CEC-ICMC 2017 - Abstracts, Timetable and Presentations

Session

C1OrD - Aerospace: JWST and Propellant Storage

C1OrD

10 Jul 2017, 16:00

Monona Terrace Community and Convention Center

Conveners

C1OrD - Aerospace: JWST and Propellant Storage

• Ian McKinley (JPL)
• Ali Hedayat (NASA / MSFC)

249. Cryogenic Testing of the Thermal Vacuum Chamber and Ground Support Equipment for the James Webb Space Telescope in Chamber A at Johnson Space Center

Michael DiPirro (NASA/Goddard Space Flight Center)

10/07/2017, 16:00

Contributed Oral Presentation

The James Webb Space Telescope (JWST) is the largest cryogenic instrument/telescope to be developed for space flight. The telescope will be passively cooled to < 50 K and the instrument package will be at 40 K with the mid-infrared instrument at 6 K. The final cryogenic test of the Optical Telescope Element (OTE) and Integrated Science Instrument Module (ISIM) as an assembly (OTE + ISIM =...

8. The Design and Testing of Large Cryogenic Space Radiators for the James Webb Space Telescope

Ryan Taylor (Ball Aerospace), Eric Marquardt (Ball Aerospace)

10/07/2017, 16:15

Contributed Oral Presentation

The James Webb Space Telescope (JWST) is a cryogenic observatory that will provide unprecedented views of our universe. The spacecraft instruments are primarily cooled via passive cryogenic radiators. Ball Aerospace was responsible for designing, building and testing three of these radiators, the Fixed ISIM Radiators (FIR), with the largest designed to dissipate nearly 0.5W at 40K with a...

416. Thermal analysis of a prototype cryogenic polarization modulator for use in a space-borne CMB polarization experiment

Dr Teruhito Iida (PTI CO., LTD.)

10/07/2017, 16:30

Contributed Oral Presentation

We report a thermal analysis of a polarization modulator for use in a space-borne cosmic microwave background (CMB) project. A measurement of the CMB polarization allows us to probe the physics of early universe and currently this is known to be the best candidate to test the cosmic inflation experimentally. One of key instruments to achieve this science is to use a polarization modulator. The...

441. Zero Boil-Off Control Methods for Large Scale Liquid Hydrogen Tanks using Integrated Refrigeration and Storage

Bill Notardonato (NASA Kennedy Space Center)

10/07/2017, 17:00

Contributed Oral Presentation

NASA has completed a series of tests at the Kennedy Space Center to demonstrate the capability of using integrated refrigeration and storage (IRAS) to remove energy from a liquid hydrogen (LH2) tank and control the state of the propellant. A primary test objective was the keeping and storing of the liquid in a zero boil-off state, so that the total heat leak entering the tank is removed by a...

280. Liquid Hydrogen Supported Foil Bearings for Launch Vehicle Propellant Densification

Mr Robert Fuller (Barber-Nichols Incorporated)

10/07/2017, 17:15

Contributed Oral Presentation

Launch vehicle propellants can be densified by an external thermodynamic vent principle operating sub-atmospheric pressure and benefits the space launch industry by reducing vehicle gross liftoff weight (1). However, this principle requires compressors to generate significant head (0.1 bara inlet to 1.1 bara discharge for hydrogen) which can either be achieved by high shaft speed or by...

390. Large Scale Production of Densified Hydrogen to the Triple Point and Below

Adam Swanger (NASA Kennedy Space Center)

10/07/2017, 17:30

Contributed Oral Presentation

Recent demonstration of advanced liquid hydrogen storage techniques using Integrated Refrigeration and Storage (IRAS) technology at NASA Kennedy Space Center led to the production of large quantities of densified liquid and slush hydrogen in a 125,000 L tank. Production of densified hydrogen was performed at three different liquid levels and LH2 temperatures were measured by twenty silicon...