Unmanned aerial vehicles (UAVs) are replacing many traditional methods ranging from simple play toys to critical defense operations. UAVs or drones that are the little flying machines are used in space, defense, food delivery, pest sprays for agriculture, consumer goods delivery, land-surveillance and the list goes on. However, the physics behind it demands a lesser weight for drone to fly high as lesser the weight, lesser is the power required to operate. In all the components that make up a drone, is the frame that is most important structure which holds and bears everything at place. So the material used for the drone frame plays a very crucial role for it should have a lesser mass but sufficient strength. In this work, frame is modeled taking into consideration, its sturdiness and stress analysis is conducted using Autodesk Fusion 360 software and compared for different materials of frames from plastics to metals and the design is shape optimized to meet the objective

Consequence modeling of ethyl acetate 40 KL aboveground storage tank was carried out under different scenarios. The toxic concentration of ethyl acetate beyond IDLH (i.e. 2000 ppm) covered up to 23 meters from the release source when there was a leak that occurred 2 inches from the bottom of the tank. The flammable vapor cloud enveloped up to 13 meters from the release source when the concentration of ethyl acetate was beyond 60% of LEL (i.e.13080 ppm). The mass of the fire ball was considered as 100% in order to get the worst case scenario during BLEVE. Based on the mass of the methyl acetate the diameter and duration of the fire ball was 190 meters and 12 seconds respectively during BELVE.