How to design and develop a longer flight time for quadcopter

Hi everyone.Could you help me to give any advices or ideas in order to start my final year project.As i mentioned above, i have to design and develop a drone/copter that can last for 60 minutes flight time and can speed up to 25 km/h. TQ n have a nice day.

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  • Hi. You need low speed motor and large props. Using LiIon batteries rather than LiPo can help, if you can keep the max current draw below cells limit. Remove every gram, everywhere, and maybe you can start by looking what has been done before:
    http://diydrones.com/m/blogpost?id=705844%3ABlogPost%3A1373215
    • Thank you very much :)
      Very helpful.
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