1 National Aeronautics and Space Administration John H. Glenn Research Center at Lewis Field Space...

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National Aeronautics and Space AdministrationJohn H. Glenn Research Center at Lewis Field

Space Power Facility (SPF)

CEV Environmental Qualification Testing

DISCLAIMER:This Initial Government Concept does not represent a preferred Government

approach or solution.

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Space Power Facility Cutaway View

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Facility Architecture for CEV Testing

Assembly and Integration Area

Thermal/Vacuum and EMI/EMC Test Area

Random and Acoustic Vibration Test Area

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Operations Flow

* SPF Specific Schemes/Techniques Provide Low Risk Handling of Hardware

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Major Area for Facility Upgrades Vibration Test Area

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EMI/EMC Testing

All tests are performed inside the aluminum vacuum chamber using the chamber as an RF shield

Minimum facility modifications required

Facility survey was performed showing very low RF noise

Utilizes large chamber size to position EMI equipment using movable platforms

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EMI/EMC Testing

Aluminum vacuum chamber is well suited for radiated susceptibility testing, and for radiated emissions testing

Data traces shown in figure indicate that the RF energy penetrating into the chamber is below thresholds used in the International Space Station Program

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Random Vibration Testing

Large 3 axis state-of-the-art shaker system sized to test CEV full stack and LSAM (LSAM mass 120,000 lbs)

7 shaker system allows for ease of changeover to vertical axis testing

4 – 45,000 lb horizontal 3 – 65,000 lb vertical

New data acquisition and control system

450 channel data acquisition system will be used for both random and acoustic vibration testing

1.4 million lb seismic mass installed in high bay

Shaker slip table below grade allows for full stack testing

Facility can be modified to handle tanks filled with isopropyl alcohol

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Acoustic Vibration TestingChamber Characteristics

Build a new 80,000 ft3 (40ft x 45ft x 46 ft tall) RATF with capability of 163 dB in the empty chamber

The design of this chamber utilizes known state-of-the-art technology for acoustic testing at these levels and is considered the most powerful chamber that can be built of this size

Chamber size is large enough to test the integrated SA/SM/CM/LAS boost cover and the LAS tower as a separate test

Chamber size and chamber access doors are large enough to allow testing of the LSAM Typical 60,000 ft3 Reverberant Acoustic Test Facility

GRC Utilized Wyle Laboratories for proposal information (worlds leading expert in building acoustic facilities)

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Thermal Vacuum Testing

Solar Simulation Build test specific lamp

structure

Full surround lamp structure with movable sections to allow deployments

Existing Power Supply/Controllers

14 zones (7.2 MW) Maximum 400 kW/zone. SCR control

Existing chamber penetrations utilized

Cryogenic Systems

Reconfigure existing shroud panels to 40 foot tall x 40 wide x 80 ft long envelope

Cryopanel end walls will swing open to allow test article insertion

Assembly platform with attached cryofloor will be used for build-up of test article in Assembly Area and allow integrated unit to be moved to test chamber on rail system

Orion Cryoshroud Concept with Doors Closed

ISS Testing Cryoshroud Configuration

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Thermal Shroud System Designed for LSAM Testing

CEV Testing Deployable Structures LSAM Testing in Lunar Surface Configuration

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Existing Cryogenic Systems

SPF LN2 & GN2 Distribution Systems

– 28 K GAL LN2 STORAGE (60 PSI SUPPLY)– 200 K LN2 TANK LOW PRESSURE STORAGE– ELECTRIC LN2 VAPORIZER FOR GN2– GN2 STORAGE ~ 70,000 SCF @ 2600 PSI– CRYOSHROUD GN2 RECIRCULATION COOLED WITH LN2

DESUPERHEATER

– LN2 SUPPLY FOR CRYOSHROUD AND DIFFUSION PUMP BAFFLES AND TEST SPECIFIC HARDWARE

– 11,000 CFM COMPRESSORS CIRCULATE GN2 THRU CRYOSHROUD

Capable of removing up to 14 MW of heat

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Infrared Lamp System

INFRARED HEAT LAMP SYSTEM

DESIGN CHARACTERISTICS

USES TUNGSTEN QUARTZ LAMPS

AUTOMATIC HEAT FLUX CONTROL

CLOSED LOOP TEMP CONTROL

VARIABLE TEMPERATURE RANGE

INDEPENDENT CONTROLLED BANKS

7 MW POWER AVAILABLE INSIDE CHAMBER

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Ancillary Facility Support Systems

General Maintenance and certification is in progress for the following systems

Chamber door and bridge systems

8000 GPM closed system cooling tower

Gaseous nitrogen system

Facility service air system - 110 psig

Electrical substation - 14 MW available

Emergency power generator

Facility Lifting Devices

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