How to make a small model airplane take off (not working yet)

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SUMMARY

The discussion focuses on optimizing a small model airplane for takeoff, emphasizing the need to improve motor capacity and reduce weight. Participants suggest increasing battery capacity to DC 9 volts and using lighter materials such as plastic foam (Depron or Styrofoam) for construction. The importance of a suitable propeller and wing profile is highlighted as critical factors for achieving flight. The conversation also critiques the original design's viability, indicating that a paper prototype may not be the best approach for this project.

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  • Understanding of electric motor principles and torque
  • Knowledge of lightweight materials suitable for model aircraft
  • Familiarity with propeller design and aerodynamics
  • Basic concepts of battery capacity and voltage in RC applications
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Hobbyists, model airplane enthusiasts, and anyone interested in building and optimizing small RC aircraft for flight.

chwala
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Homework Statement:: I would like to know how to probably vary the motor capacity or battery in that case to ensure that the plane takes off. In the attached link- the plane did not take off.
Relevant Equations:: Physics

Kindly find the link of a video on the same- downloaded from Youtube.

 
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Hi,
While that's a cute little arts and crafts project, I'm not sure it has good odds of being able to fly. It's pretty heavy and has a very poor propeller and wings. Compare to the classic balsa and rubber band plane:
https://www.amazon.com/dp/B01EZ1N3GM/?tag=pfamazon01-20
44_CaptainStorm.1__60026.1608661669.jpg

Maybe you could combine one of those with this electric paper airplane conversion kit:
https://www.amazon.com/dp/B00DTIYD4Y/?tag=pfamazon01-20

2.jpg
 
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Question to @chwala: What does this have to do with Introductory physics homework? Your "relevant equation" is not even an equation or relevant.
 
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kuruman said:
Question to @chwala: What does this have to do with Introductory physics homework? Your "relevant equation" is not even an equation or relevant.
Agreed. Thread moved from HH/Intro Physics to the DIY forum.
 
kuruman said:
Question to @chwala: What does this have to do with Introductory physics homework? Your "relevant equation" is not even an equation or relevant.
My apologies...
 
chwala said:
My apologies...
No need to apologize, we have it all sorted out. So what's your next step for getting things reliably off the ground?
 
berkeman said:
No need to apologize, we have it all sorted out. So what's your next step for getting things reliably off the ground?
I am still looking at this...The torque will be largely determined by current flow...increasing battery capacity to DC 9 volts would that help?
 
chwala said:
I am still looking at this...The torque will be largely determined by current flow...increasing battery capacity to DC 9 volts would that help?
It might help but you would do a lot better by reducing unnecessary weight and make significant improvements to the propeller.
 
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DaveC426913 said:
It might help but you would do a lot better by reducing unnecessary weight and make significant improvements to the propeller.
Yes, i had thought of using light paper for the prototype...
 
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chwala said:
Yes, i had thought of using light paper for the prototype...
OK, now I'm confused.
I thought the challenge was to get that plane in the air - essentially, the one in the video.
A paper prototype would essentially be starting from scratch.
 
  • #11
DaveC426913 said:
OK, now I'm confused.
I thought the challenge was to get that plane in the air - essentially, the one in the video.
A paper prototype would essentially be starting from scratch.
I was thinking that the material used was not light enough...
 
  • #12
Google for "diy rc plane". Best material these days is typically some kind of a plastic foam, like Depron, Styrofoam etc. Unless you really know what you are doing it is best to buy a ready propeller, small LiPo battery, brushless motor and you should be ready to go.
 
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  • #13
chwala said:
I was thinking that the material used was not light enough...
Yes. I am coming around to the idea that the plane in the video is not the actual type of plane you're trying to get moving. The opening post led me to believe that was the plane.

You are simply using the video as a talking aid, nothing more.

Sorry for the thread pollution.

In that case, yes, paper would be quite light. Some planes use mylar stretched over wire, which can be even lighter.
 
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  • #14
DaveC426913 said:
I am coming around to the idea that the plane in the video is not the actual type of plane you're trying to get moving. The opening post led me to believe that was the plane.
Same here.
Since nothing is known about the actual plane it's a shot in the dark, but: make sure that
- you have at least some wing profile
- check if your plane can glide.
 
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