"Deleted my comment because it didn't make sense.
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Mick James
- 32, Male
- Canberra, ACT
- Australia
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Mick James's Discussions
Variable Sweep Wing
Started this discussion. Last reply by IKE May 21, 2011. 8 Replies 0 Likes
G'day all, I'm still doing my research on building my first UAV and so far the Skywalker looks like a pretty good candidate but I'll be operating in high wind areas (like the tops of hills) in…Continue
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Latest Activity
Mick James commented on Chris Anderson's blog post Don't feel bad -- small miltary UAVs crash all the time, too
IKE replied to Mick James's discussion Variable Sweep Wing"I believe it is a valid concept. The swept wings will have lower drag and if a portion of them is hiding inside the fuselage the wing loading will also increase thus reducing sensitivity to the wind. Of course as mentioned L/D will have a penalty in…"
Chris Gresham replied to Mick James's discussion Variable Sweep Wing"Would a delta wing be better in these conditions?
One of the other problems with variable sweep is the CG shift."
Hamish replied to Mick James's discussion Variable Sweep Wing"hmmmm, It will reduce drag a little because I imagine by sweeping it some wing will be hidden inside the fuselage, and a smaller wing area will reduce drag a bit (lift too).
The wing efficiency will also be reduced though, a swept wing promotes…"
Tom Yochum replied to Mick James's discussion Variable Sweep Wing"Use a bigger motor. :)
Sweeping the wings back should actually increase the drag since you would be reducing the aspect ratio, so induced drag would increase.
"
Mick James replied to Mick James's discussion Variable Sweep Wing"Just to clarify, sweeping the wing back won't lower the upwind drag? If that be the case, how would I improve the upwind performance of the aircraft in windy conditions?"
Mick James replied to Mick James's discussion Variable Sweep Wing"oh well that's dissapointing! looks like i'm going to have to replace the EDF with model rocket motors :)
Thanks for the info Gents. Although I really wanted to build a sweeper, there is a certain relief in scratching that off my…"
Tom Yochum replied to Mick James's discussion Variable Sweep Wing"Variable-geometry wings are used to reduce the onset of transonic drag rise above Mach 0.8 or so. I will be extremely impressed if you are planning on flying that fast!
At low speeds (below 0.75 Mach), sweeping the wings back only makes…"
Jonathan Lussier replied to Mick James's discussion Variable Sweep Wing"Easiest way to do variable sweep is to incorporate an oblique wing concept (see NASA)."
Mick James posted a discussionVariable Sweep Wing
G'day all, I'm still doing my research on building my first UAV and so far the Skywalker looks like a pretty good candidate but I'll be operating in high wind areas (like the tops of hills) in unrestricted airspace. I was wondering if anyone has played around with a variable sweep wing such as those found on the F-111 and F-14. My initial thought was to have the wing sweep automatically based on forward airspeed thus reducing drag (and lift) when heading into the wind and improving upwind and…See More
Mick James replied to Philip Fretwell's discussion USB Connector ripped from IMU Board"Hey Philip
One option you might try is a repair pen. I'm not familiar with the particular board you have but I have experience with pcb's.
If the original connection was a solder thru (i.e. the pins go through the board and…"
Mick James commented on ARHEXA's blog post HEXA frame continues: Anti Vibration Motor Mounts"After a brief think about it, I have an idea that might work for your rubber mounts. Firstly I'd like to say that's its a great idea.
Where you have your "T" piece that the mounts are screwed into, you have 2 spare holes either…"
Mick James commented on Earl's blog post Intersting UAV"Did anyone notice that the first thing he did after popping the case open was cross thread the antenna?"
Mick James commented on Chris Anderson's blog post Another cool Kickstarter project: open source autonomous oil-skimming USV"I'm not entirely convinced that an articulated boat would be able to tack at low speed with a heavy drag on the stern. I sail a fair bit (Yes much to the dismay of my wife, I love the toys) and there is always the chance you can stall when…"
Nicholas Winkel commented on Mick James's blog post The Planning Begins"*Update* Blog didn't get approved yet (no picture). I will resubmit with a picture...."
Profile Information
- About Me:
- Electrician from Australia
Used to be an Army Marine Specialist (Boatie)
Married with 3 kids
Enjoy a bit of fishing and hunting
I also like a game or 2 online. I play Aces High II (WWII Flight Combat)
- Tell us a bit about your UAV interest
- My plan is to design and construct an UAV capable of VTOL as well as autonomous flight based on waypoints and environmental conditions. It's primary roll will be to reconnoiter terrain so as to compare it with maps of the area. This is to assist in hunting of vermin and game.
- Hometown:
- Bega
Mick James's Blog
The Planning Begins
Posted on April 6, 2011 at 1:00am 33 Comments 1 Like
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Season Two of the Trust Time Trial (T3) Contest has now begun. The third round was a reliablilty/aerial photography round for both planes and copters, which is now closed. Stay tuned for the next round, beginning soon.A list of all T3 contests is here.
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