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Flying under stuff
956 16 2016-5-24
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MrSilicon
lvl.4
Flight distance : 4613543 ft
Australia
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There's a freeway bridge I'd like to fly the length of under and it has a nice clearance of about 10m between the uprights so crashing should not be a issue. But then I thought what happens if RTH is triggered while it's under there? Pretty much screwed right?

Any advice or stories from pilots that have flown beneath things?
2016-5-24
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leanlinao
Second Officer
Flight distance : 1495906 ft
Philippines
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If you want to fly underneath a thing like a bridge then make sure you to position yourself to have unobstructed signal from anything.

If the drone goes up, high chance of crashing especially if you get no signal.
If you just push RTH, you can still counter that.
2016-5-24
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MrSilicon
lvl.4
Flight distance : 4613543 ft
Australia
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leanlinao Posted at 2016-5-24 17:13
If you want to fly underneath a thing like a bridge then make sure you to position yourself to have  ...

Well my view is unobstructed, I'm standing beneath the bridge on one side looking down the length of it, but can't be 100% on the signal, with bridges having metal in them and all.

I figured if the signal was obstructed the RTH failsafe would kick in but the lowest altitude you can set for RTH is 20m... which could be pushing it.
2016-5-24
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Farnk666
Captain
Flight distance : 1711394 ft
Australia
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Remember CASA rules - need to keep 30m clear of structures.
2016-5-24
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dwaiteretired
lvl.3

United States
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Setting the lost signal options in the Dji Go app to     hover    would prevent the Inspire from rising and hitting the overpass if signal was lost.
2016-5-24
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R&L Aerial
Captain
Flight distance : 298100 ft
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United States
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I have always wanted to fly under bridges but never have, I don't think it's worth the risk. I saw a video on u tube were a guy flew under a bridge and had recover his drone from the water.
2016-5-24
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Donnie
Captain
Flight distance : 3636782 ft
United States
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     Simply change the RTH settings .  Use caution , there is a lot of metal under that bridge and that makes the compass go wacky, perhaps be in Atti mode and keep the aircraft close by.  Just proceed with caution.  You at least cared enough to ask questions, that is a good sign of a smart pilot.

donnie
2016-5-24
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Tharg (from the
First Officer
Flight distance : 120784 ft
United Kingdom
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Since you will be flying under CASA rules will you also not need the permission of the bridge owner/authority as well?
2016-5-24
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Farnk666
Captain
Flight distance : 1711394 ft
Australia
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Tharg (from the Posted at 2016-5-25 02:15
Since you will be flying under CASA rules will you also not need the permission of the bridge owner/ ...

Only if you fly within 30 meters.
2016-5-24
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rodger
Captain
Flight distance : 15812070 ft
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United States
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YUP! You are! your Phantom is going to take the most direct route home. I wouldn't let it get that far away so you wouldn't have to use RTH. If you are making a Video you could do it a section at a time and put it all together in Post.
2016-5-24
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MrSilicon
lvl.4
Flight distance : 4613543 ft
Australia
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It would be a very cool shot, but I'm leaning toward playing it safe. There's just a few too many risks.

I have my CASA controllers Cert, but I'd thought I'd see what you guys think before asking for approval to fly there.
2016-5-24
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RichJ53
Captain
Flight distance : 1676706 ft
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United States
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Keep the radio and aircraft LOS at all times with GPS turned off (Atti mode) You will need to fly it and not count on the GPS for holding your position. As long as the radio signal is not blocked  between you and the Inspire......you should be okay, but is always a risk. This will not let the Inspire go into RTH function while in Atti mode.



Rich
2016-5-24
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ric8
lvl.4
Flight distance : 954665 ft
Australia
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If you can get close enough to the structure that you will be flying under and disable the RTH function during that flight.....Just a thought.
2016-5-25
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Tharg (from the
First Officer
Flight distance : 120784 ft
United Kingdom
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Farnk666 Posted at 2016-5-25 00:02
Only if you fly within 30 meters.

Which the OP would be since the uprights are 10m apart!

And isn't 30m for take off and landing only - 50m at all other times?
2016-5-25
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aerofilm.pt
First Officer
Flight distance : 1142375 ft
Portugal
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Just use Att. mode, and change the RTH to home settings to hover.
Try to fly has low has possible, in a way that you can fly under but away from the top.
2016-5-25
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Farnk666
Captain
Flight distance : 1711394 ft
Australia
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Tharg (from the Posted at 2016-5-25 20:49
Which the OP would be since the uprights are 10m apart!

And isn't 30m for take off and landing onl ...

No, 30 meters clear across the entire flight.
Depends upon what course the OP intended to fly.
Would need to stay clear of the uprights, deck structure and surface and superstructures.
2016-5-25
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Tharg (from the
First Officer
Flight distance : 120784 ft
United Kingdom
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Farnk666 Posted at 2016-5-25 14:40
No, 30 meters clear across the entire flight.
Depends upon what course the OP intended to fly.
Wo ...

Ahhh....Thanks. I thought it was the same as the UK which is 50m (except for Take off and landings when its reduced to 30m)
2016-5-25
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