Questions tagged [thrust]

Any method of propulsion used by drones or model aircraft to move and fly.

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4
votes
3answers
59 views

How useful is knowing the torque generated by a motor prop combination?

I'm designing a series of small drones for use in a swarm configuration in combination with terrestrial / marine / submarine robots. As part of the process, I've designed a test rig to measure the ...
4
votes
2answers
25 views

Do propellers at different angles work the same? And do intersecting flows of air work the same?

Say a propeller pushing thrust downwards generates 70 lbs of force. If you tilted the angle of the system to 45 degrees would it generate the same thrust? If you had each rotor angled inwards of a ...
11
votes
2answers
2k views

Do propellers layered on top of each other have twice the thrust of one propeller?

If you had two of the same propellers layered on top of each other going at the same RPM, with some space in between, would the thrust be double the amount of a single propeller at the same RPM? If ...
5
votes
1answer
75 views

How do thrust requirements change as a multirotor leaves ground effect?

Assuming either a quadcopter or a hexacopter, is there any published data on how much more energy is expended to escape the ground effect? Is it a function of the thrust being produced to lift the ...
2
votes
1answer
47 views

Datasheets for lift of a 27x12x2 inch propeller?

I'm looking to find the amount of lift produced by a 27 inch diameter, 12 inch pitch, two-blade propeller spinning facing the ground. Are there any datasheets that show the amount of lift given at any ...
3
votes
1answer
62 views

How do ducted fans impact drone performance?

There are many drones available which use ducted fans as opposed to open propellers. How does a ducted fan quadcopter differ in performance from an open-prop quadcopter? Note: the other question ...
4
votes
2answers
88 views

What impact does a shroud have on the torque produced by the prop(s) of a multirotor that incorporates a properly designed shouded propeller?

Based on the research presented here: "Hover and wind-tunnel testing of shrouded rotors for improved micro air vehicle design" and other reading that translates similarly well-designed shroud and ...
3
votes
2answers
183 views

How do I calculate thrust for a quadrocopter?

I am designing a quadrocopter style aircraft that uses a 20 inch propeller 1.625 inches in width and has a pitch of 8 inches. How do I calculate static lift / thrust and the dynamic thrust / lift ...