Analogue Computing at the Science Museum
There were reports in the papers this week about James Lovell selling the checklist that he used to correctly setup the lunar module to get them back home.
What is always missed out in these discussions, is that all of the calculations for the Apollo moon landings were done on a simulator, built using two PACE 231R analgue computers linked together.
At the Science Museum, they did have Lord Kelvin’s differential analyser, but although it was impressive, with lots of impressive engineering and brass gears, there was little to indicate, what this type of machine grew into by the 1960s. Without analogue computers to solve the complicated dynamics of the moon landings, the Americans wouldn’t have been able to get there when they did. Digital computing didn’t have the capability to match a PACE 231R to solve the simultaneous differential equations involved until the mid 1970s.
I was lucky enough to work with a PACE 231R and there are pictures of the one I used here.
There doesn’t appear to be a working PACE 231R anywhere in the world. But to get one to work would be a lot easier than say to get an early digital machine working. An analogue computer is basically a peg board that links a series of amplifiers together. Now I know that these amplifiers are thermionic valve and not transistor, but a typical machine would have a hundred or so of them. And as they use something very akin to 1960s audio technology, finding someone to fix them would not be difficult. Our machine at ICI Plastics in Welwyn Garden City, was carefully looked after by one Eddie Kniter, a Pole, who walked his way to Switzerland to escape the Nazis.
I wonder if the Science Museum has one of these machines in its reserve collection. Getting it working, would really show kids how differential equations are useful in real life.
Returning to Apollo, I remember that the magazine, Simulation, published by Simulation Councils Inc., had a detailed description in one issue of all the simulators and simulations done in connection with the project.
I’d love to get hold of a copy.
Looking For Maiden Lane Station
After reaching York Way, I carried on going north, with the intention of seeing, if I could find any trace of the old Maiden Lane station on the North London line.
It was quite a walk and I think those who are proposing that the station be reopened to serve Kings Cross Central are mistaken. On the other hand reopening York Road Underground station, shown in the pictures, might be a possibility.
So did I find any trace of Maiden Lane station? There’s just a little of it left by a railway bridge. After I took these pictures, I took the North London line past the spot and couldn’t see anything by the track-side.
King’s Boulevard
These pictures show the new King’s Boulevard which leads from King’s Cross station to the Central St. Martins College of Art and Design.
It is the first part of the development at Kings Cross Central to be completed. Note the maps, which set a whole new standard.
The New Kings Cross Starts to Appear
I took these pictures today and they show how the new Kings Cross station is starting to appear.
There is more about what is going on here.
The Labyrinth That Is Kings Cross
Kings Cross St.Pancras is not a very passenger friendly tube station.
They have put in two new Underground ticket halls in the past few years; one in front of St. Pancras station and one between Kings Cross and St. Pancras stations.
Sometimes I arrive at Kings Cross on say the Northern or Victoria lines and want to get out on Euston Road. Often I fail and end up at the back of the station, when I want the front. So I have a long walk along crowded corridors to get to where I originally wanted. Sometimes, I have to brave the waiting area at the front of the station, which is a pedestrian’s nightmare.
Waiting at Kings Cross
This picture was taken today, but it shows how people and masses of baggage seem to turn up an hour or so before their train leaves and just block the space. Hopefully, when they finish the station, people will wait in a better place. Also, as I said here, I do wish they’d give you a series of alerts about your train, so you could wait say in Starbucks with a coffee in comfort. After all if Transport for London can do it for buses with a simple text, Network Rail can do it for individual trains, especially, if you ask for it when you buy the ticket on-line.
92 Clubs – Week 7 – 5 Clubs – 9 Trains, 1 Tram
Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7
Day 43 Day 44 Day 45 Day 46 Day 47 Day 48
So it’s all done now!
As there was only five clubs, the highlights of the week are thin on the ground.
Best Signposted Stadium of the Week
Wimbledon was the easiest to find, as I just got on a bus and waited until, Kingsmeadow was announced. It is one of only a few stadia, which are announced on the buses. Only London stadia can be announced on buses and a few are, although others have their own stations.
Worst Signposted Stadium of the Week
This has to be a joint award to Wycombe and Yeovil. I hardly saw a sign to any of the grounds, that would help a walker or a driver.
Most Surprising Town of the Week
Wolverhampton surprised me. The ground is fairly close to the centre and easily walkable from either the station or the tram. There’s even an underpass under the busy ring road connecting the ground to the town centre. Quite a few grounds need these. surely, they mean that fans can get a meal or a drink in the centre before or after the match. I seem to remember seeing a report, that the proximity of Portman Road to Ipswich town centre, was worth millions a year to the town.
Dump of the Week
I know Yeovil has evolved over time and totally sold itself to the car, but surely they could do much better. I would be repeating myself endlessly, if I added to what I said on Day 48.
The Fightback Against Cable Theft Has Begun
Last night there was a debate in the House of Lords about the Legal Aid, Sentencing and Punishment of Offenders Bill.
Lord Faulkner of Worcester said this, whilst proposing two amendments to deal with scrap metal theft.
As an indication of what we are up against, I would draw your Lordships’ attention to a giant screen advertisement at West Ham United’s football ground,which was seen on 27 September and which, I believe is there on a regular basis. It says, in huge letters, “We want your scrap for cash”, followed by three exclamation marks. All that was missing were the three words “No questions asked”.
So what was the evidence on the 27th of September? The picture is shown here.
92 Clubs – Day 48 – Yeovil
They say you should leave the best to last, but this was not a case of that. But with Yeovil, it was much a case of saving the worst to last.
The only good bit was going to the town on a High Speed Diesel Train changing at Castle Cary for Yeovil Pen Mill.
Before I left, I looked up their web site to see how you get to the ground from the station. My eyes aren’t good, but look at this page, which gives directions to the ground. Trains, buses and walking aren’t even mentioned. So I sent the club an e-mail and of course they didn’t bother to reply. They don’t appear from the site to run a match-day bus either!
When I arrived at the station, I walked to the town centre, along a pleasant path in a country park, but once in the centre, despite plenty of signs to it, I couldn’t find the tourist information centre. I think when I did, it wasn’t signed and it was closed.
So in the end I took a taxi to the ground and got the driver to drop me at the station on the way back. I think we saw just one sign to the ground and that was when you could actually see Huish Park. So I just took a picture and retreated.
Huish Park, Yeovil
The only trouble was I had to wait ninety minutes for the train. But at least the station was worth seeing from an architectural point of view and had been well restored.
I was back at Paddington just before 16:30 to complete my odyssey.
In my travels, I have not found a town or football club with so little information for vistors. I shall not be going again. I certainly won’t have to look far for my dump of the week.
How To Draw An On-Board Map
I took this picture on the tram between Wolverhampton and Birmingham.
An Excellent Route Map
It shows how with a bit of thought, you can make maps on trains, trams and buses really useful. Note how all the destinations are annotated with what is near to the stop.
Birmingham Moor Street Station
Of all the stations, I have visited on my trip, Birmingham Moor Street is one of the best. It is not a modern steel and glass c reation, but a well-refurbished station with a 1930s theme. Just look at these seats.
Seats At Moor Street Station
It is also home to the cosmetically-restored 2-8-0 steam engine, GWR 2885.
GWR 2885 at Moor Street Station
More of these engines should be displayed at stations, just like Locomotion No.1 used to be at Darlington. The story of that is described here.
It has been a very good restoration of a station, which has won awards according to Wikipedia.
Refurbished in 1930s style, the station has reproduction lamps, clock, seating, and signage. The renovation won the Railway Heritage Trust award for 2004 and The Birmingham Civic Society’s Renaissance Award for 2005.
I doubt the Dyson hand-dryers in the Gents are original though.
Please Adjust Your Dress
The sign may well be original though.
The Anonymous Widower 