the mechanical design of the second and third antarctic survey telescope wen haikun
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![Page 1: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/1.jpg)
The Mechanical Design of the Second The Mechanical Design of the Second and third Antarctic Survey Telescopeand third Antarctic Survey Telescope
Wen Haikun
![Page 2: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/2.jpg)
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Outline• 1. The Tube Design • 2. The Drive System Design• 3. The Low temperature test• 4.The AST3-3 Mechanical Design
![Page 3: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/3.jpg)
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Sealing Structure
Temperature compensation Structure
Titanium alloy
The Tube Structure Design
![Page 4: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/4.jpg)
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Bending angle
• Corrector mirror:2.84″
• Primary Mirror:2.12″
![Page 5: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/5.jpg)
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Primary Mirror Supporting Structure
• 9 point whiffle tree structure
• Fixed position in the middle hole.
• Flexure supporting structure
![Page 6: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/6.jpg)
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The stress and the deformation of the Mirror shape
• The max stress value :0.425Mpa
• The defromation of the mirror surface shape:
PV Value :43.7nm , RMS Value:7.2nm 。
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The focal plane System
• Switch the filter• Auto-focus system• Thermal dissipation
![Page 8: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/8.jpg)
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Deformation of the drive system
Deformation in the east-west directionMax displacement:0.935e-04mm
Deformation in the north-south directionMax displacement:0.884-04mm
![Page 9: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/9.jpg)
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![Page 10: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/10.jpg)
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Buffer and limit position structure
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Reducer improvement
• Increase the rigidity of the reducer
• The lowest frequency :14.8Hz
![Page 12: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/12.jpg)
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The Low temperature Test
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Mo He winter test
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Picture in the Anatarctic
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The tube of the third telescope
• Move the CCD to the outside of the tube
• Solve the heat problem
• easy to install and maintain
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The drive system of the third telescope
• Adjust the gaps of the gear
• Increase the rigidity of the reducer
![Page 17: The Mechanical Design of the Second and third Antarctic Survey Telescope Wen Haikun](https://reader036.vdocuments.mx/reader036/viewer/2022062423/56649eb25503460f94bb9a82/html5/thumbnails/17.jpg)
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Thankyou