How to make a 5 kg war bot for Robo sumo( part 1) .....

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 If you are want to make a 5 kg sumo robot for Robo war then you must have to follow some theory. I am telling you the right theory behind those bot's, and with out this theory you are not able to understand that how much power and torque will required to operate your bot. 1. Circumferential Velocity Calculation: If you are think that at first you chose the motor and then you will find wheels for your Bot, then my friend your idea is totally wrong. At first chose your  Bot's wheel then calculate the circumferential velocity. Now, usually in most of cases we are using 2 or 3 inch wheel for our 5 kg war bot. Consider 3 inch wheel and we will get the Circumference is 0.235 metre. Remember this one you have to convert those units in SI. And suppose consider your motor's RPM is 300. Now, Circumferential Velocity of your bot is Vs= (π * D *N)/60 ;        (π * D) is  Circumference of wheel                                                                               =(0.235*300)/

FGFA:India's Fifth Generation Fighter Aircraft

The FGFA or PMP (Perspective Multi-role Fighter) project will jointly developed by Sukhoi and HAL, the designed is based on the Russian Sukhoi Su-57 equipped for the Indian Air force.
FGFA is a stealth Multirole and Superiority fighter, which is directly competitive with F-22 Raptor and Erofighter Typhoon. The Indian Su-57 or FGFA comes with 43 improvements over Su-57,equipped with Advance sensors, Networking and Combat Avionics.The Indian version would be also a two-seater with pilot and weapon system operator.
It's assumed that the specifications like length, Wingspan, Height, are same as the Su-57. The maximum weight carrying capacity up to 35,000 kg. This Fighter will equipped with 2 AL-41F1 afterburning turbojet Engine, Which will able to generates 93.1 KN thrust each and 147 KN thrust with afterburner. That massive thrust helps to reach maximum speed of 2,120 km/h or Mach 2. The operational range of this fighter would be 3,500 km at subsonic speed and 1,500 km at supersonic speed.It's Thrust/weight ratio is around 1.02. It's also equipped with a 1x30 mm internal cannon.
But in October 2019, the Indian chief of Air Staff RKS Bhaduria stated that the country will not be importing stealth fighters, and will instead focus on indigenous efforts like HAL AMCA. 
    

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