Good day to all members

We are a group of mechanical engineering students from Newcastle University International Singapore doing our Final year project on Quadrotor.

Our project requirements

  • a 3 kg Hybrid Quadrotor
  • the hybrid part is to swap between crash cage of 10 m and terrestrial drive to save 50% of the battery use
  • which is able carry additional 3kg of payload
  • maximum distance between propeller tip is 1 m
  • minimum fight time is 15 min

Do visit us at http://newcastlequadcopter.blogspot.sg/

Right about now we understand that we have to jump start our selection of parts by

1. estimating the overall weight, propeller speed and diameter

2. using power equations from Abbott equation or Bob Boucher's electric motor handbook equation

3. relate it with propeller momentum theory

4. using the propeller coefficients 

5. choosing battery that can give a flight time of 15min

So people the questions will be

a) is there other methods rather than "guessing" the propeller speed and size?

b) are there power equations you all have tried and proven correct or even trying out your own equation?

c) Which of these 2 equation on Momentum Theory about propeller is the correct one? Please explain.

thrust1.gif       (1)

equation-21.png?w=640

                                

Personally I think this project was a bit ambitious given the weight, payload and flight. We did some draft calculation and had tried using the famous xcopterCalc - Multicopter Calculator; it seem like we cannot even get it to fly.

Estimated parts

4 x motor 1.2 kg

2 x battery 1.6 kg

We like to call out to everyone and anyone there who are more experience, interested and kind in this forum to provide us with your ideas and advice.

Thank and Regards

Angus Tang

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • I fly a quadcopter professionally. This is my hobby for 3 years already. I was recently told at university to write essays on Person You Admire The Most. They are definitely brothers Jacques and Louis Bréguet who created the quadcopter, I used https://studymoose.com/free-essays/person-you-admire-the-most for an example. In general, it's cool when a university implements such modern projects. I am very happy about this. Quadrocopters are the future!
  • I am proud of the brothers Jacques and Louis Bréguet who created the quadcopter.
  • As a starting point why don't you look at existing quad copters that can carry the payload you require (3kg) and scale the weight and propeller speed and size to the one you intend to make.

    This is the way that has been recommended to me to find the horsepower of the motor required for a scaled boat.

    • Thank you for the reply, the commonly available dimension 1m propeller tips to propeller tips Quadcoptor are about at most 2kg. Those with payload of 3kg is Hex or above.

      I had expressed my concern with the lecturer, he said and I quote " if it is easily available then it will not be your FYP". :S

      Regards

      Angus

      • I see. My final year project is an autonomous boat.

        The way I calculated the approximate motor power needed for the boat was to scale the size and its motor to the size of the boat I would be using .

        My supervisor advised this method, and it worked for me. The way to go about these things is to improve upon an existing product. Don't buy it outright- but amend some of the design. 

        • Thanks for the reply solar

          Our approach is somewhat similar I think

          1. we are going to make use of propeller data from http://aerospace.illinois.edu/m-selig/props/propDB.html
          2. at static condition to determine the power absorbed by the propeller to create the thrust needed
          3. hence selection of motor

          Totally agree that looking around and amend existing product will helps.

          Thanks and regards

          Angus 

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @knightsautoteam: Hi @diyrobocars, we are Orlando's first Autonomous racing club and would love your support. We are hosting our first K…
Friday
DIY Robocars via Twitter
RT @Heavy02011: #VirtualRaceLeague: @DIYRobocars Race #14 - #ParkingLotNerds join us January 15th for #AutonomousRacing #RoboRace ⁦@DAVGtec…
Jan 16
DIY Robocars via Twitter
RT @chr1sa: And after that came our races, 50 in all. This battle between these two Russians was the best we've ever seen -- incredible fig…
Jan 16
DIY Robocars via Twitter
RT @chr1sa: Before our @DIYRobocars virtual race this weekend, we had a presentation from the team that won the Indy Autonomous Challenge i…
Jan 16
DIY Drones via Twitter
Dec 12, 2021
DIY Robocars via Twitter
Dec 12, 2021
DIY Robocars via Twitter
RT @chr1sa: Just a week to go before our next @DIYRobocars race at @circuitlaunch, complete with famous Brazilian BBQ. It's free, fun for k…
Dec 4, 2021
DIY Robocars via Twitter
How to use the new @donkey_car graphical UI to edit driving data for better training https://www.youtube.com/watch?v=J5-zHNeNebQ
Nov 28, 2021
DIY Robocars via Twitter
RT @SmallpixelCar: Wrote a program to find the light positions at @circuitlaunch. Here is the hypothesis of the light locations updating ba…
Nov 26, 2021
DIY Robocars via Twitter
RT @SmallpixelCar: Broke my @HokuyoUsa Lidar today. Luckily the non-cone localization, based on @a1k0n LightSLAM idea, works. It will help…
Nov 25, 2021
DIY Robocars via Twitter
@gclue_akira CC @NVIDIAEmbedded
Nov 23, 2021
DIY Robocars via Twitter
RT @luxonis: OAK-D PoE Autonomous Vehicle (Courtesy of zonyl in our Discord: https://discord.gg/EPsZHkg9Nx) https://t.co/PNDewvJdrb
Nov 23, 2021
DIY Robocars via Twitter
RT @f1tenth: It is getting dark and rainy on the F1TENTH racetrack in the @LGSVLSimulator. Testing out the new flood lights for the racetra…
Nov 23, 2021
DIY Robocars via Twitter
RT @JoeSpeeds: Live Now! Alex of @IndyAChallenge winning @TU_Muenchen team talking about their racing strategy and open source @OpenRobotic…
Nov 20, 2021
DIY Robocars via Twitter
RT @DAVGtech: Live NOW! Alexander Wischnewski of Indy Autonomous Challenge winning TUM team talking racing @diyrobocars @Heavy02011 @Ottawa…
Nov 20, 2021
DIY Robocars via Twitter
Incredible training performance with Donkeycar https://www.youtube.com/watch?v=9yy7ASttw04
Nov 9, 2021
More…