OT: Drawings of the 1942 German V2 Rocket

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Klaus Kragelund

Jan 1, 1970
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I read some of the articles some years ago, updated with the battlefield effectiveness of the other countries. The UK Army had equally bad percentage that would use a weapon, AFAIR about 15%. They would spend an enormous amount of time on breaks, having tea etc. The Germans were a lot better, had about 30-40% battle effectiveness (persons that would shoot). They were better soldiers on a man to man basis, but some of the reason for that was also attributed to the fact that they were defending their homeland and as such would fight harder.



Also the German divisions had death penalty for not obeying orders and they practiced it shooting soldiers that did not fight. The US and UK did not..



The Germans excelled in another matter. The would only bog down 30% of the troops for support (transport, administrative personnel etc), whereas theUS and UK troops would use up to 60& for support functions.



They learned a lot from WWII. The soldier of today practice and simulatesthe combat situation with realistic exercises, depending a lot on "muscle memory" which is exercises responding to the enemy and killing them, repeating the exercise many times over and when they are put in a real life combat situation, Muscle Memory takes over and the soldier is a lot more effective. Scary stuff.



The downside is widespread PTSD, forcing soldiers to kill when they really do not want to.

On D-day, the US actually selected young and never proven soldiers for the assault waves. The reason was supposedly that the guys that had been in combat would never face the dangers of Normandy, at least the young guys had no clue until they were in the middle of it.

Cheers

Klaus
 
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Klaus Kragelund

Jan 1, 1970
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Wait a second here. If the US had already designed prox fuses, how can

you say that the Brits invented them?



And what do you mean by "pulses"? Prox fuses were doppler CW.

I was actually referring to the cavity magnetron with respect to the development of the high performance RADAR.

Cheers

Klaus
 
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josephkk

Jan 1, 1970
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WWII was a different time. There are many examples of companies donating
things, or taking contracts for cost plus one dollar.

Wow JL, that is some hallucination. Some decades ago i worked on some
cost plus contracts. We could build anything we wanted from parts. But
we could not buy the tool we needed even if (probably especially if) it
would save thousands of dollars and weeks to months of schedule. All the
labor charges were sufficiently overpriced that you could employ a small
team of engineers and techs for months to replicate an off the shelf ENI
or AR RF amplifier and similar antics.

?-)
 
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T

Jan 1, 1970
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The Brits get credit for the magnetron and for pushing the point-contact diode
as the mixer. Americans invented the klystron, which made the tracking LO
practical, and a lot of pulser and waveguide technology. And a lot of systems
engineering.

The brits actually had no idea of the ultimate power potential of the cavity
magnetron until they brought a couple here and someone (at Bell labs? I forget)
connected it up to a serious high-voltage pulser. Everyone was astounded.

Actually I think they brought it to the people at M.I.T. Lincoln Labs.
There's a good book out there whose title and author escapes me that
details the developement.
 
K

Klaus Kragelund

Jan 1, 1970
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Another 'Home Court Advantage' is much shorter supply lines.

Well no. The percentage number takes the length into account. Doh

Cheers

Klaus
 
K

Klaus Kragelund

Jan 1, 1970
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I guess all those Germans and Japanese shot themselves.

John Basilone and Chuck Tatum took care of a good portion of the Japanese

Regards

Klaus
 
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T

Jan 1, 1970
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On 07/31/2013 01:01 PM, John Larkin wrote:
[...]
The death count from WWII is estimated at 60 million, 2.5% of the world's
population. Unlike previous conflicts, this was Total War, 100% involvement,
cities firebombed, passenger ships torpedoed, starvation camps, six million
innocents killed in gas chambers and incinerated in ovens.

Not very civilized.

There's a very real sense in which our civilization ended in 1914, and
we're only now realizing it. The moral descent from the debate over the
Armed Ship Bill at the beginning of WW1 to the death camps and fire
bombings of WW2 is astonishing.

Phil, ( and anyone else worried about this )

If you have a couple of free hours you might be somewhat reassured by
Steven Pinker's "The Better Angels of Our Nature: Why Violence Has
Declined". Pinker presents a good ( IMNSHO <grin!> ) staistical
argument that violence has steadily decreased over the centuries, and
that we are living in a surprisingly -- for human beings -- safe world
today. He then goes on to describe the factors he believes have
contributed most to this result.

Before anyone asks, Pinker isn't claiming, as Dr. Pangloss did, that
things are perfect, only that they are much, much better than they
have been.


Frank McKenney
--

Utopian ideologies invite genocide for two reasons. One is that
they set up a pernicious utilitarian calculus. In a utopia everyone
is happy forever, so its moral value is infinite. Most of us agree
that it is ethically permissible to divert a runaway trolley that
threatens to kill five people onto a side track where it would kill
only one. But suppose it were a hundred million lives one could
save by diverting the trolley, or a billion, or -- projecting into
the future -- infinitely many. How many people would it be
permissible to sacrifice to attain that infinite good?

Not only that, but consider the people who learn about the promise
of a perfect world yet nonetheless oppose it. They are the only
things standing in the way of a plan that could lead to infinite
goodness. How evil are they? You do the math.

The second genocidal hazard of a utopia is that it has to conform to
a tidy blueprint. In a utopia, everything is there for a reason.
What about the people? Well, groups of people are diverse. Some of
them stubbornly, perhaps essentially, cling to values that are out
of place in a perfect world, They may be entrepreneurial in a world
that works by communal sharing, or bookish in a world that works by
labor, or brash in a world that works by piety, or clannish in a
world that works by unity, or urban and commercial in a world that
has returned to its roots in nature. If you were designing the
perfect society on a sheet of paper, why not write these eyesores
out of the plan from the start?

-- Steven Pinker / The Better Angels of Our Nature

I've seen the Pinker video. It's pretty fascinating. That said, until we
break the corporate plutocracy that exists we're not going to stop
warfare.

Then too there's the economic warfare that goes on due to that
plutocracy.
 
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Jasen Betts

Jan 1, 1970
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Aha! Seems everyone finds that out early in their career. I carried a
full set of four colors with even back in the late 80's, even on
international flights. For that same reason.

The other problem back then were projectors. "So here is the block
diagram of the circuitry we want to talk about in this design review"
... *POOF* ... clatter ... phut ... darkness came over the land. "Do you
have a spare bulb and some tools?" ... "Uhm, I think so, possibly,
maybe, let me ask".

the good projectors had a spare inside, you just needed to move a lever.
(and tell someone ofcourse)
 
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Jasen Betts

Jan 1, 1970
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Indeed. And the only reason they were not effective during the air-raid on Germany was that the AA guns did not have height setting of the shells, so even though the AA guns were radar guided, they did not send the shell to the correct height

The Allied guns didn't have height setting either, the "VT" was was a proximity fuse.
 
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Martin Brown

Jan 1, 1970
0
Incorrect. The German gun laying radar was actually pretty good for the
time with a claimed 25m accuracy at about 30km range using their
parabolic Wurtzberg dish antenna at about 50cm. They came onstream about
1939 but the bigger 1941 E variant was the most effective see:

http://en.wikipedia.org/wiki/Würzburg_radar

A confiscated dish from that series ISTR a Würzburg-Riese E was still in
use at MRAO Cambridge scanning for terrestrial interference as recently
as the 1980s. It was a good size and built to last.

Germany lacked resonant cavity magnetrons which allowed minaturised
radar in aircraft but they were a technologically advanced adversary
with their own top secrets. V1 cruise missile and V2 ballistic missile
were distinctly non-trivial military technical achievements.

They were all clock timing based from initial firing with a means to
adjust time typically on the front. A fixed time fuse if you like eg:

http://www.mwrforum.net/forums/showthread.php?p=158246
The Allied guns didn't have height setting either, the "VT" was was a proximity fuse.

It was never a height setting as such just a time along the trajectory
in classical anti-aircraft gunnery until the proximity fuse was
invented. Setting AA fuse timings fast enough to be useful or having
them preset and finding the right one was a nightmare. The main effect
of AA fire was to make people on the ground feel a bit better.

The whole point about the VT fuse was that you reduce the search space
from a 3D to a 2D problem. If the shell trajectory intersects any target
(and not just the one being aimed at) then it will detonate at its
closest approach or at least close enough to do real damage.

VT deliberately obfuscated how the "variable timing" was achieved.
 
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Joerg

Jan 1, 1970
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Jasen said:
the good projectors had a spare inside, you just needed to move a lever.
(and tell someone ofcourse)

And then it's like with a woman I helped a while ago when a tire blew
out on her car. After unloading a fairly full trunk we got to the spare
which ... was flat :-(
 
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