mike Lampton’s TMA-65 Ray Trace Model.
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The S-17 Model is built around Mike Lampton’s TMA-65 Ray Trace Model.
This model has a Cassegrain Mask which shapes the “useable light” Beam Envelope.
8
The S-17 Model is built around Mike Lampton’s TMA-65 Ray Trace Model.
This model has a Cassegrain Mask which shapes the “useable light” Beam Envelope.
This model also has all new Mirrors with lightweighting and FEA by Bobby Besuner.
All new Secondary Mirror Assembly
Silicon Carbide Fold-flat Mirror
9
The S-17 Model is built around Mike Lampton’s TMA-65 Ray Trace Model.
This model has a Cassegrain Mask which shapes the “useable light” Beam Envelope.
This model also has all new Mirrors with lightweighting and FEA by Bobby Besuner.
All new Secondary Mirror Assembly
Silicon Carbide Fold-flat Mirror
New Focal Plane mounts and heat shield Assembly
Note: The Focal Plane Assembly has undergone significant redesign and is not included in this model yet.
Matt Hoff presented details two weeks ago and is nearly ready to install the new Focal Plane Assy in this Model.
10
The S-17 Model is built around Mike Lampton’s TMA-65 Ray Trace Model.
This model has a Cassegrain Mask which shapes the “useable light” Beam Envelope.
This model also has all new Mirrors with lightweighting and FEA by Bobby Besuner.
All new Secondary Mirror Assembly
Silicon Carbide Fold-flat Mirror
New Focal Plane mounts and heat shield Assembly
New “dog house” lower optical bench enclosure
11
All new Secondary Mirror Assembly
Silicon Carbide Fold-flat Mirror
New Focal Plane mounts and heat shield Assembly
New “dog house” lower optical bench enclosure
New secondary Metering Structure
12
All new Secondary Mirror Assembly
Silicon Carbide Fold-flat Mirror
New Focal Plane mounts and heat shield Assembly
New “dog house” lower optical bench enclosure
New secondary Metering Structure
New Lower Baffle enclosure
13
All new Secondary Mirror Assembly
Silicon Carbide Fold-flat Mirror
New Focal Plane mounts and heat shield Assembly
New “dog house” lower optical bench enclosure
New secondary Metering Structure
New Lower Baffle enclosure
New Spacecraft with 8 tank capacity.
Suitable for L2 Orbit
14
New Lower Baffle enclosure
New Spacecraft with 8 tank capacity.
Suitable for L2 Orbit
New Inner and Outer Baffles
15
New Spacecraft with 8 tank capacity.
Suitable for L2 Orbit
New Radiator Assembly including side shields for L2 Orbit.
New Lower Baffle enclosure
New Inner and Outer Baffles
16
New Spacecraft with 8 tank capacity.
Suitable for L2 Orbit
New Radiator Assembly including side shields for L2 Orbit.
New Lower Baffle enclosure
New Inner and Outer Baffles
Same old PAF.
Needs updating.
17
Unresolved issues, work-in-progress, and leftover details:
•Focal Plane Assembly is a work-in-progress and details are NOT included in this model, but will be very soon. May need rework around the Radiator interface.
•Cassegrain shutter is being reworked and will be in the model in a few days.
•Inner Baffle (Sholl baffle) may need thermal isolation and mount details.
•Cass shutter/Sholl baffle/Optical bench interface is unresolved.
•Telescope mount flexures are work-in-progress. Will be in the model soon.
•Optical bench table needs to be modified to accept Sholl baffle.
•Fold-flat needs a subframe.
•Star Trackers (Ball CT602) need to be moved. Again. Can we put them on the Spacecraft?
•PAF needs to be updated.