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TEAM RAKSHAK

AN INTRO TO TEAM RAKSHAK

Team rakshakĀ  is the official team of IIT Bombay consisting of 40+ students from various disciplines who work collaboratively to develop a fleet of robust Unmanned Aerial Vehicles (UAVs) to support Search and Rescue Operations (SRO) in the event of a disaster. The team was formed in the year 2015 by some of the IITB enthusiasts to build drones/planes that can be used for rescue missions. These aircraft can provide relief measures in the disaster-stricken area (e.g., Landslide, Flood, Earthquake) and can be used for surveys & mapping of cities and conservation of wildlife with slight modifications.Ā Ā 

TABLE OF CONTENTS

GARUD UAV 2022-2023
SKYHAWK DRONE 2022-2023
Drone casing DESIGN
Drone Casing MANUFACTURING
Parachute manufacturing
AMPHIBIOUS PLANE R&D

Positions held

April 2022 - October 2022 : Recruit in AeroD subsystem.

October 2022 - June 2023 : Junior design engineer

June 2023Ā  Ā  Ā  - presentĀ  Ā  Ā  : Subsystem Vice Lead

GARUD UAV 2022-2023

Garud was a fixed wing UAV Team Rakshak developed for AUVSI-SUASĀ  competition. As a recruit in team rakshak, I took part in the making of the prototype for the UAV. Suggested methods and worked on wing mounting and attachment of landing gear. Post competiton, I also worked in scrapping up useful components from Garud.

Prototype fly.mp4

Prototype flight test

SKYHAWK DRONE 2022-2023

Front View
isometric view
side view
Top view

CAD MODEL MADE ON SOLIDWORKS

Drone casing DESIGN

As a junior design engineer, I have taken part in the process of designing and manufacturing a canopy for Skyhawk Quadrotor drone. we were tasked with the development of a casing for our droneĀ  to reduce drag and increase lift. This page is the summary of my work regarding that.

My work has been selected as final as it gave optimum and satisfactory results. Here is a summary of my cad model and simulation results. I have used Ansys fluent for CFD.


CFD RESULTS ( CONTOURS )

Drag Force for 15m/s
Lift force for 15m/s
Lift coefficient

PERFORMANCE RESULTS FROM CFD

Jaydeep performing hot wire cutting

Drone Casing MANUFACTURING

The main challenge was manufacturing and we had two amazing seniors, Sanjay Kareer (design head) and Gohil Jaydeep ( Manufacturing head) of AeroD subsystem. We implemented hot wire cutting techniques to shape out the thermocol to make the mould for canopy. Unfortunately we couldn't continue the manufacturing beyond that

Measurements

WhatsApp Video 2023-07-08 at 8.09.02 PM.mp4

Manufacturing process

Parachute manufacturing

The main objective of skyhawk drone was to drop 5 payloads of 500g each without much damage and with considerable accuracy. Before parachute, secured free drop was suggested, which didn't work well and violated the condition for gentle impact as proposed by competition guidelines.

7087a3e4-d208-4f66-a848-65e714ed1810.mp4
PARACHUTE DOCUMENT

AMPHIBIOUS PLANE R&D

As part of team Rakshak's R&D project, I guided the recruits for designing a water landing gear for the RC plane they build using depron sheets.
We simplified the geometry of usual amphibious landing gears and scaled it to the bouyancy needs of the RC plane. CFD simulations were also performed. After simplification, we made a cut out plan to make it out of sheets of depron.

Landing shape measurements.pdf

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