Subsystems | Team Antariksh

Attitude Determination & Control System
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Attitude Determination & Control Systems

About

Attitude Determination and Control system or simply ADCS stabilizes the satellite, orients it in desired directions and senses the orientation relative to the reference or inertial points. It is required to determine the position of the satellite in space with respect to an inertial reference frame, to determine the attitude of the body frame of the satellite with respect to orbit frame and to bring the satellite into earth pointing orientation after ejection and to maintain this attitude within given bounds throughout the period of operation.
RVSAT ADCS consists of a 3-axis magnetorquer control system, one sun-sensor on each face of the satellite(6 in total), an Inertial Measurement Unit (IMU), a GPS and related algorithms.
Electronics & Control Logic
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Electronics & Control Logic

About

The Electronics & Control Logic, or ECL includes the necessary memory to store the information received from various subystems and from the RVSAT Ground Station. It processes the incoming data from the on-board experiment, as well as controls the power supply unit and store the data received from the ground statios once the communication link has been established. ECL must also carry out those tasks connected with its own operation, such as memory management. It is going to handle an operating sequence for the various functions of the satellite in orbit. This sequence orders tasks on the basis of orbital time/position and also orders the execution of select tasks during the response to certain contingencies. The design of the ECL is based on achieving this operating sequence with the maximum efficiency and minimum risk.
Electrical Power Subsystem
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Electrical Power Subsystem

About

For the normal functioning of the nanosatellite, electric power is an important ingredient. Every subsystem of the nanosatellite requires electric power to perform its function properly. The Electrical Power System (EPS) generates and provides the required power. The EPS can be mainly categorized into three parts, namely:-Power Generation, Storage and Distribution.
Payload
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Payload

About

Payload is the heart of the satellite that serves the purpose of the space mission. Technically, payload is the combination of hardware and the software that interacts with the subjects to accomplish the mission objectives. The payload here concentrates on how the bacterial growth and hence the modification in metabolism happens when it is subjected to space conditions. This test derives results about whether a particular strain of bacteria behaves ideally i.e. as required /normally or is there a change in the behaviour and if that change is adverse or not. The analysis of microbial growth on microgravity serves as a stepping stone to get in-home results for the upcoming manned missions.
Strucutre & Material Design
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Structure & Material Design

About

The subsystem of Structure & Material Design deals with housing of the components which are responsible for the proper functioning of the nanosatellite which will be built by Team Antariksh. The components will be both internal and external components from various subsystems RVSAT-1. Other equally important function of the structure of the nano satellite is providing a proper stability for all the components which are exposed to harsh environmental conditions in space as well as the conditions in the launch vehicle. The structure has to withstand the environmental variations as long as the flight duration exists. The type of environment in the space during the mission operation frequent temperatures. This causes a continuous cycle of hot and cold temperature inducing fatigue of the structure due to thermal stresses.
Telemetry, Tracking & Command
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Telemetry, Tracking & Command

About

Telemetry, Tracking and Command is a subsystem which provides a link between the satellite and the ground station. Telemetry involves wireless transmission of housekeeping data from the satellite which includes data from all the subsystems. Tracking is the process of overseeing the position and attitude of the satellite with respect to ground station to ensure the satellite is in its proposed orbit. This is done so that data can be transmitted optimally in the form of commands whenever the satellite is in the ground station's field of view. Commanding is done to instruct the satellite regarding the operation to be done after losing the line of sight and to get information about the health status of satellite and its subsystem. It also helps the satellite to recover from the technical faults and soft errors found in subsystems if any. The main purpose of Telemetry, tracking and command in RVSAT-1 is to retrieve instrument sensors data and ensure effective transmission between the nanosatellite and the ground station. At the ground station we mainly relay commands and data from the nanosatellite.
Thermal Systems
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Thermal Systems

About

The responsibility of the Thermal Systems (TS) is to keep all the RVSAT-1 component systems(especially the payload and batteries) within acceptable temperature ranges during all mission phases as this is essential to guarantee the optimum performance and success of the mission because if a compo- nent is subjected to temperatures which are too high or too low, it could be damaged or its performance could be severely affected .There is a defined temperature range for all spacecraft components that must be met for optimal function. It can be achieved in two ways- a) Active thermal control defines any method of thermal management which requires energy input to function like micro-heaters, peltiers, louvers etc. b) Passive thermal control defines any method of thermal management which does not require an energy input to function like multilayer insulation, optical coatings, emissivity tapes etc.

Attitude Determination & Control System

Attitude Determination & Control Systems

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Electronics & Control Logic

Electronics & Control Logic

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Electrical Power Subsystem

Electrical Power Subsystem

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Payload

Payload

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Strucutre & Material Design

Structure & Material Design

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Telemetry, Tracking & Command

Telemetry, Tracking & Command

About

Thermal Systems

Thermal Systems

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