Recent content by Meta4

I've seen recorded data from quite a few drones that fell with props attached, but never for a drone without props. It's fairly uncommon for them to get into a position from which they can fall unless they have props.

This Randall Warnas? https://mavicpilots.com/threads/randall-warnas-quits-autel.114923/ Or perhaps not

Don't fool yourself about Autel being a US company. Their head office is just down the road from DJI in Shenzhen. Very few buyers would be prepared to pay for a genuine US made drone.

No

Apart from not being able to buy batteries for it, the Inspire 1 is a big, heavy clunker with very short flight times. You've missed the best mapping and general purpose drone - the Phantom 4 pro and the Mavic 2 pro would be a close 2nd choice.

Probably not ..... but no-one buys an H6D to make 8x11 prints https://www.dpreview.com/news/9807859981/the-hasselblad-h6d-400c-multi-shot-spits-out-insane-400mp-images

They use the same sensor and are both good.

Sorry ... I'll have a go at physics any day but I can't work out what you are trying to say or how it relates to the thread topic.

No, but I understand the physics well enough. I'm not sure what your point is. You agree that it wouldn't make any measurable difference in a fall from 400 ft. But then talk about how air density is a factor when flying planes from higher altitudes on a hot day.

The fall is always close to vertical with only a small drift if in high winds or the drone was flying fast when things came undone.

Sorry .. that number should be 14-16 metres/sec. I've analysed the flight data from hundreds of flight incidents, including some where the drone had power on as it fell from the sky. That's where my data comes from.

None of which make any difference you could measure between 400 ft and the ground No .. the drone wobbles and tumbles. It doesn't maintain a fixed position. Which I gave to show that his number was out by a factor of 100% It achieves it in the first second regardless of orientation

Your freefall calculator isn't worth much unless you are interested in objects falling in a vacuum. In the real world air resistance is a real factor. DJI drones up to the size of a Phantom reach a terminal velocity of 12-14 metres/sec fairly quickly. I haven't seen data for an Inspire or...

I've been waiting for this to be released for a long time. The Evolve 2 was planned for release last year by the pandemic trashed those plans. Xdynamics has been working on getting it to production and it's looking like it will probably be available in about a month. Yesterday they unveiled...

1. If your quadcopter loses a prop or motor it starts to spin because of the unbalanced torque of two spinning clockwise and one anti-clockwise or vice versa. 2. And it's unable to hold itself in the air against gravity with only 3 props. The recorded flight data from numerous cases of loss of...