Isac Overview

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    ISAC - OVERVIEWRevision-14 2009

    - M.V.Kannan

    - Rajendrasingh P Byali

    - -Santosh Hebbar

    Projects Division, PPEG

    INTRODUCTION:

    The presentation on overview - ISAC under IITP technical module is intended to give

    an overall perspective of ISRO satellite centre to young and aspirant engineers who have

    joined ISRO. It also intends to specifically expose engineers to various technical areas in

    satellite domain, technological growth and challenges in these areas. With this specific

    objective in view, this document is made covering aspects such as the evolution of ISAC,

    role of ISAC and major activities, achievements, organization structure, ongoing and

    future satellite programmes, major fabrication and test facilities, technologies realized at

    present and future requirements/technological challenges etc. In this document both

    Satellite and Spacecraft are used synonymously depending on the context.

    EVOLUTION OF ISAC

    The establishment of Thumba Equatorial Launching Station (TERLS) in 1963 and the

    Experimental Satellite Communication Earth Station (ESCES) in 1967 was the prodigious

    precursors of Space activities in the country. Activities relating to satellite technology

    started in the right earnest at Satellite SystemsDivision at Space Science & Technology Centre,

    Trivandrum in the late sixties. Later when a conscious

    decision emerged in 1972 to build the first Indian

    Satellite Aryabhata the scene shifted to Bangalore

    with the formulation of the Indian Scientific Satellite

    Project (ISSP). This move was to prove propitious

    as the cradle of electronic industry nurtured the

    activity further and the space programme structured itself in to three separate

    components namely: Launch Vehicles, Satellites and payloads and applications. The

    Indian Institute of Science campus initially housed the project activities until it moved to

    the industrial sheds at Peenya. It was here

    that a handful of engineers and technicians

    fresh from the Universities sowed the first

    seeds of satellite technology in the country.

    With practically no prior-art existing within the

    country, and with sparse infrastructure put

    together from scratch, this young team developed the first Indian Satellite ARYABHATA

    in the make-shift industrial sheds at Peenya, Bangalore. With the success of the

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    ARYABHATA mission, the fledgling space activity soon developed into a full-fledged

    programme with national priorities.

    Thus was born the ISRO Satellite Centre (ISAC) in 1976.

    In 1984 the Centre moved to the present 32 acre campus

    at Airport Road, Vimanapura in Bangalore. The main

    campus which houses the major fabrication and test

    facilities, a new 110 acre campus (ISRO Satellite

    Integration & Testing Establishment (ISITE) - established

    about three years back) about 8 KMs away on the Marathalli outer ring road is replete

    with Integration and environmental test facilities under one roof namely a large clean

    room(for S/C Assembly, Integration & testing) , a compact antenna test facility (CATF)-

    specific to communication satellites and antenna systems , a comprehensive Assembly

    and Test thermo vacuum chamber (CATVAC), a comprehensive Assembly and Test

    vibration facility (CATVIB). This facility is to enhance our throughput build of satellites, 5

    communication satellites at a time.

    ISAC is the lead centre for design, development & integration of Communication, Remote

    sensing, scientific and small satellites. The activities include research & development in

    the area of advanced state of art technologies, total management of all satellite missions,

    creation of vibrant space industry for realization of space systems, Technology transfer,

    academia interface etc. Cutting edge technologies meeting various mission requirements are

    developed in the Centre keeping ISAC in the forefront of spacecraft technology frontiers. ISAC has

    realized till now 54 satellites (Communication & Meteorology: 22, Remote sensing: 17

    and others: 15) out of which 23 satellites (Communication & Meteorology: 12, Remote

    Sensing: 10 and others: 1) in operation and providing good service for various

    applications they are intended for.

    The 51st spacecraft is the Chandrayaan-1, a completely indigenous lunar orbiter which

    has shot India into International prominence as a space fairing nation capable of

    interplanetary missions. The 52nd spacecraft is W2M, ISROs first commercial satellite

    while ANUSAT is the 53rd satellite which was built by University scholars and students of

    ANNA University, Chennai-Tamilnadu.

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    The Centre is fully equipped with state of the art facilities for fabrication and testing of

    mechanical and electronic hardware/subsystems and integrated satellite. To name afew:3 Clean Rooms (Assembly, Integration & Testing of about 5 Spacecraft at a time),

    Solar panel lab (fabrication & testing), Space Simulation Chambers, Anechoic chambers

    and EMI (Electrical/Mechanical interference) test facility, Vibration & Acoustic facility,

    Precision Mechanical & Electronics Fabrication facility, HMC (Hybrid Micro Circuits) &

    Electronics packaging facility and ISITE (AIT+CATF+CATVAC+CATVIB).

    [AIT-Assembly, Integration & Testing; CATF-Compact antenna test facility; CATVAC-

    Comprehensive Assembly & Test vacuum chamber; CATVIB- Comprehensive Assembly &

    Test vibration facility.]

    The human resources total strength of ISAC is around 2400 with 78% technical and 22%

    administrative staff. The total budget outlay of ISAC is around Rs.1500/- crores per

    year.

    ORGANISATION STRUCTURE:

    The Centre is functionally organized into six major areas [MSA, DCA, CMA, RCA, ICA,

    PSAPA] ,four programme managements offices [GEOSAT, SATNAV, IRS & Small

    Satellites] two independent groups [PPEG, CIG] and Two divisions [SAID, APD] apart

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    from divisions in other areas [Administration, Purchase, Accounts, Stores, Canteen,

    Transport]. There are three programme management teams to co-ordinate and

    implement their respective projects. The projects are organized on inter Groups /

    Divisions and inter-centre basis with identified teams participating in the developmental

    tasks at subsystem/system levels. To utilise the limited resources and simultaneously

    execute multiple projects, matrix style of organisation is adapted in the Centre.

    The Centre was re-organized on 1st March 2009 and two new areas i.e., Integration and

    Checkout Area (ICA) and Power System and Avionics Production Area (PSAPA) was

    carved out with Spacecraft Integration Group (SIG) and Spacecraft Checkout Group

    (SCG) coming under Integration and Checkout Area (ICA) and Power Systems Group

    (PSG) and Avionics Production Division (APD) coming under Power Systems and Avionics

    Production Area. Auxiliary support is provided by the Administration Group headed by

    the Controller. Each functional area is headed by Deputy Director and supported by

    Group Directors, Division Heads, and Section Heads etc. The heads of functional Areas

    and S/C programme management directly report to Director of the Centre.

    Associate Director, All the Deputy Directors, all Programme Directors, Controller, Group

    Director, PPEG and Head, P&GA form the core members of ISAC council chaired by

    Director, ISAC. The ISAC Council is the highest management forum in the CENTRE

    responsible for all policy guidelines and major strategic decisions.

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    Programme Planning & Evaluation Group (PPEG):

    The Programme Planning and Evaluation Group (PPEG) is the central coordination team

    ofISAC that provides interface between the various technical groups, the administrative

    divisions and the management and outside agencies. It is the nodal hub and nerve

    Centre in orchestrating the inter-group/inter-divisional coordination for techno

    managerial issues. It also serves as the technological secretariat to the Director of

    Centre by assisting him in the crucial tasks of resolving techno managerial issues by

    collection, retention retrieval, archival and providing data, information and feed back at

    right time, for decision making. The Group also assists in planning, coordinating,

    monitoring and evaluating the activities of the Centre. Group Director, PPEG reports to

    Director, ISAC.

    The following are the major highlights of functions of ISAC PPEG.

    Overall staff support for Technical and Managerial planning of Spacecraft

    programmes including infrastructure build-up, resources allocation &

    prioritization, monitoring & evaluating functions.

    Futuristic studies in frontier areas of Space

    Review and compilation of on-going projects

    Centre Budget Planning and Expenditure Control.

    Human Resources Development related activities

    Providing management information system

    Provide advisory support on selected administrative matters of the Centre. In

    addition ,the Group will provide special assistance to Director in specific areas

    that include general management and progress in technical areas of the

    Centre

    Appropriate interface between the