ENVIRONMENTAL

TEST FACILITIES

ISITE

Presented By

Facilities Group, ISAC ISRO Satellite Centre,

Bangalore

CATVAC

Thermo vacuum Facility

CATVAC, ETF-1, ISITE

CATVAC, ETF-1, ISITE CATVAC, Chamber Internal View

CATVAC, ETF-1, ISITE Satellite Loading - CATVAC

INTEGRATED SATELLITE LEVEL TESTS

Thermal vacuum performance test

APPENDAGE LEVEL TESTS

Thermal cycling tests on large appendage under

high /low vacuum conditions

Thermo Elastic Deformation Measurement s (TED

Test )

CHAMBER SUBSYSTEM

Chamber inner diameter : 6.5m

Chamber length : 10m

Chamber longitudinal axis : horizontal

Material of construction : SS-304L

CATVAC, ETF-1, ISITE CATVAC – Chamber Configuration

Three modes of space craft loading arrangements in to the

Chamber

• On Chamber Front dish

• On chamber shell Rail using an L Adaptor

• On Mono rail hoist

• Note: In the first two modes of Space craft loading

test object tilt and rotation arrangement has been

provided

Test Object Mass : 3000Kg Max

Test Object Dimension : 3 m x 3m X 6m ; Cuboid

Crane Hook Height from GL : 12,600 mm

CATVAC, ETF-1, ISITE Spacecraft Loading & Unloading

CATVAC, ETF-1, ISITE Satellite Mounted on Front Dish

VACUUM LEVEL: 5X10-6 mBar or better with the Test object inside

Two Numbers of roughing skids

• Total pumping speed : 10000 CMH

Three Numbers Turbo Molecular Pumps

• Pumping speed : 2000 X 3 Ltrs / Sec

Four Number of Multi headed Cryo pumps

• Pumping speed : 60000 X 4 Ltrs / Sec

Meissner trap/water vapour panel

• Panel area : 5 square metres

Scavenger panel

• Area : 1 square mtr

Independent inter seal vacuum pumps for the Chamber Dish

CATVAC, ETF-1, ISITE Vacuum System Configuration

SHROUD

• 14 nos. of sub zone shroud panels with independent

stand alone Thermal Conditioning Units (TCU)

• Type of shroud : Blistered type embossed panel

• Material : AISI 304L

COOLANT TYPE

• GN2/LN2

• LN2 / GN2 feed system from storage tanks

• Closed loop circulation of coolant through thermal

shrouds with TCU

OPERATING TEMPRATURE RANGE

• 100K to 373K with an accuracy of +/- 1 K

HEAT LOAD CAPACITY

• 10 KW per sub zone

CATVAC, ETF-1, ISITE Thermal Subsystem Configuration

LN2/GN2 storage, distribution and supply

Vertical Liquid Nitrogen storage tanks : 4 No's

• Storage capacity : 1,25,000 Litres each

• Working Pressure : 5 Bar

Gaseous nitrogen storage tank :1 No

• Storage capacity :10,000 Litres

• Working Pressure : 5 Bar

CATVAC, ETF-1, ISITE Auxiliary Subsystem

5A/20AWG : 350 Nos. (7X50)

2A/20AWG : 350 Nos. (7X50)

10A/12AWG : 60 Nos. (6X10)

1553B Bus Interface : 4 Nos

Thermal - IR Cage : Power supplies : 128 Nos ; 60V/12 Amps

Thermo couples for test object Temp. Monitoring : 448 Nos

C / Ku / Ka Wave Guide Interfaces : On size ISO 320 ports on

Front Dish and Chamber body

RF connector / Cable interfaces for C, Ku and Ka band on size

ISO250/320 chamber Ports

CATVAC, ETF-1, ISITE Chamber – Power / Signal/ RF/

Thermal Interface

For Control , Measurement and status monitoring of

• Chamber system

• Chamber thermal system

• Chamber vacuum system

• Chamber auxiliary system

ICMS CONTROL PHILOSPHY : Distinct three levels of control

for Facility Reliability

• From Computer Work station / operator Consoles

• From Engineering work Station with MIMICS

• PLC Local control using HMI panel with Plant MIMICS

CATVAC, ETF-1, ISITE Integrated Control & Monitoring

Systems(ICMS)

ICMS CONFIGURATION

• PLCs in Hot Redundant Mode

• SCADA Servers with hot redundancy

• Six No . Work stations for Facility Control / Operator

Interface

• Two No. Engineering Workstations for ICMS PLC Status

monitoring and control

• RAID based Facility data storage with storage capacity

up to 100GB

CATVAC, ETF-1, ISITE Integrated Control & Monitoring

Systems(ICMS)

Vibration Test Facility

AVTF, ETF-1, ISITE

AVTF, ETF-1, ISITE Vibration Test Facility

Maximum Force Rating of Shaker : 29Tons

Shaker Load Bearing Platform: Dia : 2.5m

ST / HE Interfaces : M12 @ 16”, 22”, 28”, 900 mm, 1194 mm,

1700 mm PCD

Maximum Vertical Payload static Capacity : 8,000 kg with LBP

Useful Frequency Range : 5 Hz – 2000 Hz

Maximum Displacement : 50 mm

Maximum Velocity : 2.0 m/s

Maximum offset load Capacity : 40kNm (With LBP)

Maximum slip table Moments : Pitch - 675kNm; Roll - 700kNm;

Yaw - 190kNm

S/C Handling Crane - EOT : 10Ton

Maximum Crane Hook Height from GL : 12.6 M

AVTF, ETF-1, ISITE Shaker System

AVTF, ETF-1, ISITE 29-Ton Shaker System

AVTF, ETF-1, ISITE 2.5M Head Expander

Maximum Number of Control Input channels : 48 No’s

Typical no. of Control Inputs : 1 No

Control Methodology : Single, Multiple : Avg., Max, Min.

Minimum Test level supported : 0.05g @ 100mV/g

Test types supported : Random, Swept Sine

Payload safety : Loop check prior to test

Limiting and Abort Channels : 47 Channels

Export of Data : UFF, Matlab ASCII & JPEG

AVTF, ETF-1, ISITE Vibration Control System

Data Acquisition

• Max number of Input channels : 264

• Sensor types supported : Voltage, IEPE

• Analysis Frequency Range : 20 kHz.

• Max. Sampling frequency : 102.4 kHz.

Data Analysis

Sine

Peak Response : Fundamental and BBRMS,

H(f) : Transmissibility & Phase w.r.t. Single and Multiple Reference

Frequency Estimate : COLA

Random

Averaging : Linear, Exponential, Overlapping

H(f) : Transmissibility and Phase

Power Spectral Density

Time Domain : Waveform analysis, FFT, Auto PSD

AVTF, ETF-1, ISITE Data Acquisition and Analysis System

Charge

Input type : PE & ICP

No of Channels : 48

IEPE

Input type : ICP

No of Channels : 160

Strain

Strain configuration : ¼, ½ and Full bridge

No of Channels : 20

Programmable Low Pass Filters

No. of Channels : 16

Frequency range for LPF : 10 Hz to 66.7 kHz

AVTF, ETF-1, ISITE Instrumentation

Acoustic Test Facility

AVTF, ETF-1, ISITE

AVTF, ETF-1, ISITE Acoustic Test Facility

Volume : 1500 m3

RC DimensionS : 11.3 m (L) X 9.0 m (W) X 14.3 m (H)

Max. Overall Sound Pressure Level (OASPL) : 156 dB

Payload / Spacecraft Entry - RC Main Door : 7.0 m(W) X 14.3 m(H)

Medium used for Noise Generation : Gaseous Nitrogen

Modulators : 6 No's

Horns – Exponential : 25 Hz - 1 No; 50 Hz - 1 No; 80 Hz - 2 No’s;

160 Hz – 1 No

Jet Noise source : 1 No

Safety: Oxygen Monitoring Sensors – Four nos. inside RC and Two

nos. in the enclosure Chamber

AVTF, ETF-1, ISITE Reverberation Chamber

Cleanliness : 1,00,000 Class

Dimension : 17.25 m (L) x 10.9 m (W) x 14.3 m (H)

Spacecraft Entry :

• Vertical Door : 8 m (W) x 10 m (H)

Crane Capacity : 20 Ton

Crane Hook Height from GL : 13,600 mm

Emergency Exit : 1 No

Fuel Loading / Unloading : Water and other Auxiliary

utilities support provided

Movement of S/C into Preparation area : Winched haul

support for the container movement

Spacecraft Trolley Load Capacity : 7 Ton

Trolley Interface PCD : 900mm, 1194mm, 1700mm

AVTF, ETF-1, ISITE Spacecraft Preparation Area

Control System : Closed Loop Digital Control

Controllable Frequency Range

• Modulators: 20 Hz – 1250 Hz

• Jet Noise Source: 1250 Hz – 8000 Hz

Max. No. of Microphone Input Channels : 16

Sensor Type Supported : Voltage, IEPE

AVTF, ETF-1, ISITE Acoustic Control System

Signal Conditioners :

• Charge : 32 Channels (PE & ICP)

• IEPE : 160 Channels (ICP)

• Strain : 10 Channels (¼, ½ & full bridge)

Data Acquisition :

• No. of Input Channels : 192

• Sensor Types Supported : Voltage, IEPE

Data Analysis :

• Sine, Random, Modal

Export of Data : UFF

AVTF, ETF-1, ISITE Instrumentation and DAS

Thank You