* Posts by James Hughes 1

2050 posts • joined 12 Jun 2009

SpaceX makes nice with U.S. Air Force, gets shot at black ops launches

James Hughes 1
Silver badge

Re: Landing a rocket on its jet is impossible.

Should that be exhaust rather than jet?

But notwithstanding that, a number of companies have demonstrated vertical launch/landing - Armadillo aerospace, Masten Systems, Blue Origin. SpaceX are the only ones at the stage of trying to return a booster though. I suspect BO might be the next ones.

It's an idea that has come of age.

2
0

Elon Musk: Wanna see a multimillion-dollar rocket EXPLODE? WATCH THIS

James Hughes 1
Silver badge

Re: Quite a few incorrect posts above and bad facts in article

7.8% still gives a thrust to weight ratio > 1, so not able to hover.

0
0
James Hughes 1
Silver badge

Quite a few incorrect posts above and bad facts in article

Hydraulic fluid ran out about a minute from landing, it's an open system, so fluid is lost during use. Tanks wasn't big enough (or carrying enough fluid). Grid fins locked hard over when they ran out.

Parachutes have already been tried by SpaceX and sucked, hence they are trying this hoverslam landing approach. Parachutes also add unnecessary weight . Stage already has grid fins and thrusters for maneuvering, plus gimballed engine nozzle, but is incapable of hovering (cannot throttle engine low enough)

tbh, the phrase catastrophic is also wrong. A catastrophic result would mean no data was received in this test flight, meaning it was wasted, whereas there is a clearly a lot of data and in many ways this was a successful TEST.

Next test in three weeks.

6
0

Crap broadband holds back HALF of rural small biz types

James Hughes 1
Silver badge

Re: Pity the poor rural business

I don't wear a smock, or carry a pitchfork.

But I do live in a rural location, because I couldn't afford to live closer to work.

Within 10 miles of me I have a large windfarm, supplying you power, some world class companies supplying you food, sheds, play areas, a CFC disposal yard, friends who supply large amount of lamb for you to eat, huge amounts of potatoes for you to convert to chips, companies that supply computer equipment worldwide, a large biodigestor under construction (power and ethanol I believe). There's is also the Washes, a flood relief system for built up areas upstream, which stops you getting flooded.

All of the above work better with decent broadband, farming especially which is getting more and more reliant on web access.

Please think outside your own mindset before posting.

2
0

SpaceX in ROCKET HOVERSHIP PRANG: 'Close – but no cigar,' says Musk

James Hughes 1
Silver badge

Musk does apparently play KSP.

1
0
James Hughes 1
Silver badge

Re: Google? @Alqan Brown

The centre core of the F9Heavy will be travelling too fast for return to landing site (without affecting payload too much), and will therefore need to be barge landed, if recovered at all.

0
0
James Hughes 1
Silver badge

Re: Not a bad result!

It's debatable whether even at terminal velocity the rocket could have sunk the barge (or even punctured the 20mm steel deck). The engines act as crumple zones, and the whole thing doesn't weigh much empty anyway. Top speed of a couple of hundred MPH with no braking burn, but with no braking burn it would miss the barge anyway.

0
1
James Hughes 1
Silver badge

It was foggy as well...

Lights not much help. IR cameras have been suggested, but they would be swamped by the heat from the engine plume.

TBH, the telemetry is what they need, video would be a bonus anyway.

Original landing time would have been in daylight had it not been for the scrub on Tuesday.

2
0
James Hughes 1
Silver badge

Google?

All the questions above can be answered with a very quick Google search.

The Merlin engines are said to be capable of 40 cycles without servicing, and Musk has stated that even the servicing after that is only a few replacement parts. They were designed with reusability in mind.

Benefits of reuse are huge, the 1st stage alone costs >$50M. They are aiming for rapid turnaround (a day or so), so that a huge saving from throwing the stage away each launch.

Currently trying to land on barge, intent is to return to launch site (except for F9H centre core which will need a barge landing)

7
1

Nvidia flops out TERAFLOP X1 for self-aware cars

James Hughes 1
Silver badge

Re: Self drive

Foggy round our neck of the woods yesterday, quite surprising the number of cars that either have only side or no lights on at all. Note, sidelights are generally inadequate round our area as they get muddy very quickly and are pretty useless in that state.

Pretty sure a car that turns lights on automatically would be of immediate benefit given the parlous state of the driving around here.

2
0
James Hughes 1
Silver badge

Re: Raspberry Pi v2?

Much much too expensive. This is going to be a big piece of silicon, and that means expensive.

1
0
James Hughes 1
Silver badge

Re: I wonder

And it will be a very expensive lump of silicon.

2
1

Renault Captur: Nobody who knows about cars will buy this

James Hughes 1
Silver badge

Re: Looks Good For Dogs

I'd keep the Jazz. I've been impressed with my 02 plate Civic 1.6s petrol, 220k miles, still going strong. Do all my own servicing, and have done for last 5 years. Probably needs new clutch (still original) and cam belt (on second), but TBH, I'll just run it until is dies a death. No point in trading in.

1
0

Sony-blasting Lizard Squad suspects quizzed by UK and Finnish cops

James Hughes 1
Silver badge

Had a terrible time

Sorting out the youngest son's PS3 to work on PSN, with a sub-account of a parent account.

Assumed it was this hack at first, but now fairly sure it's just a completely shit system designed by someone who never actually tried to use it.

2
1

Tesla parades sleek model body and fab batt at Roadster fans

James Hughes 1
Silver badge

Quite. Lots of people claiming the mileage claim is cobblers, yet I have read of quite a number of S drivers in very cold countries who are very pleased with the range performance. I will remain hopeful until tests show it one way or another.

Cold weather also reduces the range of ICE cars as well btw. It really isn't an easy thing to quantify. http://www.fueleconomy.gov/feg/coldweather.shtml

1
1

Proxima and Ultima: AI, hard sci-fi and multiverse – ALL GOOD. Romans – not so much

James Hughes 1
Silver badge

Re: I very much doubt that the publisher is responsible,

Calm down Bleu.

We get it, you don't like his books. No need to go on about it, you'll end up being more like Baxter than you think.

All writing is theft, in one way or another.

Or something.

2
2

Cambridge boffins and Boeing fly first hybrid airplane over British skies

James Hughes 1
Silver badge

Re: Good video

Agreed. Pity some the the commentators didn't watch it before commenting.

2
1
James Hughes 1
Silver badge

Did commentards not listen to the video?

The reason this is more efficient than standard was extremely well explained in the accompanying video. Those people wondering where the efficiency is coming from should probably watch it before commenting.

4
2

Purple glistening plasma, you say? Orion plummets back to Earth

James Hughes 1
Silver badge

Re: So when do we hear about the SCIENCE?

Patience is a virtue. I think you need to give the people with the the data a bit longer than a couple of weeks to sort it all out.

1
0

30,000 people buy a box of BOVINE EXCREMENT

James Hughes 1
Silver badge

Re: CAH-rap

Best played after a couple of beers, when it is usually hysterically funny. (Note, not edgy, or witty - just rudely funny)

I guess you must be playing it wrong.

7
1

NY premiere of The Interview cancelled after hackers' terrorist threats

James Hughes 1
Silver badge

Ambitious move from the hackers. Going from data theft to a gitmo 12 years without trial threat.

4
0

A nation of CODERS? Yes, says UK.gov, and have some cash to do it

James Hughes 1
Silver badge

Re: Coding? HTML more like.

The curriculum requires visual (for the younger students) and text languages, so Scratch and usually Python.

0
0
James Hughes 1
Silver badge

Re: Just maybe.... @kraut

You are going to have to explain your post, because I am not sure what you are getting at.

But if it makes you happy, AFAIK, I have not experienced any ageism, sexual or racial discrimination, and have, I think, not been responsible for any either.

0
1
James Hughes 1
Silver badge

Re: is it not easier

@Myself - just re-read and saw the comment on 1st class degree. That's a 25k upfront, so a salary, so a one off payment to actually do it I presume. Still think they are limiting themselves too much by sticking to 1st class degrees.

0
0
James Hughes 1
Silver badge

Re: Code-As-A-Sport

You get the award for lack of understanding of the day.

They are not stopping maths, algebra, science, English etc. Coding is in addition and supplements the current ICT curriculum (it's not all of it - that's a media fuck up as usual). And coding will, I believe, help in a lot of those subjects anyway (computational thought process, algebra etc). The new curriculum will take people away from 'hipster' shit, and push teach 'proper' coding - starting with things like Scratch and moving on to Python.

I suggest taking a look at the curriculum, and prepare to be educated.

1
2
James Hughes 1
Silver badge

Re: Just maybe....

I'm late 40's, have rarely been out of work as a softie, and have just realised I am the oldest one in the new office I have just started in. Not seen any ageism in my career, so, am I lucky, or the norm?

As an aside, how would the government prevent offshoring? It's the companies doing it, so how is it the government destroying the industry?

0
0
James Hughes 1
Silver badge

Re: is it not easier

@DavCrav

whilst your points are valid, I doubt there are enough 1st class degrees in mathematics awarded per year to fill the teacher gap. So unless I have missed something in the announcement, they are not really after just first class degrees, which clearly are worth a lot more elsewhere.

Getting any people with 'decent' degrees in to teaching is surely the aim.

2
0
James Hughes 1
Silver badge

Re: win in the global race

Whilst I sympathise, unfortunately, the RoW is already racing, so we have to join in otherwise we will sink to the 'bottom'.

3
1

SPLASHDOWN! Orion lands safely in the Pacific Ocean

James Hughes 1
Silver badge

Re: More to this story

Whilst most of the 'facts' above are a little off, I think it would be a brave person who bet on Orion being first to the Mars ahead of SpaceX/Falcon. As you say, SpaceX's achievements are truly great, and are coming at a faster rate than from any other launch company.

Looking forward to the possible barge landing in a week or two's time...

0
0

Pub time for NASA bods? Orion spacecraft test launch called off

James Hughes 1
Silver badge

Re: Why is wind a problem

I think it's the high altitude shear that's the problem, throwing the rocket off course, presumably meaning more fuel to keep on course or get up to orbital speed.

2
0

Orion 'Mars' ship: Cosmic ray guard? Go. Parachutes? Go. Spacerock shield? Go!

James Hughes 1
Silver badge

Re: Off to the Smithsonian with ot!

I think all the new capsule designs (Orion, Dragon) are designed to be reusable. They just haven't reused them yet.

2
0
James Hughes 1
Silver badge

Re: Temperature

Yes. Mars return is even faster. SpaceX's Pica-X heat shield was designed for Mars return.

1
0

Ten Linux freeware apps to feed your penguin

James Hughes 1
Silver badge

Re: Gimp

As someone who worked on graphical systems and UI's for them some years ago, it always surprised me how difficult they are to use. Photoshop, GIMP, PaintShopPro etc. Never worked in the way I wanted them to work. Unfortunately the one I worked on (Satori) fell by the wayside, but at least it worked the way I wanted it to!

0
0

FOUR, count 'em, FOUR big rockets launching in next seven days

James Hughes 1
Silver badge

SpaceX are launching a Falcon 9 on 16th Dec as well - this one is supposed to land the first stage back on a barge.

By far the more interesting of the ones you have quoted.

Full launch list here...http://www.spaceflightnow.com/tracking/

4
1

Hi-torque tank engines: EXTREME car hacking with The Register

James Hughes 1
Silver badge

Re: Oil system?

The Tornado is similar by design.

The hydraulic system is extremely high pressure and lossy, and they have a tank of fluid that is expected to be much emptier at the end of the flight.

Which is why Tornado tails are always covered in oil.

2
0

Two driverless cars stuffed with passengers are ABOUT TO CRASH - who should take the hit?

James Hughes 1
Silver badge

I was at a talk last week at the IoE in London, to ICT students (16-18 yrs) where a Google dude was talking about the driverless cars (amongst other things).

A very perceptive question from one of the younger students from the audience. If there are two people crossing the road from different directions, and an accident is inevitable, how does the car decide which one to hit?

Google guy didn't have an answer, which is not that surprising. Not sure anyone has the answer yet.

0
0

Hey, it's ... Gecko man, Gecko man, does almost whatever a GECKO can

James Hughes 1
Silver badge

Please be careful not to cross the streams.

0
0

The IT Crowd's internet in a box gets $240k of crowdcash for a cause

James Hughes 1
Silver badge

Basically RACHEL with a update facility?

http://worldpossible.org/rachel/

Seems like a fair amount of wheel reinventing going on here.

0
0

Raspberry Pi mini-puter TOO BIG and EXPENSIVE for you? Think AGAIN

James Hughes 1
Silver badge

Re: GPU is not dual core

Two vector/scaler cores, plus 12 Quad processors.

Each vector core is a 16 way SIMD devices.

So lots of 'cores'.

0
0
James Hughes 1
Silver badge

Actually, a guy at the Foundation is working on improving XBMC menus and the like - they are currently a bit inefficient, especially when controlled via CEC.

Although multi cores would be nice (but how multi threaded is XBMX?), better to get the software efficient first...

0
0
James Hughes 1
Silver badge

Re: Running headless over wifi this can't be beaten

re: reading comprehension.

Rather ironic that you got my name wrong then....it's written next to the post, and contains the name 'James' not 'John'

But my point was that you cannot compare a $7 UNO with a $20 Pi, simply because they are completely different devices. In fact one has to wonder why you brought the subject up as they are so completely different. Rather like comparing a Reliant Robin with a F430. I suppose they are still both cars, according to some definition of car.

0
2
James Hughes 1
Silver badge

Re: Running headless over wifi this can't be beaten

Good luck with all that 3D, camera and video decode with the $7 UNO.

But to be a little less sarcastic, you get what you pay for. If the UNO does what you want - use it. If the A+ does what you want, use it. Don't use the wrong device for a job, because you will pay the wrong price.

3
3
James Hughes 1
Silver badge

@AC - what has changed

Form factor has been made smaller

Power requirements have been reduced

GPIO increased

Better audio

uSD

Best thing? It's now $20 (before tax/delivery). I am not aware of anything remotely this powerful in this price range. Remember, decent 3D, 2D, camera ISP, 1080p30 H264 encode/decode, 1Ghz (overclocked) processor, well supported Linux distro (plus others), great community.

For $20.

I think that is a pretty good deal.

And I think you are wrong about the A being more popular, I expect sales of it to fall to zero. This is so much better. The ONLY reason to still buy an A is if you already have a case for an A. And since cases cost from about $5 you may as well just buy a new one for the new form factor. TBH, if case compatibility is the only argument you can come up with, the A+ is clearly already a success!

The reasons for 1 USB is that the SoC only supports 1. To add more, you have to add a USB hub to the board which means much more expensive - basically the old model B. You want more USB? Get a B+. It's only $15 more.

2
0
James Hughes 1
Silver badge

Re: So are they all made in UK now ?

B, B+, A and A+ all made in the UK (except those actually destined for the Chinese market anyway). I think some CM's and some camera modules are still made in China. - but that is a decision made by the licencees, not the Foundation.

2
0

Caterham Seven 160 review: The Raspberry Pi of motoring

James Hughes 1
Silver badge

The haynes book was called Build your own Sports Car by a guy called Ron Champion. The car is called the Locost, and have a thriving race series run by the 750 Motorclub.

If you can find the donor parts (Mk2 Escort, Cortina front hubs) they are pretty easy to make, although I haven't finished my road going one yet, even after 15 years, due to buying a racing one ready made and then having too many children.

1
0
James Hughes 1
Silver badge

Re: Westfield SEight

The handling on the SEight is a bit iffy ( or used to be) due to the very heavy engine. Makes the steering a bit heavy as well.

And there's nothing wrong with the styling of the Westfield! (made one, loved it, only transport for well over a year)

And as for 'bodged together kit car", I suggest taking a look at some that have been made properly. Don't judge all kit cars by the worst examples.

2
0

Ordnance Survey intern plonks houses, trees, rivers and roads on GB Minecraft map

James Hughes 1
Silver badge

Re: I'M NOT BEING FUNNY BUT...

I'm not being funny, but what is the point of Emmanuel Goldstein.

It's pretty much the same question. I hope you know the answer to it.

3
0

Raspberry Pi B+: PHWOAR, get a load of those pins

James Hughes 1
Silver badge

Something sounds odd. There are plenty of people with months and months of uptime without any sort of corruption. Me included - I got a old B256 with OpenElec that has been running with occasional reboots for a year and it's still fine.

1
0
James Hughes 1
Silver badge

SD card corruption.

The corruption caused (actually increased the frequency) by overclocking was fixed some months ago.

Corruption caused by wearing out the cards might be an issue, SD cards do have limited write cycles, so avoiding excessive writing can increase life considerably. Turn off logging to card. Leaving them for a year might be hitting that sort of issue, in fact I would think it quite likely if you haven't taken precautions to reduce write cycles.

Your particular job would be better served by the compute module by the sound of it.

3
0
James Hughes 1
Silver badge

Nope, max 1GB, and only if a manufacturer decides to make a POP chip that fits, Which won't happen. So 512MB until the next version comes out. I believe Eben Upton has said this will be the final revision with the 2835.

3
0

Forums