Recent content by voyager

Hmm, but is grouping thrusters together like suggested in the picture not the same as ducting thrust... sort of?

Can rotors amplify their collective thrust if you 'lense' them a bit?

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I like it, Florida Drone! Could not quite get the guy's name, nor that of the company he is working for.... Ah, his name was at the end titles.

So they can vector their thrust. Toy-like drones are too small to make this sort of adjustment worthwhile... But I can imagine that future aerial vehicles may make use of electric rotors that swivel to vector thrust to the rear after vertical takeoff, to commence forward flight

How much kW does it take to lift 2000 lb from the ground vertically, generally speaking? The approx. 2000 lb weighing Robinson R44 uses a massive 8.9 liter 245 hp (183 kW) / 507 lb-ft engine to get airborne. So, 11 lb per kW (or approx. 5 kg per kW).

Hi guys, Which companies, specialized in thrusters using fixed-pitch props for drones, do you happen to know that are able to engineer and build 4 to 6 ft diameter thrusters?

The vertical takeoff will sap a lot of energy. Is there a formula how to calculate how much energy for an aerial vehicle like the Airbus to ascend say the first 10 meters? At what vertical acceleration is there a point that one can safely say the aerial vehicle is airborne?

Interestingly enough Mavrx inc is a 100% about crop culture management. Has he given up on copters then?

Battery technology (weight : yield ratio) and lightweighting are paramount I assume... Btw, would it help if you make the cabin and the hub container on top a bit more aerofoil-shaped? Obviously not the complete weight can be compensated by aerodynamic lift, but everything helps... Say the...

Found out that the Airbus quad has counter-rotating rotors within each nacelle. That means that using five rotors (ten actually) would not change torque balance I guess...

With the quad rotors churning out the equivalent of 180 hp, Airbus thinks it can airlift two passengers. Most designs I have seen so far, only one person gets airborne. What's the maximum of a quadcopter, with the sort of 'wingspan' (16x14 ft) and lifting power that the Airbus quad is exhibiting?

A sort of airbag or cushion could be deployed too underneath the cabin to soften the impact of touchdown.

Hm, in case of a dramatic failure the Airbus Pop.Up can of course deploy a parachute. I guess that the box on top of the cabin contains such a chute.

Forgot about the blades too... I know it sounds complicated, but why not make the rotor blades of the quadcopter variable too?... Do the nacelles influence autorotation btw?