S-17 Reference Model Status 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.

7 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.