Sai Krishna Reddy Akarapu Email & Phone Number

County Galway, Ireland

Galway Metropolitan Area

County Dublin, Ireland

The highlight of this position has been introducing Model-Based Systems Engineering (MBSE) approach into the Design, Development and Testing of CubeSats at University projects. This adaptation involves transitioning from traditional satellite design practices to a model-based design approach by developing system models required for analysis, trade-offs, verification and validation (V&V).Main responsibilities and experience in MBSE include:⦿ Identifying the benefits of MBSE and introducing this approach into the CubeSats development team under C-Space, UCD;⦿ Performed trade-off studies in order to decide the required MBSE tool and methodology which is suitable for needs and requirements of the project;⦿ Procurement and License Management of the MBSE tool Developed system models for CubeSat subsystem structural models and verification models in CATIA Magic System of Systems Architect tool based on EIRSAT-1 architectural data;⦿ Trained remaining team in SysML and MBSE methodology and tool mechanics required in the project.⦿ Creating additional SysML stereotypes required for CubeSat modeling.⦿ Developed CubeSat standard structural model based on the MDD, DDF and Requirement documents of EIRSAT-1;⦿ Model Based Requirements and Test Configuration Development from EIRSAT-1 textual requirements;⦿ Major contribution is modeling the Command and Data Handling Subsystem of the EIRSAT-1 and its communication with Ground Segment.⦿ Created Test models for end-to-end communications testing for EIRSAT-1; ⦿ Performed requirements verification through MBSE approach by defining a VerifyMethod property for Requirements with appropriate values;⦿ Developed an plugin to integrate SysML test models with python test scripts to enable a closed loop test data verification;

County Dublin, Ireland

Main responsibilities and experience in EIRSAT-1 Ground Segment include:⦿ Setting up the Ground Segment Monitoring System to run as expected and display the readings on Grafana server.⦿ Preparing Test Specification and Test Procedures (TSTP) according to FYS documentation standards;⦿ Performed end-to-end communications testing on the EQM and FM of EIRSAT-1. Analyzed the test results and prepared Ground Segment Test Reports (TR) as part of Phase D1/D2 completion;⦿ Link Budget analysis of communication link between EIRSAT-1 and Ground Segment at UCD.⦿ Re-modeling the existing GNU Radio uplink/downlink flowcharts suitable for various test scenarios.⦿ Validated the TT&C chain between the Ground segment and the satellite.⦿ Been a Product Assurance (PA) Engineer during Functional and Mission Test campaigns, especially that are related to Communication and Data Handling Subsystem (CDHS) and Ground;⦿ Been a Test Support Engineer (TSE) during Environmental Test Campaign (ETC) for Flight Model (FM) of EIRSAT-1 at ESA-Redu Services, Belgium;⦿ Test lead for the following ground segment related tests: ⦿ Ground-based Source-Reception test ⦿ Performed several downlinks through Satnogs network using the GS antennas. ⦿ Performed APRS testing by beaconing the location of GS at 144.8 MHz

Dublin, County Dublin, Ireland

⦿ Responsible for design and development of Ground Segment Monitoring System for Ireland's first research satellite EIRSAT-1.⦿ The key idea of this project was to monitor the uplink RF power from ICOM-9100 used on the Ground segment side and push it into the Grafana for visualisation.⦿ The data is extracted from the RF sensors and weather station, and is ingested into AWS Timetream DataBase using AWS IoT Core tool. The data is then pushed to Grafana for monitoring.⦿ During this internship, I also had got an opportunity to interact with actual Engineering Qualification Model of EIRSAT-1 satellite during subsystem's functional testing in a Product Assurance Engineer role.

Dublin, County Dublin, Ireland

⦿ Responsible for systems engineering in satellite subsystems project Ultrasat, a High Altitude Weather Balloon Satellite. ⦿ Developed Breadboard Model and Flight Model as part of the mission and successfully delivered complete verification and validation standards required for the mission.⦿ As a crucial part of the mission, I have successfully developed a modified crossed dipole antenna to operate at 868 MHz LoRa band for transmitting the telemetry packets from the satellite at a height of ~30km to the receiving ground station on Earth.

Chennai, Tamil Nadu, India

• Responsible for assisting undergraduate students with experiments at the Electrical Machines lab and Electromagnetic Field Computation lab; grading the lab reports• Handling Electromagnetic Field module classes for undergrad electrical engineering students.

Msc. Research, Space Science

After joining the EIRSAT-1 team as an intern to work on Ground Segment, I got the opportunity to continue my work through this Research.

Master Of Science - Ms, Space Science And Technology

Modules: The Space Environment, Applications of Space Science, Space Mission Design, Space Sector Professional Skills, Space Detector Lab.

Master Of Engineering - Meng, High Voltage Engineering

Relevant Modules: Insulation Technology, Electromagnetic Field Computation and Modelling, High Voltage Generation and Measurement, High.

Bachelor Of Technology (B.Tech.), Electrical And Electronics Engineering

Relevant Modules: Linear Control System, Electric Circuit Analysis, Electrical Machines, Electromagnetic Theory, Analog and Digital.