You could easily land by catching the handle of the devices linked above. Why would the monopod be any different?
Tight landing space onboard a tall ship
- Thread starter stevebarnes
- Start date
that's exactly what I found via an Aussie seller so I can get it promptly.
Just don't fall overboard, reaching out for it over the rear railing! Looks pretty low and your feet can't get underneath it, because the rear slopes away from you. You'll need to be leaning forward to remain clear of the ropes. Maybe a safety harness around your waist?
I'm hoping I can fly it in above the rear deck at the stern. If the mainsail is out to the side on a downward wind run, there will be lots of space. My only uncertainty is obstacle avoidance stopping it from coming in. Can anyone advise on this matter?
* Will it fly in ok with obstacle avidance on?
* Can I change this whilst in flight?
* or do I need to turn obstacle avoidance off??
There's actually a 'kill switch' I can enable but pulling both levers down/in or down/out. Given this lol switch could also dump the drone in the water, I'll try the flipping technique first!
I've also found this video helpful re obstacle avoidance - turn it off but have detection on your screen!
I'm curious what you mean by guide. How is it a guide?
Isn't the purpose of a handle to aid in grabbing it?
If I start descent, will it lock onto the (moving) deck or descend geo-stationary (into the water)?
You need to continuously fly it to yourself on a glide path of descent, as a normal strictly vertical landing descent will land it in the water behind the moving boat, unless the boat is stationary. Don't stop the forward flight during the descent. It can't lock onto anything.
Turn off avoidance sensors, come straight in from the stern. get a large
long handle fishing net and land it in that. You might try it t home first.
long handle fishing net and land it in that. You might try it t home first.
Are you proposing bringing your 4 whirling bladed drone to that space directly in front of or to the side of the helmsman? Does the skipper know you want to do this?Hi all,
This is the Lady Nelson, which operates from Hobart, Tasmania in Australia. She's having Redding Of the Sails events soon. I need to ascertain whether I can launch and land on her read deck whilst at sail. I'm posting because I want to check if anyone else has done something similar.
As you can see from the pictures, the read stays (ropes) fan around the stern, then there are stays toward the read of the beam (side). There's a gap though, and there's a roof on the cabin.
I am taking a look at her on Thursday, but wanted advice from anyone who's got experience with a moving object and limited space.
I assume I will need to turn obstacle avoidance right down or even off to accomplish this. I have a pretty steady hand, so am confident I can maneuver the drone. I may ask if there's a day sail I can test on first.
Advice?
Thx, Steve
Steve Barnes Media, Web & Workflow Services, Hobart, Australia
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View attachment 164168
Maybe less important than blinding or injuring the person steering the 60 tons of boat through a crowded harbor, those lines and spars are all constantly *moving* when underway, they won't be in the positions shown. And the sails will be raised, probably. The wind direction is changing constantly and no way can you happily assume the wind will come from any particular direction; sailboats can go upwind, downwind or across the wind whether you stand on the stern or bow or beam of the boat.
Finally, to appearances, you will be landing and flying within 5-8 feet of other non-participating passengers. Is that OK in Australia? It would certainly get you arrested most places.
This is very different than hand launching from a small private boat with the skipper steering to make it easy for you and other people on the boat are friends who have agreed to jump out of your way. Unless the ship has hired you and will steer for your convenience and clear an open space on deck, stop worrying about yourself or your drone and worry about everyone else. Even then, a 60 ton boat basically can't maneuver around for the ease of your droning.
If they have hired you, then get a small chase boat. An 18 ft skiff with an outboard motor would be far better and there is no reason to do anything actually on the big boat.
James in the Desert
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Lol, I did this Vietnam on a boat and watched my drone crash and I couldn't understand why until attempt # 3.
Steve,
Hand launching and catching is definitely the way to go. You can not land on a moving platform. The catching handle makes it much easier and safer to do this. Until you get very good at it, I would have one person with the control sticks and a different person launching/catching it. You can launch off the back, just reach though the gap in the rigging in the back. One person is holding the drone over the back, the other starts up the props and commands a climb. When the drone holder feels the drone tugging up, he lets go. It takes a few seconds to get the drone under good control after you let it go, that is why launching from the back is so important if the boat is moving. Sometimes mine just climbs uncommanded for a bit. Due to the rigging on the boat, I don’t know that you can recover to the back. It might work but it is tight. You might have to come up to the rear quarter. Pick the side where the drone and boat automatically separate when you let go of the drone controls. That way if the approach is not going well, you can just let the drone hover, separate and try again. The catching person is going to have to grab it out of the sky as the other person is flying to slowly close with the moving boat. As soon as the catcher has caught the drone, they turn it sideways which stops the propellers. Otherwise the drone is very angry and trying to fly away.
A few other details. Turn off obstacle avoidance, otherwise you cannot get close to the boat, many people approach the boat backwards so that left stick moves the drone left (my MPP also has no obstacle detection in the back), set it to update the homepoint as you move. Turn off the setting that limits your distance from the launch point. The active track is nice to keep the camera pointed to the boat but it does limit the speed and it does not do a good job keeping the drone ahead of the boat if you are getting a picture from the front. So you can use it but don’t expect it to keep up with the boat. It also limits the speed of the drone to about 20 knots which might not be enough to overcome boat speed plus windspeed.
Practice the hand launch/catch on the ground first, then on the boat when it is not moving, then finally when it is moving. Trading experience for increased risk.
I have done this a lot. The resuts are well worth the effort.
Hand launching and catching is definitely the way to go. You can not land on a moving platform. The catching handle makes it much easier and safer to do this. Until you get very good at it, I would have one person with the control sticks and a different person launching/catching it. You can launch off the back, just reach though the gap in the rigging in the back. One person is holding the drone over the back, the other starts up the props and commands a climb. When the drone holder feels the drone tugging up, he lets go. It takes a few seconds to get the drone under good control after you let it go, that is why launching from the back is so important if the boat is moving. Sometimes mine just climbs uncommanded for a bit. Due to the rigging on the boat, I don’t know that you can recover to the back. It might work but it is tight. You might have to come up to the rear quarter. Pick the side where the drone and boat automatically separate when you let go of the drone controls. That way if the approach is not going well, you can just let the drone hover, separate and try again. The catching person is going to have to grab it out of the sky as the other person is flying to slowly close with the moving boat. As soon as the catcher has caught the drone, they turn it sideways which stops the propellers. Otherwise the drone is very angry and trying to fly away.
A few other details. Turn off obstacle avoidance, otherwise you cannot get close to the boat, many people approach the boat backwards so that left stick moves the drone left (my MPP also has no obstacle detection in the back), set it to update the homepoint as you move. Turn off the setting that limits your distance from the launch point. The active track is nice to keep the camera pointed to the boat but it does limit the speed and it does not do a good job keeping the drone ahead of the boat if you are getting a picture from the front. So you can use it but don’t expect it to keep up with the boat. It also limits the speed of the drone to about 20 knots which might not be enough to overcome boat speed plus windspeed.
Practice the hand launch/catch on the ground first, then on the boat when it is not moving, then finally when it is moving. Trading experience for increased risk.
I have done this a lot. The resuts are well worth the effort.
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Tufargon
Well-Known Member
Just after it started I thought "OK, how in the heck will they get it back?". I'm not gonna try that any time soon
I have done this on a smaller less feasible sailboat to be honest. Everything mentioned is good stuff....
1. For me this ended up being, a two person operation and one person needs thick leather gloves.
2. I ended up using zip ties in a pinch to essentially create a hand on the drone that hung down a foot for so. I was flying a MP and when you flip it up side down while running it shuts off..... I just didn't have a spot that made sense to try with all the guide wires going everywhere.
3. Getting it to boot up on the boat was a challenge.... you know don't move the drone while the drone starts and of course the boat is moving. I didn't have magnetic interference issues, but the boat was mainly wood.
4. Return home is worthless while the boat is moving. Don't try to use it.
5. We ended up getting it to boot up and then the other person hand launched it from the side of the boat. While they are holding it, get it running throttle it up and out and have them let it go.
6. Fly your mission while leaving 40% or so of the battery left to start landing. You just don't know how many attempts you might need.
7. As mentioned above back it into the landing. Think about the direction and speed of the boat at the time too... We ended it bringing it to the side of the boat while the boat was cruising 7 ish knots.
8. I have cinne sticks on the controller. They are amazing for flying, but suck at start up and shutoff. Always a trade off
9. I backed it into the landing area, the drone kept trying to go up while the guy tried to catch it, so I had to turn all the safety sensors off.
10. The guy caught the zip tie handle, I could not get it to shut off with the sticks, so I told him to sling it up side down and of course that was over the water. Drone shut off and he easily retrieved it.
Would I do it again? Well probably if I had the right help! Good luck and you are doing the right thing by asking and thinking the process through!
Good luck!
1. For me this ended up being, a two person operation and one person needs thick leather gloves.
2. I ended up using zip ties in a pinch to essentially create a hand on the drone that hung down a foot for so. I was flying a MP and when you flip it up side down while running it shuts off..... I just didn't have a spot that made sense to try with all the guide wires going everywhere.
3. Getting it to boot up on the boat was a challenge.... you know don't move the drone while the drone starts and of course the boat is moving. I didn't have magnetic interference issues, but the boat was mainly wood.
4. Return home is worthless while the boat is moving. Don't try to use it.
5. We ended up getting it to boot up and then the other person hand launched it from the side of the boat. While they are holding it, get it running throttle it up and out and have them let it go.
6. Fly your mission while leaving 40% or so of the battery left to start landing. You just don't know how many attempts you might need.
7. As mentioned above back it into the landing. Think about the direction and speed of the boat at the time too... We ended it bringing it to the side of the boat while the boat was cruising 7 ish knots.
8. I have cinne sticks on the controller. They are amazing for flying, but suck at start up and shutoff. Always a trade off
9. I backed it into the landing area, the drone kept trying to go up while the guy tried to catch it, so I had to turn all the safety sensors off.
10. The guy caught the zip tie handle, I could not get it to shut off with the sticks, so I told him to sling it up side down and of course that was over the water. Drone shut off and he easily retrieved it.
Would I do it again? Well probably if I had the right help! Good luck and you are doing the right thing by asking and thinking the process through!
Good luck!
The thing in the 2nd picture is called a running backstay. There are two. They are moved around under way to balance the forestay tension, Usually, the windward one goes forward and the leeward one aft. It does not stay in one place. Just to starboard of it is the sheet. That is continuously adjusted to trim the mizzen sail.
When the boat tacks, the positions of the backstays swap as the boom swings through that area with a crew person hauling on the sheet. Yes, the stern can be clear of line when running downwind, but reaching or close hauled there will be lots of lines there. When the boat tacks or gybes they are all moving at once with people adjusting them. Hauling up or falling off, again, all those lines are moving and under hundreds of pounds of force with crew adjusting as they go.
Standing in the middle of that is the helmsman driving the boat and in that size boat probably directing the crew.
And you plan to stand in the middle of that and fly a drone. Does the skipper know about this?
My first hand-launched glider flight some 30 years ago was from a roof deck, and was foolishly thrown downwind over a canyon, where it immediately dropped into the wind-shadow of my 3 story house, and promptly crashed into the neighbors back yard! Gliders must be hand-thrown into the wind! Live and learn!
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