231 posts • joined 19 Mar 2012
Paraglider canopies suck for any sort of long distance flight. They lack penetrating power when flying against the wind. The single seat paramotor units already have a hard time with a 5 knot headwind. I've seen one trying to get into a 10 knot headwind, with full power, and barely have any forward groundspeed at all. Also, good luck taking off in one with ANY sort of cross wind component!
Re: In the words of Ron Swanson:
I prefer the description given by Jeff Dunham: Anything I can easily drop-kick over my back-fence, not a dog!
Not fully convinced
as title, but then again, I'm always a bit of a pessimist. I appreciate the article to specifically adress the issue! The reason of my remaining doubt is that CHAV was a relatively low speed vehicle. LOHAN will have to survive a lot more forces and a lot higher speeds.
In any case, there is no way back now. All that remains to do now is to wait and see how it performs. Although I'm sure flights aren't cheap I'm sure there can be more than a single flight if it ever comes to it. (Though a second or more flight might take a while to save up)
Re: Too late but still
I'm not sure glueing the lens directly into the body is going to solve that issue. The lens itself could very well still fog up. Not to mention, fog up on the INSIDE of the lens assembly.
Furthermore, you now expose the lens itself and the plastic of the lens housing to the bitter cold of direct exposure to the outside air. Lets hope the thermal stress doesn't break anything.
I know, I sound like a cynical pessimist. I AM.
Too late but still
I realize this is too late, but the industry standard in these kinds of cases (or in case of sensors and cameras looking into a vacuum vessel as I normally deal with) is to mount a viewing window for the camera to look through, allowing the camera itself to be removable.
Otherwise, keep up the hard work! I'm looking forward to some actual test flight footage!
Meh, sounds like my dayjob...
But it's still no less impressive. The most difficult bit is getting that sort of accuracy without being attached to anything. Newton's third law is a bit of a pain in the neck in these sort of situations.
Re: Early Access
I bought KSP a while ago and thorougly enjoy the hell out of it. Yes, its very rough around the edges, but it's still quite fun. The early version of career mode also reinvigorated my enjoyment of the game. Mucking about in Low Kerban Orbit after having all the doodads just available to you is a nice change of (s)pace.
Fanboi icon: reasons are obivious I'd think :)
Re: Of course they are safe.
How is that ofcourse?? And how is it rediculous? For all we now, the change in gravity could affect how the roots transport certain chemicals to the leafs, causing them too be too acidic or toxic or whatever for human consumption. It's not rediculous, its essential research.
Re: Why's it always KickStarter these days?
Viability after the kickstarter depends mostly on how big the demand is. If the kickstarter itself fills most of the niche market, then there is no viable market left to expand into. Furthermore, does the kickstarter take into account the setup of tools, further development, stock purchase for a next production run (Because after kickstarter you'll have to do an advance run with no idea how many you are going to sell and with no pre-payment to fund it), etc, etc.
In my humble experience as an engineer, the problem with product design is very often not the design itself. Its producability. Efforts have to be made to keep setup and repeat costs as low as possible, independent of the actual material cost. (I've had products where setup and start-up costs per product where higher than material and run costs. Especially small/short production runs suffer from this)
Re: Want a real laugh, ship internationally.
For even more of a laugh, order something from one of the gazillion chinese drop shippers. You'll quite likely get your parcel with SWEDISH!! postage stamps. This made me do a double take the first time I got something in.
Re: Argument seems illogical
Or a flywheel assisted generator. (A large flywheel is kept running by a low power system, storing enough energy to start the diesel generator within seconds and provide power in the meantime) I've seen systems that can take over power generation fast enough and with matched phase so the electrical systems wont even notice.
Re: I wonder where that came from....
Your link is incomplete, and I can't find any reference to it on the Reg at large or the forums.
I hope that bench is stand-up height
Because sitting down behind a laptop with that shelf in the way is going to be a pain.
It's clearly a concept developed without bothering to take practicality or cost into account. As said, why bother building a big heavy expensive shelter that can only charge that particular car? Putting more surface area of cheaper panels on the whole roof of the house and/or shelter is going to be much more efficient.
"Isn't Where 2 better since Google bought it and called it Google Maps?"
Since you are talking about iOS and standalone apps, I'll assume you are also talking about the Maps app. In which case: the latest versions of Google Maps suck hairy donkey balls! They suck to such a degree I don't believe a standalone app would ever dare design it that way. And there are many many examples like it. Siri is the exception that proves the rule.
Re: Think they're against GA?
"Lots of returns in the same area shouldn't be a problem, although ATC may want to put a filter on that area if it gets too much."
Common sense says this shouldn't be a problem, yet the introduction of mandatory mode-s on gliders has shown it IS. Atc can't filter them properly and gets overwhelmed by the many returns. In the meantime most heavy metal TCAS systems filter GA signals, meaning the mandatory mode-s transponder has given us a negative safety benefit.
Re: Key add-on I want to see
Or just incorporate a semi-decent IMU in the system and you can get quite accurate internial navigation with just a bit of math.
Re: Caveat Emptor
"If my dock or car mount breaks then I have to bin the device and buy a new one. It's a proprietary connector - not USB. They clearly hate customers."
I have no idea what you are on about here. The charger connector on ANY TomTom over the last few years has been a standard USB mini B plug. Sure the plug is shaped a bit funny to recess into the housing a bit, but its still standard USB mini B.
Also, China is your friend. You can get a cradle or dock or charging cable for any of the old model TomToms for far cheaper than the original from ebay, banggood, DX.com, etc. The quality will be not all that great, but if it works, who cares.
Across the channel
This malarky has started on this side of the channel (In the Netherlands) as well, with a lot of radio commercials. Everytime I heard one I was thinking: "Why would I want tech that is in most ways exactly the same and in practical use often inferior?". I just don't see DAB as adding anything useful to already existing FM broadcasting.
And thus another stroke
of the saw Facebook is using to cut its own legs out from under it.
FB is really hard at work finding the line between people staying because they don't care enough to leave and people fleeing to find ANY alternative. The problem is, once they cross it, they'll be doomed to ever diminishing returns until the company no longer exists or is sold no matter what they do after that.
Note to travelers
If you ever find yourself in a city filled with smog, know that those surgical masks often seen worn by chinese locals do bubkiss to cut down on particulate inhalation. Very few of them are intended to be used to keep the wearer breathing stuff IN. Most of them keep the wearer from exhaling moisture droplets and other nasties OUT onto objects that don't agree with them.
There ARE special masks designed for very small particulate like smog and asbestos, but they are far more expensive and look different.
Other POI nearby
Kew Bridge Steam Museum.Just a bit away on the other side of the Thames. For those mechanically inclined and interested in steam power it is highly recommended.
AC: "Ladies and gentlemen, please keep your seat belts fastened in case we have to engage in some violent manoeuvres to avoid on coming aircraft. There has been a little glitch in Air Traffic Control that I am assured will be fixed shortly. If any of you have concer..............."
"For fcuk sake! turn left! TURN LEFT!"
If you were to ever find yourself in that situation you should turn RIGHT! As the other sod heading for you should also be doing. (Them's the laws of the sky and the agreement between all airmen) Unless ofcourse you find there is no other option, and pray to god the other guy doesn't turn right instead,
Re: Reinvented cuckoo clock
This was my thought as well. Why not just use a standard timing belt? Cheap, mass produced, made to take a beating, available everywhere, and you could use an old worn one that can no longer do service in a car.
Re: not about the science, just a pissing contest......
NASA can do it, it's just that it's budget and plans aren't decided by scientists or even managers (who are implied to know SOMETHING about that which they manage) but purely by politics. Politics and bullshitting between politicians. NASA has lacked focus and drive after the Apollo program shut down purely because it hasn't been given a consistant goal.
Looking at all the different fields NASA is active in, its still getting an amazing amount of science and development done. But because there is so much sway in what the politicians think NASA should be doing, there is a lot of "startup, development, shutdown" happening that means a lot of promising research is left on the cut-backs spreadsheet.
If the US goverment were to tell NASA tomorrow to: "Get to mars, design and build us a new everything just for this purpose", they could do it. Pretty fast too probably.
Firefox portable on a USB drive
Problem solved. Works wonders in the workplace too.
I've seen completely function gearboxes, ballbearings and all, being formed in 3d printers. We're way past a simple nut and bolt! (This does require a support material that can be removed using a solvent or a powder supported printing process)
Good show indeed old chaps!
Looking very good. The only part I have some doubts about is the contruction of the bayonet closure for the nose section. Those sharp inside corners look perfect for the start of stress fractures.
The surface finish could do with some work as well. I find it to be a bit disappointing, I had expected a slightly smoother finish.
Am I the only one hoping
they won't make a massive announcement for Halflife 3? Just a "ohh, btw guys, we're releasing HL3 in November. Just FYI"
Re: Rocket Science is HARD
Rocket SCIENCE isn't all that hard. All the basic principles are clearly understood and most second year engineering students will probably be able to do the needed maths. Rocket ENGINEERING is where the challenge is!
Re: The short journey is due to the upgreded flight computer
Another reason is the retirement of the shuttle. Because the shuttle no longer needs to visit the ISS, the entire station has been boosted to a higher orbit. The transfer used now was not possible with the lower orbit.
Re: Unintended consequences
Pretty much this. If this plan goes ahead it's pretty much a given a lot of smaller and/or regional telcos will bite the dust or be taken over by the larger companies. I wouldn't be supprised Ms. Kroes is getting some "extra income" from the largest telco companies who only see this as a good way to put even more pressure on the competition. In the end this could end up costing us a lot more. Once the smaller competitors are knocked out the big players are free to jack their prices to astronomical levels.
Fortunately, when it comes to range there is already quite a lot of experimentation from the FPV flyers out there. Most still use a beefed up 35 MHz system, but AFAIK some have started using 2,4 GHz systems. The advantage is because 2,4 GHz is already a widely used frequency, there is a lot of amplifier and directional antenna stuff readily available. I'm pretty sure an off the shelf Yagi is already available to connect directly to the transmitter.
That is why you pull the main breaker (or Ground Fault Interruptor) before starting said fun activities
I do think I predicted this
but good to see you have found the issue and are correcting it. I hope the carbon tube will be strong and sturdy enough for the job. In my experience it can be pretty bendy as well on longer lengths.
I'll also restate my earlier idea, support the rod on 2 locations and put a "runner" on it that can detach from LOHAN once she's got her loins suitably heated. This does mean the length of the rod will be limited to however long you can support it over.
Re: So - cold winter?
Predictions so far point to negligable effects. 11000 tonnes isn't really THAT massive an ammount when talking about global effects
Re: Rudder differential?
Judging from the angles this might actually be a feature (intended) and not a bug. If I'm thinking correctly the inside rudder on a turn will have a slightly larger deflection, thus slightly increased drag. And thus causing a more effective yaw control.
Good observation though. And I hope one of the design boffins can grace us with an answer
I shall raise a pint to the design boffins, a lot of thought seems to have gone into the matter indeed!
Re: The Solution
Unfortunately the western world is still stuck in the "radiation bad WHHHRRRBBLLGLBLLG. just don't use nuclear power. It's bad. WHHRBBLBLGLGLBBLLFBLFBLFBBLBLBFBFBBBBB" and thus very few if any investments are made into thorium reactor development. Meanwhile China and India are well on their way to developing commercial thorium plants.
I had a shiny bronze badge. Then I lost it again. I think I should be well over the 100 posts in the last 12 months barrier...
I won't be around to watch it, as I'll be scampering off east towards the Czech Republic on Saturday. If it does go that far, give me a headsup :-P
Re: Legs on fire?
I think most of the smoke and fire you see is actually the exhaust of the turbines powering the turbopumps. (If you watch closely you can see 2 plumes of fire parallel to the main engine exhaust) The legs do probably get "a bit warm". But I doubt they'd catch on fire or even heat enough to call them hot (As that would jeopardise their structural integrity)
Re: Photograph THAT !!!
Send a whole load of envelopes and draw a single frame of an animation on each. That should get them entertained :-P
Hams are useless...
until the military finds out it can't even get it's own comms grid working. As happened recently in a large military exercise in the Netherlands. A load of hams had been invited to "play along" as being the "civilian aspect/backup". They had pretty much been told to sit in the corner, shut up and stay out of the way.
By the time the actual exercise started the army boys found out their network wasn't working and most of their shiny comms equipment was pretty much useless. The hams in the meantime had gotten their cosy little corner all setup, their radios working, a comms network pretty much set up and were happily chatting away with most other stations (the last few getting online soon after). Even managing to make contact with ground units the military had thought were unreachable or out of range. So hurridly the army had to use this mismash ham network to get their forces coordinated.
(Most of the exercise was then run through ham radios as the army system kept suffering mental breakdowns)
I'd also like to add the following: Well before launch, stick all parts and payloads in a low vacuum chamber to dehydrate. If at all possible, keep the chamber nice and warm. Keep it there for as long as you can. An atmospheric pressure box with a good amount of dessicants would also work. Transfer it all to a thermo/cooler box with a load of dessicant bags (Silicagel would probably work best) and keep it all at a nice warm temperature. Don't take anything out until it is needed.
This way all parts will be bone dry. Thus much less chance of lenses developing condensation and such.
I have doubts
I've voiced my doubt before, especially about the line getting entangled around the chute. With a bit of experimenting and fiddeling to choose just the right amount of slack it could work, but it'll still be pretty error prone IMHO. If you do go with the hollow bearing idea, keep in mind you will also have to add a swivel to the pull line, spin of the chute would otherwise still wind up the string, causing it to bunch up and pull in.
As for the oven timer, I agree it would be a good idea to redo the tests after a good trip through the freezer. There is a good chance the cold would alter the properties of the clockspring enough to seriously throw off the timing.
I know mechanical FEELS more reliable over electronics (With things like flat batteries and such) but "the industry" has long since moved just about everything to electrical systems as far as I see. I simple 5v electronic timer with a single solid state relay, fed by a volt scavenger circuit (ala minty boost or similar) from a pair of penlites has a lifetime measured in years, while being pretty darn reliable.
Re: >"one micron long and 20 nanometres wide"
14nm is only state of the art in currently applied fab tech. Ramp up for the next node in feature size is already happening. I wouldn't be supprised if we get sub 10 nm production happening within 2 years.
Re: I expect to hear the MMCC co2 believers now
roughly the same amount of flooding maybe a decade ago afaik.
Re: Straight up and out in 10 minutes??
AC at 08:09
There is a very good reason for you NOT to do any of those things and its exactly the same incentive the data center guys have. Lowering your utility bills. If you want to keep the tap running, be my guest,most of the UK won't run out of water soon. Especially not if it's just your little pipe that's leaking a bit. (Compared to most industrial users, even at full blast, your home tap uses a TINY amount of water)
If you really think people keeping a 60 watt light bulb burning is going to matter much in the grand scheme of things then go ahead and ignore the industrial complexes whose consumption is measured in MegaWatts running 24/7/365 for several decades.
It WILL make a difference to you as a person. Your electricity and water bills will be through the roof. Which is exactly the RIGHT incentive to get people to use less resources.
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