Launch Vehicle

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