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A letter with 170 questions on the Government's approach to Brexit negotiations, including the future of employment rights in the UK, was sent to Brexit secretary David Davis from Labour shadow cabinet members on 11 October 2016.
News: HR and legal information and guidance relating to the European Union.
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Blue Valentine Card
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Holiday jobs that bring in bigger bucks
I worked a part-time job doing seasonal holiday help at a major department store once. Actually, I should say I did it four times – as in I lasted four days on the job.
Yeah, working my fingers raw peeling thousands of tiny price stickers off tags and crouching on my knees sorting stacks of clothing was bad enough. But it was the frazzled, yelling managers and brutally rude customers that finally did me in.
If you're tough enough to work retail for the holidays, I bow before your greatness.
But if you're looking for a gig outside the sales floor, Forbes magazine has compiled the best-paying ones. The salaries given are national estimates, so you can expect them to be a little lower in the Buffalo Niagara market, but it's still a good indication of where you can expect to find the bigger bucks.
• Marketing coordinator, $52 per hour. Advertisers go into overdrive this time of year.
Holiday ad campaigns are starting earlier than ever (Kmart aired its first holiday commercial in September), so if you're looking in this field, you'd better get cracking. As a coordinator, you'd help on seasonal campaigns and help organize branding events.
• Seasonal recruiter, $25 per hour. Who do you think is filling all those seasonal jobs? These folks help recruit, vet and hire workers.
• Production designer, $21 per hour. Someone's got to design all those holiday cards and party invitations.
• Social media assistant, $17 per hour. You spend all your time on Twitter and Facebook anyway, why not get paid for it?
In this position, you'll engage customers on a company's Twitter feed or Facebook page. You might field questions, thank customers for positive mentions or apologize for (and help address) negative feedback. You'll also use each medium to advertise the company's products and services and build its brand.
• Marketing research surveyor, $17 per hour. These are the people who collect and evaluate information about consumers to help companies understand consumer trends. They're the ones trying to figure out "What's your household income, how do you spend it, and how can my company or client get a piece of it?"
• Seasonal operations professional, $17 per hour. This person is at the heart of "back-of-the-house" operations, supporting a company's employees, customers and vendors.
• Customer service reps, $15 per hour. Assist customers with questions and complaints over the phone, via email and social media, or during live online chats.
• Photographers, $14 per hour. Whether you're taking photos at holiday parties, taking family portraits for holiday cards or shooting commercially for holiday catalogs or campaigns, your skills will be in higher demand.
• Decorator, $14 per hour. Stores need help with window displays, restaurants need to be transformed into magical holiday destinations, and companies need people decking their halls (and lobbies).
There are even regular people (seriously, this is true) who hire interior decorators to put up their Christmas trees, decorate their homes and string lights on their trees outside. You'll be needed to take it all down again when the season's over, too.
email: firstname.lastname@example.com or call MoneySmart at 849-4612. Follow me at www.Facebook.com/DiscountDiva.


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|15 Feb 2012
South Carolina
Random Horizontal Lines On Laptop
For the past day random lines have been appearing on my desktop. The following picture is not my laptop but I found this image and its the same thing that happens on my computer.
The lines appear in different spots each time and will stay for a short amount of time. If somebody could help me find out whats wrong with my laptop it'd be much appreciated, cheers!
Laptop INFO:
-Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601)
-System Model: HP 2000 Notebook PC
-BIOS: InsydeH2O Version CCB.03.61.11F.34
-Processor: AMD E-450 APU with Raedon(tm) Graphics (2 CPUs), ~1.6Hz
-Memory: 4096MB RAM
-Driver Model: WDDM 1.1
-Current Display Mode: 1336 x 768 (32 bit) (60 Hz)
-Chip Type: ATI display adapter (0x9806)
-DAC Type: Internal DAC(400MHz)
-Name: AMD Radeon HD 6320 Graphics
-Motherboard: Hewlett-Packard 3577
-HDD: InsydeH2O Version CCB.03.61.11F.34
-Driver Version: 8.861.1.2000
-Driver Date: 7/5/2011
If you need any additional info to help me with this problem just say so, cheers!
|My System Specs
|15 Feb 2012
It sounds like a bad LCD panel, video cable or the connection. Power on the computer and keep tapping the F8 key then select Safe Mode with Networking. See if the problem appears on screen. You can also choose Low Resolution VGA mode (or something like that) from the F8 menu. That will help determine whether it's hardware or software related.
|My System Specs
|16 Feb 2012
Try to reinstall your graphics driver and check your screen at different resolutions in safe as well as normal mode.Also try changing the themes and check if random lines still appear.If the lines still appear randomly then its a sign of LCD screen going bad.
|My System Specs
|Thread Tools
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Horizontal Lines!
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Dell Latitude D600 Display Flickering (random horizontal lines)
Hello all. I have a Dell Latitude D600 and at random times the display will flicker with horizontal lines. I can sometimes agitate it by gently twisting the LCD and it will flicker. I've done some research before and thought the problem would be the flex video cable, which I ordered and...
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Hi, I have a Laptop of 4 years old.Windows 7 is not opened so so that i went to a technical person he told me Hard Disk Problem.So i purchase the new hard disk. that also when i try to install BIOS will open good and i am trying to install the Windows software its showing the HORIZONTAL LINES...
|General Discussion
gtx 460 horizontal lines
hi folks I recently upgraded my old 9600 GT for something with a little more oomph - a GTX460. my card has been performing swimmingly until recently - ive noticed strange, wavy horizontal lines/flickering on screen in dark areas - particularly in games. this is usually accompanied by...
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I've noticed in games that there are faint horizontal lines moving across (bottom to top) my monitor. Its not a big deal but once I notice them, it gets to be really annoying. I haven't tried another monitor because I don't have access to another one at the moment. It seems to help a little if I...
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How to get rid of horizontal lines on my monitor?
There are vertical lines on my monitor that are showing ... they are not there all time and are showing from time to time ... they are showing for about 10 sec and after that my monitor shows me no signal :( pls help and sorry for my bad english :D ...the problem is on my other pc so system...
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No way, Jose? Spurs boss Pochettino pictured having lunch with Alex Ferguson
Tottenham manager Mauricio Pochettino has been photographed leaving a dinner with former Manchester United manager Alex Ferguson, fuelling rumours that the Argentine tactician could be lined up for a shock move to Old Trafford this summer.
Influential United director Ferguson was spotted with Pochettino outside Scott's restaurant in London, with the Spurs assistant coach Jesus Perez also believed to be in attendance at the meeting.
United boss Louis van Gaal is under huge pressure once again after his side's 3-2 defeat at West Ham on Tuesday night left them hoping for a miracle to secure a top four finish in the Premier League, as they look to win their final game against Bournemouth and hope Manchester City slip up at Swansea on Sunday.
Anything less than a top four finish may well signal the end of Van Gaal's turbulent two-year reign at Old Trafford, even if he leads his side to FA Cup final success against Crystal Palace at Wembley on May 21st.
Ferguson's meeting with Pochettino is intriguingly timed, coming days after the Spurs boss confirmed he had verbally agreed a new contract with the north London club, but confirmation that he has signed the deal has not been forthcoming.
The United hierarchy are known to be admirers of Pochettino's work, with Labour MP for Tottenham, David Lammy, revealing details of his recent conversation with Ferguson earlier this year.
"About six weeks ago, I sat next to Sir Alex Ferguson at a dinner in support of grass-roots football abroad. He said to me, "I think you guys have got the best manager in the Premier League." Alex Ferguson said that," stated Lammy.
With opposition to Jose Mourinho's possible appointment as Van Gaal's successor evident among the United hierarchy, they would clearly relish the chance to attract the youthful Pochettino to their club and may sense that this is the moment to try and strike.
Until Pochettino signs his new contract, United and Ferguson may suspect they have a chance to snare one of the most coverted coaching talents in the game, with the prospect of the coach who led Tottenham's most sustained title push arriving at Old Trafford this summer certain to enthuse supporters who have been calling for Van Gaal to be axed.
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All Android applications categories
YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos. The company is based in San Bruno, California, and uses Adobe Flash Video and HTML5 technology to display a wide variety of user-generated video content, including movie clips, TV clips, and music videos, as well as amateur content such as video blogging and short original videos.
This app consist of
YouTube what is it?
YouTube-why is it popular
Benefits of registering
High school students
Make a YouTube video
Pros and cons
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Competition reviewed and more
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** Giving low rating won't improve the app. Low rating or vague comments won't help us know what you find missing in the app. If you think the app has potential, start a dialog! Email us and help us take the app to the next level. Your email will be promptly responded to and acted on!
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text: Hi Vesa, > I've found out a little late that the 7.2 series is supposedly some sort > of a "technology preview" branch. While I think it's totally > irresponsible and moronic for the GHC devs to release a point release > that's not supposed to be widely used [...]. actually, GHC 7.2.x is quite stable and it's perfectly alright to use it in production. It's been dubbed a "technology preview" because the compiler breaks backwards compatibility in ways that require library authors to update their code. Those who don't want to deal with that situation ought to stick to 7.0.4. However, those incompatibilities are not going to disappear by themselves. The 7.4.x release is not going to be different in that regard. > We'll have to think about if we really want 7.2 or do we wait for 7.4. It comes down to the question: are you willing to patch lots of packages to fix compilation? If you don't want to do that, then you'll be stuck with 7.0.4 for quite some time. If you don't mind patching packages to fix compilation, then updating to 7.2.2 right now is a fine choice. Take care, Peter


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text:
White House honors Buffalo City Court judge for drug court initiative
Buffalo City Court Judge Robert T. Russell Jr. was honored Monday as a recipient of the Advocate for Action award of the White House office of National Drug Control Policy bureau.
Russell, who is head of the Buffalo City Court's nationally recognized Drug Court and its Mental Health Court and founder in 2008 of what was then the nation's only Veterans Treatment Court, was honored for "astounding efforts and groundbreaking thinking" in efforts to return first-time offenders to the community. Monday's ceremony included a private tour of the White House.


text:
Liquidity and the Law of One Price: The Case of the Futures‐Cash Basis
- Abstract
- Full Text PDF
- Full Text HTML
- Author(s): RICHARD ROLL, EDUARDO SCHWARTZ, AVANIDHAR SUBRAHMANYAM
- Published: Sep 04, 2007
- Pages: 2201-2234
- DOI: 10.1111/j.1540-6261.2007.01273.x
Deviations from no‐arbitrage relations should be related to market liquidity, because liquidity facilitates arbitrage. At the same time, a wide futures‐cash basis may trigger arbitrage trades and, in turn, affect liquidity. We test these ideas by studying the dynamic relation between stock market liquidity and the index futures basis. There is evidence of two‐way Granger causality between the short‐term absolute basis and liquidity, and liquidity Granger‐causes longer‐term absolute bases. Shocks to the absolute basis predict future stock market liquidity. The evidence suggests that liquidity enhances the efficiency of the futures‐cash pricing system.


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Horse Farm located between Holt and Kearney, Missouri
Private Eventing & Pony Club training facility
Napier Performance Horses, LLC is moving to Kearney Missouri! Lessons and training will be starting up again Fall 2015. We specialize in performance…
Offering premier Western & Hunt Seat training & instruction out of Kearney, MO. Heavy emphasis on showing local and national shows.
Breeding quality arabians since 2001!
Just have a few registered Doc Bar mares that I breed.


text:
Alza among Perodua models to receive locally built transmissions.
Japan's Daihatsu is building a RM222 million ($73.7 million) plant in Malaysia to produce electronic automatic transmissions for local auto maker Perodua's range of vehicles. Production is to begin in November with an initial output of 150,000 units a year. The Malaysian Investment Development Authority says the factory is being built by Akashi-Kikai Malaysia, a joint venture among Daihatsu, Japan's Akashi-Kikai Industry and Perodua. The new JV is 51%-owned by ...
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There were enough good things in the scrimmage for Rick Neuheisel to remain relentlessly optimistic. Thinking about relentless that is exactly how the defense performed yesterday and Neuheisel poin...
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Multi-core microcontrollers target embedded applications
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San Jose, Calif. Renesas Technology America, Inc. has introduced five SuperH 32-bit microcontrollers that use multi-core technology to achieve the high levels of performance required by many embedded system applications such as consumer products, industrial equipment, and car audio and navigation systems.
The SH7205 and SH7265 devices incorporate two superscalar SH2A-FPU CPU cores and a comprehensive set of on-chip peripherals that includes USB, ATAPI, and image processing engine functions. When the dual-core microcontrollers are operating at their 200-MHz maximum operating frequency, each CPU delivers 480 million instructions per second (MIPS) processing performance in the Dhrystone v1.1 benchmark, and 400 mega floating point number operations per second (MFLOPS) floating-point operation performance,
One of the main benefits of putting multiple CPU cores in a single chip is increased device performance because the CPU cores can execute lines of software code in parallel, said Renesas. The multi-core ICs for embedded systems previously introduced have been aimed primarily at image processing and similar multimedia products with heavy processing loads. In comparison, the SH7205 and SH7265 microcontrollers are general-purpose devices that target a broad span of applications requiring high-speed real-time control and processing performance equivalent to that of a digital signal processor (DSP) chip.
The internal bus system uses a CPU-specific multi-layer structure. A 4-layer configuration provides two layers for CPU use and two for direct memory access controller (DMAC) use. This prevents time from being wasted while the bus is in use by the other CPU, for high-speed real-time processing, said the company.
For greater flexibility, the CPU cores can operate on different operating systems (OSs) or the same one. If one CPU core runs the uITRON OS, while the other runs the uClinux OS, for example, they can execute completely different programs. In addition, the two CPU cores can communicate directly with each other. Each CPU can check the status of the other one, and they can exchange data using memory provided for that purpose.
The SH7205 and SH7265 chips also incorporate a number of peripheral functions that reduce the need for external parts. They include a USB v2.0 high-speed (480-Mbits/s) specification interface, an ATAPI interface, and other various interfaces. The devices feature a 2D graphic engine and a digital video input pin for graphic processing, and WQVA-size (480 x 234-pixel) and QVA-size (320 x 240-pixel) analog RGB output pins for image and video output processing.
Other on-chip functions include a 5-channel multifunction timer unit (MTU) suitable for motor control systems, a 2-channel CAN controller, an 8-channel 10-bit A/D converter, a 2-channel 8-bit D/A converter, a watchdog timer (WDT), and a 14-channel DMAC with 2-dimensional addressing capability for speeding up video applications.
In addition, the SH7265 provides an encoding accelerator for Advanced Audio Coding (AAC) as the audio data compression method. This function can be used for high-speed hardware implementation of music data or similar AAC file creation.
Customers can use currently available compiler, assembler, and linker products as a system development environment for the SH7205 and SH7265 microcontrollers. Renesas is also developing an enhanced version of the E10A-USB emulator with multi-core support and a dual-core OS (uITRON HI7200/MP). This OS has an inter-CPU communication function that eases the implementation of application software and enables current software resources to be used in dual-OS operation, said Renesas.
- The 200-MHz R5S72050W200BG (-20°C to 85°C) is priced at $21.
- The 200-MHz R5S72650P200BG (-40° to 85°C) is priced at $22.
- The 200-MHz R5S72651P200BG (-40° to 85°C) is priced at $23.
- The 200-MHz R5S72652P200BG (-40° to 85°C) is priced at $23.
- The 200-MHz R5S72653P200BG (-40° to 85°C) is priced at $23.
Product information: SuperH series and specs (Click on the download pdf at the top of the page and scroll to page 4 for key specifications.)
Renesas Technology Corp., 1-408-382-7500, www.renesas.com


text:
Strong core equivalence theorem in an atomless economy with indivisible commodities
We consider an atomless exchange economy with indivisible commodities. Every commodity can be consumed only in integer amounts. In such an economy, because of the indivisibility, the preference maximization does not imply the cost minimization. We prove that the strong core coincides with the set of cost-minimized Walras allocations which satisfy both the preference maximization and the cost minimization under the same price vector.
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|Date of creation:
|15 Aug 2011
|Contact details of provider:
| Postal: Postfach 10 01 31, 33501 Bielefeld
Phone: +49(0)521-106-4907
Web page: http://www.imw.uni-bielefeld.de/
More information through EDIRC
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Shapley, Lloyd & Scarf, Herbert, 1974. "On cores and indivisibility," Journal of Mathematical Economics, Elsevier, vol. 1(1), pages 23-37, March.
- Inoue, Tomoki, 2011. "Indivisible commodities and an equivalence theorem on the strong core," Center for Mathematical Economics Working Papers 417, Center for Mathematical Economics, Bielefeld University.
- Mas-Colell, Andreu, 1977. "Indivisible commodities and general equilibrium theory," Journal of Economic Theory, Elsevier, vol. 16(2), pages 443-456, December.
- Inoue, Tomoki, 2005. "Do pure indivisibilities prevent core equivalence? Core equivalence theorem in an atomless economy with purely indivisible commodities only," Journal of Mathematical Economics, Elsevier, vol. 41(4-5), pages 571-601, August.
- Roth, Alvin E. & Postlewaite, Andrew, 1977. "Weak versus strong domination in a market with indivisible goods," Journal of Mathematical Economics, Elsevier, vol. 4(2), pages 131-137, August.
- Yamazaki, Akira, 1981. "Diversified Consumption Characteristics and Conditionally Dispersed Endowment Distribution: Regularizing Effect and Existence of Equilibria," Econometrica, Econometric Society, vol. 49(3), pages 639-654, May.
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text:
Sears Holdings Corp. said it narrowed losses in the fourth quarter and for the year, but that wasn't enough to keep Wall Street happy as its shares dropped more than 5 percent Thursday morning.
The Hoffman Estates-based retailer posted a net loss for the year of $930 million or $8.78 per share. A year earleir, the retailer posted a net loss of $3.14 billion or $29.40 per share.


text:
Hi Mickey. I should preface this by saying I am a Sikorsky engineer, working in the loads group. This has been an informative post for me, and I learned some things about autogyros that I didn't know. Some comments:
1) On the issue of phase lag, you mentioned early on rigid rotors have slightly less than 90 deg phase lag. This of course depends on the flexibility of the rotor (where the virtual flapping hinge is). For some full scale rigid rotors it can be less than 40 deg.
2) That flapping hinges only alleviate control loads is untrue. They alleviate blade flapwise moment (you call it torque) by an incredible amount, just like lead lag hinges do for edgewise moment.
3) High servo rate is not needed for a servo tab rotor (like Kaman helicopters). The swashplate angle does not change 1/rev as you imagine, its actually the same as conventional swashplate. The control rods go to torque tubes in the blades which go out to the tabs at 3/4 rotor radius. The tabs go up and down 1/rev because the rotor is turning. The main advantage is that it reduces control loads. Now if you wanted to put servos in the blades, then they would have to be fast. Also, I was under the impression they did not flex the blades. The blades are on a feathering bearing and have a feathering spring which tries to center the feathering at mid collective. This prevents the tabs from having to be up for positive collective, which would reduce lift coefficient of the airfoils in the tabbed region.
3) Following rate...What you are describing as following rate seems to me to be control power. In one post you suggested it's how quickly the rotor reaches steady state. The reason I disagree with this is that given a small cyclic input the rotor will flap only a small amount, and if it reached that state instantaneously, that is not a controllability problem. Now if a small amount of cyclic input produced a large moment that would be a problem. I experienced this first hand when I made a flybarless CP piccolo with a rigid hub and flapping hinges, back in the day. Version 1 had no tip weights and was unflyable; too much control power. 5-7g of lead in the LE of each tip did the trick, and it flew excellently.
4) I've tried flybarless on the eco 8 with heavy blades. The main difference I found, is that the helicopter felt less damped. After putting in a roll input it would continue to roll after you neutralize control, for about 1s. While it was certainly flyable, it took more concentration, so I stuck the flybar back on. With the piccolo I di not get this feeling, I suspect due to the flapping hinges.
5) Gyroscopic precession: Yeah I know its a headache, and many confuse it as being the source of the 90 degree phase lag. On rigid rotors, you will get a roll moment when the aircraft has a pitch rate and vice versa. This effect is of course separate from the whole asymmetry of lift issue.
The reason I've been reading all this is I'd like to get into autogyros. Maybe I can turn the scraps from my old flybarless piccolo into one. My goal is to some day make a cartercopter type model, but currently I have too many other projects.
Thanks again for the informative posts.
Last edited by Erez-E; Jan 12, 2008 at 10:10 PM.
First thing, great to have you commenting.
Let me try to clarify some things that may have come across incorrectly.
DC control
Ive had this question on my mind for sometime. Hope it doesn't sound too dumb.
Is DC control and weight shift control essentially the same thing for an autogyro?
Not sure but think you are right. By controlling the tilt of the head you create an offset/arm between the lift force and CG resulting in a torque to tilt the craft. If you shift the weight you would get the same result I guess.
I don't think weight shift and DC are the same thing. Consider a full sized "bensen" type with DC control. There's nothing to weight shift against, you have to make the rotor move to control.
However with a three bladed model with stiff flapping hinges I believe there is a component of weight shift involved. But you'd have to be careful in determining the exact amount, because when you weight shift, you use the weight shift to tilt the shaft as well which is putting in cyclic.
Probably hard to determine just how much is cyclic and weight shift without a careful study.
There are two pictures below. The first is a Benson with an over head bar connected in order to tilt the spindle. This looks like weight shift to me, the whole machine swings under the rotor.
The second picture is a DC Benson. But isn't the same thing happening? The only difference is that the swinging of the craft under the rotor is accomplished through a system of linkages.
Weight shift works by moving the center of mass first then the rotor follows. In the Bensen you move the yoke while the body remains in the same attitude, the rotor then tilts to a new position and the body swings behind. If weight shift were being used the rotor/yoke would remain in a fixed attitude and you would move the whole mass of the fuse first then the rotor would tilt to follow.
You're tricking yourself into thinking that the rotor is a solid immovable object that you can push against to affect moving the mass of the fuse. It isn't, the rotor is teetering so you can't apply any torque to it so there is nothing to push against to move the center of mass of the fuse.
It would be weight shift if you moved the pilot around like a hang glider but when everything is fixed there's no way to move the mass around.
And both of these are DC bensens, the first one has a big gimble on the top that tilts the head, the second one is the later design that does away with the expensive ball joint and uses the current mechanism. Both of these are described in Bensen's book. Bensen describes how these are identical. However the control movement was backwards on the earlier one and there were no control feedback forces to tell the pilot where the rotor was. Bensen crashed once not knowing the rotor postion, so the later design incorporates a feedback spring to give pilot feedback.
Coning again
Now I have finally a well-behaved Cierva C.6 in the air I am trying to understand what were the problems before. My first try had been a hub flexible enough to allow for some flapping up and down. I do not know whether it would have worked properly - the problem was that the blades could flap down and hack the aft fuselage to pieces. So I reinforced the hub to make it more rigid; my balsa blades had a coat of fiberglass to suppress any coning and the differential lift should only result in an up-elevator reaction.
To my suprise I had an autogyro which was almost uncontrolable due to a distinct tendency to roll to the left. I put in cheapskate delta hinges, too floppy in the first try, got quite a bit of coning which resulted into a roll tendency into the advancing blade. (That bit is clear to me.) I reduced the floppiness, have *slight* coning now and a perfectly well-behaved plane.
Now my interpretation is that the coning results in a tendency to roll into the advancing blade which now nicely counterbalances the tendency to roll into the retreating blade. I am still not sure where that former tendency comes from. My explanation would be that the induced drag of the blade tips plays a roll here since the plane will fly through the turbulent air. That way, the front half of the rotor disc will lose some lift the back half will not lose (since it's moving away from the turbulent air). With precession that would mean the left (retreating) side will have less lift and the plane would roll into this direction which is what I had experienced.
Now why do not all gyros have this problem? My Cierva has a mast angle of only five degrees which could be unlucky enough to make the front part of the rotor disc pass through its own drag.
But maybe all this is nonsense and there's a better explanation? What do you think?
I'm sure turbulence, etc play some minor part, but the big picture is just plain old physics. A very rigid rotor will cause the advancing blade to rise later in the cycle (this is called the phase lag) (how much later depends on how rigid it is), so the effect is to get a roll to the retreating side and a nose up pitch.
When the rotor cones, the blade over the nose has more pitch with respect to the oncoming air and sees more lift, it responds by rising up later in the cycle (the phase lag amount) (on the retreating side), causing a roll to the advancing side.
When you have a rotor that is uncontrolled, getting the flapping stiffness correct so the phase lag is close to 90 degrees so you don't get the advancing blade roll to the retreating side, but not so floppy that you get excessive coning and get roll the other way from coning induced roll is the great balancing act and probably the reason getting one to fly is so difficult. There are some small single uncontrolled rotor models (albeit with big aerodynamic damper fuselages) but very few large single uncontrolled rotor models around, probably for this reason.
The modern solution of course is to use cyclic pitch, either by tilting the spindle or using a swashplate. This puts in the correct amount of nose down and/or left right to get the rotor to trim regardless of how much coning.
Note that you still want to get the coning as low as possible because the roll you get because of it will make the trim change at different speeds, different G loadings (Iike when you pull up to flare for a landing, having the roll trim change is not pleasant), and different aircraft weights.
As a footnote my original designs didn't have the head stiffener, they took 10° of roll trim to fly level and they changed trim under different loads. It really was a bit of a challenge. I added the head stiffener (and tip weights) and got the rotor to flatten out and now it flies with level aileron trim and doesn't change trim when you pull up, flare etc.
There are two ways to get the coning under control without resorting to stiff flapping hinges (which as we know cause other bad problems).
1) Increase the rotor RPM
2) Add mass as far out on the blades as possible.In other words tip weights.
Both of these increase the centrifugal force (or centripital if you are an academic purist, but don't bother me with it because I know the difference and I'm using the common term) so the blades run flatter.
good luck.
Thanks for sorting it out for me. With a scale gyro, I'm stuck with the number of blades the original had and as I understand it a 4-blade rotor will always rotate at slower rpm than a 2-blade or 3-blade rotor. But as I am very happy with the this baby is flying now I won't change anything, of course.
Sure I do, I only never found such an approach very interesting. Just imagine: You build a proven design and it flies. Not very thrilling, since it's a proven design, right? Then again, say you build a proven design and it does *not* fly. Obviously you've fouled it up while others have succeeded. How depressing.
On the other hand, you can start something different: If it flies - cool! If not - well, nobody has really expected it to work. With this philosophy, I have not only learned to fly (basically) on a triplane, but I also have experienced some spectacular crashes.
Having said that, I find myself much in favour of autogyros *without* direct contol and with stubby wings now. They keep things easier (no high-load servos or stuff), look cooler (IMHO) and above all, it's much easier to see whether the plane banks.
now I'm confused.
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