Delta II 7925H - 10L Baseline workup
Launch Vehicle
Theirs Ours
• Delta II 7925H Launch Vehicle
• 10L Composite Fairing10L Stretch CompositePayload Fairing
Delta II 7925H - 10L Baseline workup
Launch Vehicle Configuration
• 10L Composite Fairing
• Launch Volume (TMA-55 or 56)
• 6019 PAF
• 2nd Stage Engine
• 7925H LV
Ours Theirs
Delta II 7925H - 10L Baseline workup
TMA-55 Launch configuration
10L fairing
Sun side envelope (270 deg)
TMA-55 OTA (Baffle removed)
Radiator side envelope (90 deg)
2nd stage engine
7925 Launch Vehicle
Delta II 7925H - 10L Baseline workup
10L Composite Fairing
• 6019 PAF
• 2nd Stage Engine
Delta II 7925H - 10L Baseline workup
TMA-55 Optics
Delta II 7925H - 10L Baseline workup
TMA_56 Optics
Delta II 7925H - 10L Baseline workup
TMA-55 and TMA-56 Comparisons
TMA-55
• Very thin Optical Bench Plate
• Cassegrain Focus is buried inside Primary
• Pickoffs not accessable
• Filter Wheel limits beam rotation
• Thick Optical Bench Plate (250mm)
• Room for detector mounts and shield
• Multiple Pickoffs
TMA-56
Delta II 7925H - 10L Baseline workup
TMA-55 Rotated Beam
Delta II 7925H - 10L Baseline workup
TMA-56 Optics with Gigacam. Configured for DeltaIV 4 meter fairing
Secondary Mirror
Primary Mirror
NIR Imager
CCD Imager
Tertiary Mirror
Radiators
Filter wheel
Star Trackers
Gyro
TTL Tracker
Optical and NIR spectrometers
Pickoff Assembly
Flat Folding Mirror
