Hamilcar Glider?
Two-strokes are fine for small single-cylinder or very large slow-revving engines but not so good for high-revving multi-cylinder aero-engines.
It was tried with the Junkers Jumo 205 (diesel); now that’s an interesting engine!
Allison were working on a sleeve-valve X24 during the war but it was eventually cancelled.
One of the most important areas that is often forgotten is in the development of the fuel for these engines; and this tended to favour the poppet valve.
The comparison produced by Bristol aero-engines; obviously a bit of ‘spin’ going on here.
Reproduced from Aero Engineering, Volume One, George Newnes Limited.
Whilst sleeve valve engines outwardly might appear ‘complicated’ due to a percieved higher parts count…
A reduced part count for sleeve-valve engines compared to poppet-valve engines was promoted by Bristol aero-engines.
There is a well-known comparison photograph (that conveniently omits the sleeve drive-gears).
Short Sunderland?
Bristol Belvedere?
I was about to make a silly comment myself, it’s hard to resist isn’t it.
The Great Escape is a film that we’ve all become used to watching, snuggling up comfortably on the sofa on Boxing Day…..and forgetting what it was really all about.
I thought long and hard about making such a flippant post…..and was careful to make it about the film and about the use of the Great Escape as a subject for a book about project management.
I also took the trouble to find out from which hut (123) the first tunnel ‘Tom’ was dug and which direction it went (west); the film is wrong on the hut numbers (except 104) and the direction that the tunnels went (the tunnel ‘traps’ are also mixed up).
Much of the rest of the film is incredibly close to the actual events, although there is understandable ‘condensing’ of people, time and space, but this is not really surprising as the technical advisor for the film was ‘Wally’ Floody who built the original tunnels (and who found the filming experience so real he started having nightmares).
Perhaps the great success of ‘The Great Escape’ film is that it has managed to bring this brutal piece of history out of obscurity into our comfortable living rooms every Christmas…
…although few of us realise that the actual escape was made with snow on the ground!
People only say they’re getting easier because they’re jealous that people have better results then they’ve got.
Maybe the olympics are getting easier, because more world records are been broken ever time…
The government is apparently planning a new medal structure for the 2012 games:
First – Gold * (Star) Medal
Second – Gold Medal
Third – Gold Medal
Fourth – Silver Medal
Fifth – Silver Medal
Sixth – Bronze Medal
Seventh – Bronze Medal
Eighth – ‘Winner’ Certificate
People only say they’re getting easier because they’re jealous that people have better results then they’ve got.
Maybe the olympics are getting easier, because more world records are been broken ever time…
The government is apparently planning a new medal structure for the 2012 games:
First – Gold * (Star) Medal
Second – Gold Medal
Third – Gold Medal
Fourth – Silver Medal
Fifth – Silver Medal
Sixth – Bronze Medal
Seventh – Bronze Medal
Eighth – ‘Winner’ Certificate
While I can’t fault the memorial…..I’m not so sure about the book.
I can just see the 2008 remake of ‘The Great Escape’:
Bartlett: “The first tunnel will go out due west from hut 123.”
MacDonald: “Sorry Roger, did you say the first tunnel?”
Bartlett: “Yes, we’re formulating a project with an initiative for developing and integrating solutions that leverage emerging technologies working with mission-critical solutions for a number of project deliverables utilising scarce resources in a dynamic and unpredictable environment!”
Sorry, couldn’t resist. 😮
It sounds a lot when you say it like that…
…but it only actually represents about three quid per person per year since the games were last held in Britain. 🙂
Three quid I would rather spend on something that interest’s me 😀
I’m not that interested in the Olympics myself but I could hardly begrudge the UK spending the money.
After all, how much Me-109E do you get for £2.99? 🙂
It sounds a lot when you say it like that…
…but it only actually represents about three quid per person per year since the games were last held in Britain. 🙂
Three quid I would rather spend on something that interest’s me 😀
I’m not that interested in the Olympics myself but I could hardly begrudge the UK spending the money.
After all, how much Me-109E do you get for £2.99? 🙂
I heard that the cost of the London olympics will not cost more than 9.4 BILLION pounds!!!
It sounds a lot when you say it like that…
…but it only actually represents about three quid per person per year since the games were last held in Britain. 🙂
I heard that the cost of the London olympics will not cost more than 9.4 BILLION pounds!!!
It sounds a lot when you say it like that…
…but it only actually represents about three quid per person per year since the games were last held in Britain. 🙂
Now that sounds like too good an offer to be missed…..thanks for taking the trouble to join the forum to post it!
So how about it guys? A forum outing to visit and photograph this old workhorse before it goes to the knacker’s yard?