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If i wnat to lift/hover my self up 30ft off the groud (i am 110 pounds) how much HP would i need and how much would i need to lift/hover 300 pounds. Please answer TYSM
Help with thrust and HP needed to hover 300 pounds at 30' off the ground
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- #2
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Sorry if this is in the wrong section this is my first time
- #3
russ_watters
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Lift/hover with what? A quadcopter like thing? That's really dangerous.
- #4
Baluncore
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Welcome to PF.
To remain in a fixed position, there must be a force equal and opposite to your weight, that supports you. The power needed to generate that force will vary depending on how you are supported in that fixed position. Power is the rate of energy flow. Force is not power, unless something moves.
A floor or a ladder is solid, and so nothing moves, it keeps you up without requiring a supply of energy.
A helicopter or aircraft moves air to generate the force that holds you in position. That requires a continuous flow of energy.
To remain in a fixed position, there must be a force equal and opposite to your weight, that supports you. The power needed to generate that force will vary depending on how you are supported in that fixed position. Power is the rate of energy flow. Force is not power, unless something moves.
A floor or a ladder is solid, and so nothing moves, it keeps you up without requiring a supply of energy.
A helicopter or aircraft moves air to generate the force that holds you in position. That requires a continuous flow of energy.
- #5
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Yeah basically
- #6
berkeman
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- #7
anorlunda
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Here is a place that offers a $1 million dollar prize for anyone who can make that work safely.
https://goflyprize.com/
https://goflyprize.com/
- #8
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Damn 1mil USD is a lot though if even i where to make this it would cost me 5 grand (which i don't have)
- #9
Lnewqban
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- #10
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I appreciate the help but that definatly can't lift 300 pounds let alone 20lb
- #11
bob012345
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Will you be electric or jet fuel powered? Frenchman Franky Zapata's Flyboard lifts ~200 lbs with 5 model jet engines. A rough back or the envelope calculation based on a 45 lb thrust engines each consuming 0.55 L/min with an energy density of 44.6 MJ/kg gives about 2500HP but probably 80% of that power is waste heat.
The Jetson machine above quotes a max power of only 88kW which is ~100HP.
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- #12
Lnewqban
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More power is no problem, keeping stability is.
https://en.wikipedia.org/wiki/Human-powered_helicopter
- #13
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I am tryn build a drone that i can stand on, like a quadcoppter, sorry
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- #15
berkeman
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Please take the time to type out whole words; it will help your cause here a lot. Is "tr" = "tryn" = "trying"?
Beyond that, what is your background in feedback and control theory? If you want to design a drone to lift you in flight, you will need a strong background in control theory (plus all the other stuff like aerodynamic propulsion)...
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sorry
- #17
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ye, so i made this frame out of alumins and not i need a motor that cna lift 50 pounds (i would then buy a few to support my weight of 110lb)
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- #19
berkeman
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No worries.
BTW, do you see how the control issue gets a lot easier if the propulsion lift centers are above the center of mass of the vehicle? Kind of like controlling a helicopter is easier than the control system of a Segue or a hoverboard...
BTW, do you see how the control issue gets a lot easier if the propulsion lift centers are above the center of mass of the vehicle? Kind of like controlling a helicopter is easier than the control system of a Segue or a hoverboard...
- #20
russ_watters
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I'm worried. @sesefdfsd this is a project that is dangerous and expensive to do correctly. To do it poorly is just dangerous. In between is extremely dangerous. For liability reasons we can't help you with this project, and I strongly suggest you abandon it.