calcutta remember scene aamir khan movie three idiots rancho farhan raju stumble upon suicide fellow classmate joy lobo operating unmanned vehicle spycam built part design work dictatorial manager imperial college applied science repulse joy desperation death refusing allow commencement exercise degree recent dispatch project student engineering college howrah join forces plan design build unmanned aerial vehicle uav pressures deal eleven scholarly person mckv institute technology demonstrated uav maidan saturday solar machine fly long hours day well night television camera rise top zoom capture images said shramona chakraborty computer skill engineering student along classmates debojyoti dey ahiry ghosal subham saha saptarshi chakraborty suvomoy pal mechanical engineering students sumanta laha diptajit sadhukhan preetam das avijit poddar arpan pradhan debdeep chatterjee student suman chandra built rs uav semester integration solar energy modern aircraft technology topic interest received lot attention researchers past couple decades many potential applications technology include continuous flight purposes information electrical relay surveillance supervise used vindication find enemy aircraft ships said suvanjan bhattacharyya assistant professor mechanical organise department guided students us army using drones launch missile strikes militant den afghanistan pakistan students conceive commercial version prototype use dropping relief supplies areas carrying civil mining surveys remote locations material used aircraft balsa wood aircraft flown using five motors propeller blade incorporation radar planned detect transmit location metal objects control send international agencies around world embraced drones drone development programmes indicates uavs outgrowing tactical niche within strategic framework counterterrorism operations becoming regular tactical equipment modern militaries students mckv kept global development mind designing project said k k kejriwal managing trustee institute