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Mustang Air to Air: The Sequel
  
 
nickjohnson
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p.3630 #1 · p.3630 #1 · Mustang Air to Air: The Sequel


Steve if you mean the structure @2.22 …. err.... that's why I asked about the roof on the Butler's cabin.


Dec 12, 2013 at 07:34 PM
Donald Gray
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p.3630 #2 · p.3630 #2 · Mustang Air to Air: The Sequel


Thanks for the comments, all

I did look at the Phantom - that is the quad/drone that my son in Australia has, however I was (easily) talked into a wee bit bigger, but needed to be built and some soldering to be done..

I got the DJI F450 Flame Wheel Quad with the Zenmuse H3-2D Gimbal.. The aircraft is very sophisticated. It is fitted with autopilot, GPS (gps to within a few feet), and 3 axis gyros.

It has a fail-safe of 'Fly to Home'. It takes a GPS reading of the take off point and in the event of radio failure, or if I hit the panic button on the radio, It will stop what it was doing, pause, attain a height of 20 metres and fly to its take off point, hover for 15 seconds, slowly land and shut down the motors.

I use a 14.8v 5200mA LiPo battery that gives me 15 minutes flight time.

It really is a magic piece of kit and great fun to fly... But it takes a little learning! I have already learnt how not to land on my neighbour's roof.

The photos are as I was building it, before the props & camera fitted.


The gimbal & camera fits unter the bit that sticks out on the right
The orange/white bit sticking up is the GPS receiver and compass system.
The computer/flight controller/auto pilot is un the middle (out of view)





The gimbal fits under the black but with the rubber anti-vibration rubbers.



Dec 12, 2013 at 08:07 PM
Donald Gray
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p.3630 #3 · p.3630 #3 · Mustang Air to Air: The Sequel


Jan-Arie wrote:
Very Cool Donald and it goes pretty high to


The setup software allow one to set up to a maximum of 2000 feet!

I dont have an altimeter fitted but I guess I am achieving about 800 feet - it gets a little to small to clearly see which way it is pointing. It does have an ultra bright that (similar to an anti-collision light) thatis on the rear of the craft - that is very useful for direction indication but at height with the aircraft rotated it can also get lost to sight... Still there is the panic switch for 'Return to Home'

If I centre the sticks, the GPS takes over and it will hover at the current height & location.



Dec 12, 2013 at 08:23 PM
Donald Gray
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p.3630 #4 · p.3630 #4 · Mustang Air to Air: The Sequel


Jeff W. wrote:
A member of our AzAP continent has a Phantom and likes it very much. From the videos I've seen him produce thus far, it appears to be a very stable and effective platform.


The issue with the Phantom is its short duration Flight time of 7 minutes without gimbal & camera payload.

DJI have just brought out the Phantom V2 (Phantom Vision) that has its own built in HD camera, but from reports I have had from a friend indicated that the IQ of the Phantom camera does not come anywhere near the IQ of the GoPro Hero3

The Zenmuse H3-2D gimbal is stabilised with veru accurate ansd fast brushless motors and keeps the camera horizontal on turns or altitude changes. It makes for a much nicer video result - the horizons don't tilt.



Dec 12, 2013 at 08:34 PM
Donald Gray
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p.3630 #5 · p.3630 #5 · Mustang Air to Air: The Sequel


nickjohnson wrote:
Nice to see you back again Donald! Have you had the other side done yet, or are you still going round in circles?
Super fun video of Gray Towers and the serf's accommodation. Has the Butler's cabin got a roof yet?


Good evening Nicholas,

I seem to be able to walk in a straight line now with my new tin hip, thank you.

Indeed the Butler's cabin is now completed and ready for you to move in. You must provide your own uniform an gloves. Naturally the cost of your accommodation will be ducted from your monthly allowance. However, you will be allowed time off to take up a second employment to supplement your most generous remuneration from us. You may take your leave every third Sunday afternoon once you have cleaned all the shoes, silver, checked and locked the wine cellar and valeted the cars. You must report back for duty at 18:00 on the day of your time off.



Dec 12, 2013 at 08:48 PM
Donald Gray
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p.3630 #6 · p.3630 #6 · Mustang Air to Air: The Sequel


stevez wrote:
Donald, I really enjoyed your video; isn't the Phantom a kick? What's the odd structure/lean-to near the car park at the edge of the soccer...er, football pitch?



It is a 'football' field.

It as a place for kids to play in - I guess it is supposed to represent a wigwam.

PS , I have the DJI F450 Flame Wheel, not a Phantom...



Dec 12, 2013 at 08:53 PM
futurshox
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p.3630 #7 · p.3630 #7 · Mustang Air to Air: The Sequel


Holy cow Donald, you don't mess about when buying your attack drones, do you? Looks like a serious piece of kit.


Dec 12, 2013 at 09:37 PM
Donald Gray
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p.3630 #8 · p.3630 #8 · Mustang Air to Air: The Sequel


futurshox wrote:
Holy cow Donald, you don't mess about when buying your attack drones, do you? Looks like a serious piece of kit.

Well, it was all your fault in the first place (Thanks)

This is of my very first flight - risky because I was advised to take my solo in a large field - I chose a small corner of the garden - it focused the mind! The video is of the F450 itself, not a vid taken by an on board cam

" target="_blank">First flight

EDIT: This video also shows the new Butler's residence specially constructed for Nicholas with all mod cons (windows and a roof)

This was my first out in the wild with the camera & gimbal fitted... learning to control the craft and the camera - The wind was gusting to 30mph

" target="_blank">Ham Hill Country Park



Dec 12, 2013 at 10:13 PM
nickjohnson
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p.3630 #9 · p.3630 #9 · Mustang Air to Air: The Sequel


Terrific stuff Donald. Might I suggest that there may be less elaborate ways to tidy the autumn leaves in the garden? The sheep herding was very impressive. You may be getting a call from the sheep dogs union.

Edit for TOPP




Dec 12, 2013 at 10:46 PM
stevezzzz
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p.3630 #10 · p.3630 #10 · Mustang Air to Air: The Sequel


Donald, mine is the Phantom 2 with built-in Vision camera. I looked at test video of both Hero3 and Phantom Vision before purchasing; it looked like pretty much of a wash in terms of IQ. At least, that's what I tell myself. The advantage of your setup is clearly the two-axis gimbal; the Vision is only stabilized in pitch, not roll.

Did you see my test vid when I posted it a few weeks ago?



I only uploaded it at a modest size (I don't pay for a Vimeo account and it limits the size of my files) but the full resolution video looks pretty good to me. The Phantom 2 has great battery life: 20-25 minutes and all the auto-hover and auto-Home features you've got with yours, but I didn't have the satisfaction of building it.

By the way, it looks like one of your props is unbalanced: I noted as you power up how one of the arms goes through a period of sympathetic vibration.

And what are those monoliths in the field, in your test video?



Dec 12, 2013 at 11:01 PM
 

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Donald Gray
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p.3630 #11 · p.3630 #11 · Mustang Air to Air: The Sequel


Ham Hill is an Iron Age settlment and was a Roman Fortress and quary. Ham stone is famouse for its redish colour and is used in most of the local houses.

The monoliths were erected as a stone circle as a monument to the Millenium 2000.

Ham Hill is still an active quary for limited extraction or stone.
--------------
I have just had a look at your Phantom Vision Video - I take back my comment re IQ. It is very nice. the flight time of the V2 over the V1 is a vast improvement - 25 minutes Vs 7! I am happy with my 15 minutes but plan to get another LiPo battery later.
---------------
I apologize to everyone who doesnt need or want to know about prop palancing but this is for Steve and all RC Aircraft/Drone/Boat enthusiasts...

Yes, my props were out of balance - I had ordered a DU-Bro prop balancer but it hadn't been delivered & I was too keen to see my baby in the air.

When the balancer arrived, I just could not get proper results. I discovered one of the cones was off centre - I did a video of it and showed it to the manufacturer - They sent me another cone but that too was out of balance... they are sending me 'a few' more for me to try.

" target="_blank">



However, I have researched the whole subject of prop balancing and have made a simple laser + mirror balancer that dynamically balances the motor casing, prop hub and the prop itself.

I got the idea from this video

" target="_blank">Laser balancing

I slightly modified their methodology and found that using a laser and mirror gave outstandingly sensitive results. I did a write up for another group I am a member of. It may be of interest to you:
---------------------------
Well, well, well! I am very surprised at the ease of balancing this is. I found it very sensitive and apparently very accurate.

The ethos I adopted was 'consistency leads to repeatability and accuracy' ...

My kit:
* A small red laser unit salvaged from an old spirit level. (Cost when the level and tripod was new at B&Q £10)
(Do an eBay search for a laser pointer.)
* A small mirror. (salvaged from a defunct scanner in which there is a mirror with the silvering on the front surface) I put a small strip of double sided carpet tape on the back
* small vice to clamp the laser unit on.
* a roll of sticky insulating tape (for balancing)
* Bottle of Tipp-ex (for marking parts)

Once set up, I had balanced the four propulsion units on the quad in about half an hour. I say propulsion unit because following the methodology, balances the outer motor case, prop hub, prop and the prop nut as a whole and not just the prop.

Methodology:
I did not disconnect any of the motors. Each of the 4 motors were powered up in the process.
My quad has the larger landing legs that lift the motor arms above the deck. If your drone relies on the short stubby legs on the arm, you will need to lift the legs free while doing the test. I suggest a book or something similar under the body of the drone.

Preparation:
1) First, remove all props.
2) Mark each arm with its appropriate motor number (I used a CD/DVD pen)
3) Mark ONE tip of each PROP with a small touch of Tipp-ex.
4) Mark the orientation of each prop to the orientation of the motor shaft and on the outer casing of the motor. (I used a small dollop of Tipp-ex.)
5) Using the CD/DVD marker pen, give each prop the number of the motor it will be associated with. The same with each prop nut. I don’t believe the nuts will be out of balance anyway but there is no harm in being consistent.

Balancing:
6) Still with no props fitted…
7) Connect freshly charged battery
8) Attach the mirror to the stubby leg on the end of #1 motor arm, using double sided sticky tape
9) Put the drone in position with the mirror at 45 degrees to the laser, the laser should be in front of the drone. The reflected laser spot will be projected a 90 degrees, hopefully on to the wall adjacent.
9) Arm and start up the un-propped motors on slow revs. Adjust the laser and mirror so that you can see the projected spot on the adjacent wall.
10) Holding the top of the drone to stop it from moving, slowly rev up the motors and observe the laser spot. Hopefully, the motor will be in balance and the spot will not move.
11) Stop motor.
12) Install the prop and nut in the orientation previously marked.
13) Arm & start motor on low revs – observe the laser spot. Keeping your hand and arm well clear of the prop, apply gentle downward pressure of the drone. ( You don’t want it tipping over during the next steps)
14) Slowly advance the throttle to rake off speed and to flying speed. Observe the laser spot. If it doesn’t move, it may well be a well-balanced propulsion unit. However, deliberately unbalance the prop by adding a little insulating tape on one side of the prop (Note which side, the one with the Tipp-ex or the other) and do the test again. This time there will be a marked difference in the behaviour of the laser spot!

At this point you will have to experiment with the size and placement of your favourite balancing tape until you get the spot to be as steadty as possible. Once yiou are happy with the balance of the prop, remove it and its nut from the motor and start over again at (8) above until each motor unit is done in turn.

When finished, remove the battery and assemble each prop on their respective motor, observing the orientation of the prop on its shaft and lock it down with its nut. You’re done. Now go for a test flight.

A note on motor balance:
I have only seen the inside of two motors (different manufacturers). Both had some hardened ‘goo’ that was obviously there to balance the outer case of the motor (as my daughter would describe it: “the spinney round bit”

One of these motors I noticed had some metallic debris (AKA: FOD) stuck between some of the magnets. This could have been ingressed during a crash near metal shaving contaminated ground or even if the motor had been rattling around a tool box or other environment where metal shavings were present. The magnets are extremely powerful and can attract fine metal FOD during its life. At the rotational speed the spinney round bit travels, this could/might//may/will unbalance the motor.

The method I adopted will counteract any unbalances in the motor case, propeller boss, propeller and its nut.
----------------------
Here endeth the lesson



Dec 12, 2013 at 11:59 PM
NightOwl Cat
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p.3630 #12 · p.3630 #12 · Mustang Air to Air: The Sequel


http://www.nationalmuseum.af.mil/news/story.asp?id=123373835

" target="_blank">



New arrival today.





© NightOwl Cat 2013





© NightOwl Cat 2013





© NightOwl Cat 2013





© NightOwl Cat 2013





© NightOwl Cat 2013

Brave Soul, 7°F/-14°C at landing time




Dec 13, 2013 at 01:48 AM
Jeff W.
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p.3630 #13 · p.3630 #13 · Mustang Air to Air: The Sequel


@Laura - Super photos of the Osprey - a tough platform to photograph. Image #1 is my favorite.

We enjoyed a terrific sunset this evening. It even made this FedEx A300 look good. I guess you really can put lipstick on a pig

BTW, I'm confident that most of the packages in that plane were ordered by my wife!







Dec 13, 2013 at 05:55 AM
NightOwl Cat
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p.3630 #14 · p.3630 #14 · Mustang Air to Air: The Sequel


Thanks Jeff. It was the first time I ever saw the aircraft fly, so didn't know what to expect. I suspect the pilot put on a bit of an extra show since we'd all braved those temps for the arrival. Bad thing is that during a good portion of the flyover, the sun was directly in my lens, first pass through I got an eyeball full of sun, something that normally doesn't happen here during the winter months. I'm just happy that one of my husband's coworkers gave me the heads up on the arrival so I could plan better. Oh, and the two galleries are back open, and the behind the scenes tours are back, as well. If you want to visit the R&D and Presidential Galleries, now is the time, as the buses weren't even filled up yesterday, and in talking with the volunteer that was at that desk, this time of year is really slow in there.


Dec 13, 2013 at 01:50 PM
Jeff W.
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p.3630 #15 · p.3630 #15 · Mustang Air to Air: The Sequel


A cousin to Jim's Globals buzzing the tower at KPHX.







Dec 13, 2013 at 02:53 PM
PDumm
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p.3630 #16 · p.3630 #16 · Mustang Air to Air: The Sequel


Hi every one, Got a question. Was out photographing some Christmas 'Heavies' this morning and was getting a wide range of exposers from under to way over exposed in just a few second apart. I was shooting in Aperture-priority mode and had metering set in matrix. Is my D800 just not awake in the morning or am I just doing some thing wrong?

Thanks
Paul



Dec 13, 2013 at 06:11 PM
JWilsonphoto
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p.3630 #17 · p.3630 #17 · Mustang Air to Air: The Sequel


Hi Paul,

Zim may have another take, mine is the mistake you were making was shooting something moving with a D800 Wish it wasn't so, love the camera for a lot of things, but when you introduce a moving subject, it just isn't the camera of choice, and it won't make you look like a hero.



Dec 13, 2013 at 07:19 PM
stevezzzz
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p.3630 #18 · p.3630 #18 · Mustang Air to Air: The Sequel


Paul, let me ask the obvious question: do you have HDR bracketing turned on by mistake?


Dec 13, 2013 at 08:42 PM
PDumm
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p.3630 #19 · p.3630 #19 · Mustang Air to Air: The Sequel


No Sir.
............................wwwwwwwwwwwwwwwwwwwell, now that I look at it, I fell like the worlds biggest dumm-a$$, So that would be a, YEP!!!!!!!!!!!!!!
# 4237 time this year I lived up to my name.


Thanks, Zim.



Dec 13, 2013 at 09:26 PM
stevezzzz
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p.3630 #20 · p.3630 #20 · Mustang Air to Air: The Sequel


PDumm wrote:
No Sir.
............................wwwwwwwwwwwwwwwwwwwell, now that I look at it, I fell like the worlds biggest dumm-a$$, So that would be a, YEP!!!!!!!!!!!!!!
# 4237 time this year I lived up to my name.

Thanks, Zim.


It's all part of the total service package that is MA2A. And it's not like I haven't done this myself, more times than I can count; that's why I asked the question.



Dec 13, 2013 at 10:51 PM
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