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© Copyright 2002 ABB Bomem Inc. All rights reserved. Page 1 MARVEL Meeting JPL, UoT, ABB Quebec City (Canada) February 6, 2003 CAUTION: COMPETITION SENSITIVE.

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Presentation on theme: "© Copyright 2002 ABB Bomem Inc. All rights reserved. Page 1 MARVEL Meeting JPL, UoT, ABB Quebec City (Canada) February 6, 2003 CAUTION: COMPETITION SENSITIVE."— Presentation transcript:

1 © Copyright 2002 ABB Bomem Inc. All rights reserved. Page 1 MARVEL Meeting JPL, UoT, ABB Quebec City (Canada) February 6, 2003 CAUTION: COMPETITION SENSITIVE MATERIAL THE INFORMATION CONTAINED HEREIN IS PROPRIETARY TO AND CONSIDERED A TRADE SECRET OF “ABB BOMEM INC.” AND SHALL NOT BE REPRODUCED, IN WHOLE OR PART, WITHOUT THE WRITTEN AUTHORIZATION OF “ABB BOMEM INC.” Mars Scouts

2 © Copyright 2002 ABB Bomem Inc. Page 2 Overview of Presentation Section 0: Introduction Section 1: Overview of ACE heritage Section 2: Interferometer sub-system proposed to JPL for MARVEL Section 0) Introduction Mars Scouts

3 © Copyright 2002 ABB Bomem Inc. Page 3 Heritage from ACE: Background Information ACE-FTS development started early 1999 (Phase B contract award) under CSA’s Space Science program. Prime contractor is ABB Inc., main sub- contractors are Ball Aerospace and EMS Technologies. Over 150 persons have contributed to the ACE-FTS development. The instrument design is based on the classical Michelson interferometer with an optimised double-pass optical layout. The instrument also includes two 128x128 imagers and an active suntracker. ACE-FTS is a relatively complex instrument: more than 50 optical components, 3 mechanisms, severe mass/power limitations, cryogenically-cooled IR detectors... ACE-FTS was delivered to the Canadian Space Agency September 18 th, 2002 Section 1) Overview of ACE heritage

4 © Copyright 2002 ABB Bomem Inc. Page 4 Instrument Electronics (EBOX) Sub-System IR Detector/Cooler Sub-System Input Optics and VIS/NIR Imager Sub-Systems Interferometer Sub-System Instrument Structure Sub-System ACE-FTS Instrument Architecture Section 1) Overview of ACE heritage

5 © Copyright 2002 ABB Bomem Inc. Page 5 The ACE-FTS Instrument Interferometer-side Input Optics-side Section 1) Overview of ACE heritage

6 © Copyright 2002 ABB Bomem Inc. Page 6 ACE-FTS: 3-days before its delivery Section 1) Overview of ACE heritage

7 © Copyright 2002 ABB Bomem Inc. Page 7 Key Requirements Section 1) Overview of ACE heritage

8 © Copyright 2002 ABB Bomem Inc. Page 8 ACE-FTS Instrument Optical Layout Section 1) Overview of ACE heritage

9 © Copyright 2002 ABB Bomem Inc. Page 9 Structural Design The instrument FEA has more than 140,000 elements Structural design of such an instrument is paramount for vibration qualification Thousands of hours were needed for the detailed structural analyses Design of interferometer rotary arm flexures and retro-reflector mounting VERY critical. Excellent correlation between FEA and tests ACE-FTS was qualified under vibrations both at instrument-level and spacecraft-level Significant vibration over-test at instrument-level even if FLV was used Section 1) Overview of ACE heritage

10 © Copyright 2002 ABB Bomem Inc. Page 10 Vibration qualification successfully completed Section 1) Overview of ACE heritage

11 © Copyright 2002 ABB Bomem Inc. Page 11 Vibration qualification: Instrument vs S/C-levels X Direction Grms Ratio (FTS/Spacecraft) = 12 Y Direction Grms Ratio (FTS/Spacecraft) = 5 Z Direction Grms Ratio (FTS/Spacecraft) = 15 X-axis Section 1) Overview of ACE heritage

12 © Copyright 2002 ABB Bomem Inc. Page 12 Thermal Design Section 1) Overview of ACE heritage

13 © Copyright 2002 ABB Bomem Inc. Page 13 FTS TVAC testing at ABB-Bomem Section 1) Overview of ACE heritage

14 © Copyright 2002 ABB Bomem Inc. Page 14 Overview of Test Results SNR requirement is met (>100) for most of the critical spectral bands ILS/spectral resolution: 0.026 cm -1 (requirement < 0.028 cm -1 ) Modulation efficiency: measured 80 to 99 % (requirement > 70%) Mass: 40.76 kg (requirement < 40 kg) Power in science mode: 37 Watts (requirement < 40 Watts) Rotary arm velocity control better than 0.05% RMS (requirement < 1%) Laser metrology SNR: 55 dB (> 50 dB) Imager co-registration requirements met Instrument pointing stability: 3 μrad (requirement < 15 μrad ) Instrument pointing knowledge: 5 μrad (requirement < 15 μrad ) TVAC qualified: stable performance at cold/nominal/hot cases Vibration qualified, no visual damage, various optical alignments maintained Section 1) Overview of ACE heritage

15 © Copyright 2002 ABB Bomem Inc. Page 15 InSb Measurement (window around 1900 cm -1 ) 3200K 1500K 1250K Section 1) Overview of ACE heritage

16 © Copyright 2002 ABB Bomem Inc. Page 16 Flight Model Spectra High-Resolution CO lines Section 1) Overview of ACE heritage

17 © Copyright 2002 ABB Bomem Inc. Page 17 Comparison with MolSpec Database (CO 2 ) Simulations with MolSpec Database ACE-FTS Flight Model Measurement with InSb Detector Section 1) Overview of ACE heritage

18 © Copyright 2002 ABB Bomem Inc. Page 18 SciSat-1: 4 months before launch SciSat-1/ACE spacecraft Test results are showing promising instrument performance. ACE-FTS is the fastest-developed and lower-cost space-based FTS ever built ! Two additional ACE-based instruments are being built (ground version + balloon- borne unit). SciSat-1 launch scheduled 2 nd Quarter 2003. Section 1) Overview of ACE heritage

19 © Copyright 2002 ABB Bomem Inc. Page 19 Section 2) Interferometer sub-system proposed to JPL

20 © Copyright 2002 ABB Bomem Inc. Page 20 Interferometer Sub-System Characteristics OPD: +/- 25 cm (for 0.02 cm -1 spectral resolution), 4 resolution settings Sweeping velocity: 25 cm/sec Metrology wavelength: solid state laser 1550 nm Metrology SNR: 55 dB Optical transmission: 2-14  m + 1550 nm Aperture: 20 mm diameter, divergence up to 6.25 mrad Mass: 7.41 kg Electrical Power: 4.7 Watts Volume: 5.2 x 10.8 x 16.5 inches Includes locking mechanism for launch Tested and qualified up to 25 G RMS (measured by accelerometer mounted on rotary arm mechanism) Section 2) Interferometer sub-system proposed to JPL

21 © Copyright 2002 ABB Bomem Inc. Page 21 Optical & Electrical Interfaces Section 2) Interferometer sub-system proposed to JPL Input Optics Sub-system Detector/ Cooler Sub- system Instrument Electronics Sub-system JPL or ABB JPLABBJPL All optical interfaces with collimated beams for robustness

22 © Copyright 2002 ABB Bomem Inc. Page 22 Mechanical Interfaces Section 2) Interferometer sub-system proposed to JPL 16.5” 10.8” 5.2”

23 © Copyright 2002 ABB Bomem Inc. Page 23 Interferometer Sub-System Architecture Section 2) Interferometer sub-system proposed to JPL Rotary arm module Rotary arm Voice Coil Corner-Cubes Pin-puller (locking mechanism) etc… Beamsplitter/compensator module Beamsplitter Compensator Beamsplitter Wall Compensator Cell etc... Laser source module Laser launcher Temperature and Current Control Boards etc… Metrology detection module Laser detection board Filter etc… End-mirror module End-mirror End-mirror Wall etc...

24 © Copyright 2002 ABB Bomem Inc. Page 24 ACE-FTS Interferometer Sub-System Beamsplitter and Compensator Cube Corner Rotary Arm Voice-Coil Actuator Invar Mount Titanium Cell Retardation Waveplate Laser Source Side #1 Laser Source Side #2 End Mirror Wall Invar Cell End Mirror Metrology Interface Metrology Detection MPD/ZPD Opto- Switches Pin-Puller MPD/ZPD Encoder Beamsplitter Wall Section 2) Interferometer sub-system proposed to JPL

25 © Copyright 2002 ABB Bomem Inc. Page 25 Laser Diode Space Qualification Mitsubishi 1550 nm Mitsubishi Part ML976H11F Commercial part DFB laser diode at 6 mW optical power Already used for ACE laser source and for other ABB Bomem Space Programs Up-screening with TANDEX Up-screening to SSQ2001 NASA norm (JAN TXV qualification) Repackaging possible if required Risk Mitigation Tests Characterisation and environmental tests were successfully performed BOM-ACE-0179 Technical Note: Impacts of 1550 nm laser diode wavelength Section 2) Interferometer sub-system proposed to JPL

26 © Copyright 2002 ABB Bomem Inc. Page 26 Option: interferometer + servo electronics Section 2) Interferometer sub-system proposed to JPL

27 © Copyright 2002 ABB Bomem Inc. Page 27 Qualification for Mars flight Vibration qualification: tested 5 to 15 times higher than planned SciSat-1 launch (Pegasus XL) EEE: pin diodes (available JANS), opto-switches (available JANS) laser diodes 1550 nm (ACE are JANTXV upgradable to JANS as CrIS program). Radiation tests were successfully performed on laser diodes (over 10 kRADs for ACE, and will be tested up to 30 kRADs for CrIS/NPOESS) Voice-coil would require new supplier (would propose Moog or Aeroflex) Pin-puller fully space-qualified by StarSys Research (Boulder) All interferometer electronics parts (laser drivers, metrology detection) available either Class S/B or QML V/Q. All servo control (option) electronic parts upgradable to “S” level. Section 2) Interferometer sub-system proposed to JPL

28 © Copyright 2002 ABB Bomem Inc. Page 28 Other considerations - Costs - Schedule - Procurement scenarios (direct contract or potential CSA contribution) - Inputs for phase A - etc. Section 2) Interferometer sub-system proposed to JPL Interferometer Sub-System Servo electronics board

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