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Jenburdoo (Jenburdoo)
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Posted on Wednesday, October 27, 2010 - 12:43 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Their altimeters were inaccurate, but they found a better method of determining their height. What was it?
Whirligig (Whirligig)
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Posted on Wednesday, October 27, 2010 - 1:56 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Drugs relevant? :P

Height of clouds? Passengers being scared? Pressure? Distance from a tower?

Do they measure: Distance? Time? Length? Area? Volume? Mass? Density? Weight? Force? Energy?

Is it an estimation?

Is this on an airplane?

Are they on the ground?

Do they use the altimeter readings in their calculation?
Biograd (Biograd)
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Posted on Wednesday, October 27, 2010 - 2:04 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they use the curvature of the earth somehow? (If you know the distance along the ground to a point on the horizon, you can calculate your height this way)
Kayleetonkslupin (Kayleetonkslupin)
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Posted on Wednesday, October 27, 2010 - 2:08 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Skydiving relevant? (I know you're not Galfisk, but I thought I'd ask anyway)

"They" = H/A/M? H/A/F? Mixed? Relevant?

True story? FYOI? FSEI?

Does this take place on (or perhaps above) Earth?

In {LTPF list of centuries}?
Jenburdoo (Jenburdoo)
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Posted on Wednesday, October 27, 2010 - 2:44 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Drugs relevant? :P No.

Height of clouds? Passengers being scared? Pressure? Distance from a tower? None of these.

Do they measure: Distance? This. Time? Length? Area? Volume? Mass? Density? Weight? Force? Energy? None of the others.

Is it an estimation? No.

Is this on an airplane? Yes.

Are they on the ground? No.

Do they use the altimeter readings in their calculation? No.

Did they use the curvature of the earth somehow? No. (If you know the distance along the ground to a point on the horizon, you can calculate your height this way)

Skydiving relevant? No. (I know you're not Galfisk, but I thought I'd ask anyway)

"They" = H/A/M? This. H/A/F? Mixed? Relevant? Yes.

True story? This. FYOI? FSEI?

Does this take place on (or perhaps above) Earth? Yes.

In {LTPF list of centuries}? 20th.
Kayleetonkslupin (Kayleetonkslupin)
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Posted on Wednesday, October 27, 2010 - 2:49 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

{LTPF list of continents}, and {LTPF list of decades}?
Jenburdoo (Jenburdoo)
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Posted on Wednesday, October 27, 2010 - 4:13 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

{LTPF list of continents}, Europe and {LTPF list of decades}? 1940s.
Kayleetonkslupin (Kayleetonkslupin)
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Posted on Wednesday, October 27, 2010 - 4:28 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

WWII? Allies or Axis powers relevant? Air Force pilots?
Jenburdoo (Jenburdoo)
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Posted on Wednesday, October 27, 2010 - 5:06 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

WWII? Yes. Allies This. or Axis powers relevant? Air Force pilots? Yes.
Kayleetonkslupin (Kayleetonkslupin)
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Posted on Wednesday, October 27, 2010 - 5:35 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

American pilots? Or another Allied power?
Rbruma (Rbruma)
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Posted on Wednesday, October 27, 2010 - 6:17 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Is it another plane relevant? More than one? If so, allied plane? Enemies'?

The pilots: American? British? Russian?

Relevant the type of plane? Bomber? Fighter?

Were they on a mission above enemy territory? Or maybe in a training at home?

Radar relevant? Relevant why the altimeters were inaccurate in the first place? If on a mission, were they en route to their fighting destination or trying to return home? Were they hit?

Did the plane crash? Does one need specialized knowledge of plane operation to solve this puzzle? Did they use another instrument on board? Is the weather relevant?

Just to be sure: we are (and they were at the moment) trying to establish the altitude of the plane, correct? Not the altitude of their crash site, for example?
Balin (Balin)
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Posted on Wednesday, October 27, 2010 - 1:07 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they drop something out of the plane and time how long it took to hit the ground?
Jenburdoo (Jenburdoo)
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Posted on Wednesday, October 27, 2010 - 1:27 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

American pilots? Or another Allied power? This.

Is another plane relevant? More than one? Mildly - eighteen in all were on this mission together. If so, allied plane? This. Enemies'?

The pilots: American? British? This. Russian?

Relevant the type of plane? Yes. Bomber? This. Fighter?

Were they on a mission above enemy territory? Yes. Or maybe in a training at home?

Radar relevant? No. Relevant why the altimeters were inaccurate in the first place? No. If on a mission, were they en route to their fighting destination or trying to return home? Neither. Were they hit? Several were.

Did the plane crash? Some did. Does one need specialized knowledge of plane operation to solve this puzzle? No. Did they use another instrument on board? Yes, for SVV of instrument. Is the weather relevant? No.

Just to be sure: we are (and they were at the moment) trying to establish the altitude of the plane, correct? Yes. Not the altitude of their crash site, for example? No.

Did they drop something out of the plane and time how long it took to hit the ground? No.
Woodworm (Woodworm)
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Posted on Wednesday, October 27, 2010 - 9:28 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

So is this the Battle of Britain? Did the pilots drop anything out of their planes? Were they flying over water? Over land? Over some relevant landmark?
Jenburdoo (Jenburdoo)
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Posted on Thursday, October 28, 2010 - 1:20 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

So is this the Battle of Britain? No. Did the pilots drop anything out of their planes? Yes. Were they flying over water? This. Over land? Over some relevant landmark? And this.
Kayleetonkslupin (Kayleetonkslupin)
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Posted on Thursday, October 28, 2010 - 1:31 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Gibraltar?
Jenburdoo (Jenburdoo)
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Posted on Thursday, October 28, 2010 - 1:43 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Gibraltar? No.
Woodworm (Woodworm)
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Posted on Thursday, October 28, 2010 - 9:34 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

The Ruhr campaign? Barnes Wallis?
Jenburdoo (Jenburdoo)
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Posted on Thursday, October 28, 2010 - 12:18 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

The Ruhr campaign? Yes. Barnes Wallis? Yep.
Woodworm (Woodworm)
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Posted on Thursday, October 28, 2010 - 2:14 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Ah, I hoped it would be. So we're talking about bouncing bombs and their trajectories?

So is this puzzle set in the Welsh valleys? I believe there was a dam in Wales where they used to practise to get their angles right? Did they work out their altitudes by counting the time between bounces, or the time taken to get from plane to target?
Jenburdoo (Jenburdoo)
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Posted on Thursday, October 28, 2010 - 9:29 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Ah, I hoped it would be. So we're talking about bouncing bombs and their trajectories? Yes.

So is this puzzle set in the Welsh valleys? No. I believe there was a dam in Wales where they used to practise to get their angles right? Irr. Did they work out their altitudes by counting the time between bounces, or the time taken to get from plane to target? Neither.
Balin (Balin)
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Posted on Tuesday, November 02, 2010 - 3:04 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they count the time between drop and bounce? Drop and hit? Did they count any time, period?
Jenburdoo (Jenburdoo)
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Posted on Tuesday, November 02, 2010 - 3:25 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they count the time between drop and bounce? Drop and hit? Did they count any time, period? No.
Balin (Balin)
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Posted on Friday, November 12, 2010 - 1:28 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they measure a distance? The number of bounces?
Jenburdoo (Jenburdoo)
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Posted on Friday, November 12, 2010 - 3:11 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they measure a distance? Yes. The number of bounces? No.
Jenburdoo (Jenburdoo)
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Posted on Friday, November 12, 2010 - 3:12 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

OOPS. Did they measure a distance? Not directly. The number of bounces? No.
Balin (Balin)
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Posted on Friday, November 12, 2010 - 1:19 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they drop the bombs from the plane? Onto the sea? Or something else at sea level?

Could you please recap?
Jenburdoo (Jenburdoo)
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Posted on Friday, November 12, 2010 - 9:59 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they drop the bombs from the plane? Yes. Onto the sea? No. Or something else at sea level? No.

Could you please recap?

During the "bouncing bomb" raid in 1943, the British aircraft of 617 "Dambusters" Squadron had inaccurate altimeters. However, their crews used something else to successfully determine their height. They did not measure or count anything to do this.
Balin (Balin)
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Posted on Saturday, November 13, 2010 - 3:56 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they use the other planes to help determine their height/
Jenburdoo (Jenburdoo)
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Posted on Saturday, November 13, 2010 - 4:17 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they use the other planes to help determine their height? No.
Rbruma (Rbruma)
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Posted on Monday, November 15, 2010 - 7:52 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they compared their altitude to the height of a ground object? If so, natural? Man-made? Whose height was already known?
Jenburdoo (Jenburdoo)
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Posted on Monday, November 15, 2010 - 12:08 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they compared their altitude to the height of a ground object? No. If so, natural? Man-made? Whose height was already known?
Balin (Balin)
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Posted on Tuesday, November 16, 2010 - 7:59 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they use the bombs to help determine height? Size of the explosion?
Jenburdoo (Jenburdoo)
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Posted on Tuesday, November 16, 2010 - 9:43 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they use the bombs to help determine height? Size of the explosion? No to both. I suspect an FA.
Jenburdoo (Jenburdoo)
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Posted on Sunday, November 21, 2010 - 6:40 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Hint: Why did the pilots need to know their height in the first place?
Balin (Balin)
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Posted on Wednesday, December 01, 2010 - 1:26 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they need to know their height to keep from crashing into something? To stay above the clouds? To stay out of sight?
Jenburdoo (Jenburdoo)
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Posted on Wednesday, December 01, 2010 - 1:36 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they need to know their height to keep from crashing into something? To stay above the clouds? To stay out of sight? None of these.
Balin (Balin)
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Posted on Wednesday, December 01, 2010 - 7:08 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did only one person need to know the height? Was anyone planning to jump out of the plane?
Jenburdoo (Jenburdoo)
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Posted on Thursday, December 02, 2010 - 2:04 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did only one person need to know the height? One person in each plane. Was anyone planning to jump out of the plane? No.
Balin (Balin)
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Posted on Thursday, December 02, 2010 - 4:24 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Wait...there's more than one plane involved? Did each plane determine its own individual height? Or did they determine their height...collectively, so to say?
Woubit (Woubit)
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Posted on Thursday, December 02, 2010 - 7:41 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Once there was a silly old ram...
Jenburdoo (Jenburdoo)
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Posted on Thursday, December 02, 2010 - 12:23 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Wait...there's more than one plane involved? There were 18 planes, attacking three dams. Did each plane determine its own individual height? Yes. Or did they determine their height...collectively, so to say? No. Each plane attacked on its own.
Balin (Balin)
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Posted on Thursday, December 02, 2010 - 11:02 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they determine their height by something related to the dams bursting?
Jenburdoo (Jenburdoo)
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Posted on Friday, December 03, 2010 - 1:52 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they determine their height by something related to the dams bursting? No.
Balin (Balin)
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Posted on Friday, December 03, 2010 - 2:01 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they determine their height by observing something? By performing mathematical calculations?

Could you please recap?
Jenburdoo (Jenburdoo)
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Posted on Friday, December 03, 2010 - 2:20 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they determine their height by observing something? Yes. By performing mathematical calculations? No.

Could you please recap? During the special "Dambusters" raid to destroy German dams with bouncing bombs, the bombers of 617 Squadron had inaccurate altimeters. Why was this relevant and how did they solve the problem? You seem to have an FA about what the altimeters were needed for in the first place.

Hint: It wasn't that the altimeters were actually inaccurate, but that they weren't accurate enough.
Balin (Balin)
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Posted on Friday, December 03, 2010 - 2:34 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they need the altimeters to help with the actual dropping of the bombs? Were the altimeters close to the actual height? Way off? Somewhere in between?
Jenburdoo (Jenburdoo)
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Posted on Friday, December 03, 2010 - 4:29 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they need the altimeters to help with the actual dropping of the bombs? Yes. Were the altimeters close to the actual height? Yes. Way off? Somewhere in between?
Balin (Balin)
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Did they solve the problem by observing the dams themselves?

Relevant how they determined that the altimeters were off?
Jenburdoo (Jenburdoo)
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Posted on Friday, December 03, 2010 - 9:38 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they solve the problem by observing the dams themselves?

Relevant how they determined that the altimeters were off?

No to both.
Balin (Balin)
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Posted on Friday, December 03, 2010 - 10:01 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe the altimeters?
Jenburdoo (Jenburdoo)
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Posted on Friday, December 03, 2010 - 11:21 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe the altimeters? No.
Balin (Balin)
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Posted on Saturday, December 04, 2010 - 5:24 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe the other planes? The weather? The bombs?
Jenburdoo (Jenburdoo)
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Posted on Saturday, December 04, 2010 - 6:50 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe the other planes? The weather? The bombs? No to all.
Balin (Balin)
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Posted on Saturday, December 04, 2010 - 3:33 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe something on the ground? In the air? In the water? The water itself?
Jenburdoo (Jenburdoo)
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Posted on Saturday, December 04, 2010 - 4:38 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe something on the ground? In the air? In the water? Not in it...The water itself? Yesish.
Balin (Balin)
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Posted on Saturday, December 04, 2010 - 4:49 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe something on the water? The bouncing bombs? Waves? Ripples? Ripples/waves made by the planes?
Jenburdoo (Jenburdoo)
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Posted on Saturday, December 04, 2010 - 5:38 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe something on the water? Yes. The bouncing bombs? Waves? Ripples? Ripples/waves made by the planes? None of these.
Balin (Balin)
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Did they observe ships? Animals?
Jenburdoo (Jenburdoo)
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Posted on Sunday, December 05, 2010 - 12:45 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe ships? Animals? Neither.
Balin (Balin)
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Posted on Sunday, December 05, 2010 - 3:01 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Apples? Very small rocks? Bread? Ducks?

OK, seriously, my mind is going.

Seaplanes?
Jenburdoo (Jenburdoo)
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Post Number: 4210
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Posted on Sunday, December 05, 2010 - 3:20 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Apples? Very small rocks? Bread? Ducks? LOL. None of these.

OK, seriously, my mind is going. Where's it going? Coventry?

Seaplanes? No. Hint: They didn't observe physical objects.
Balin (Balin)
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Username: Balin

Post Number: 9141
Registered: 4-2010
Posted on Sunday, December 05, 2010 - 6:09 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe the wind?
Jenburdoo (Jenburdoo)
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Username: Jenburdoo

Post Number: 4211
Registered: 5-2003
Posted on Monday, December 06, 2010 - 12:17 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe the wind? No.
Balin (Balin)
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Username: Balin

Post Number: 9197
Registered: 4-2010
Posted on Monday, December 06, 2010 - 3:46 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe...wow, I'm flat out of ideas.

Did they observe something that was stationary? In motion?
Jenburdoo (Jenburdoo)
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Username: Jenburdoo

Post Number: 4217
Registered: 5-2003
Posted on Monday, December 06, 2010 - 4:29 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Did they observe something that was stationary? In motion? This.
Balin (Balin)
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Username: Balin

Post Number: 9199
Registered: 4-2010
Posted on Monday, December 06, 2010 - 1:09 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

So a non-physical object that was in motion...did they observe tides?
Jenburdoo (Jenburdoo)
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Username: Jenburdoo

Post Number: 4220
Registered: 5-2003
Posted on Monday, December 06, 2010 - 11:17 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

So a non-physical object that was in motion...did they observe tides? No.
Woubit (Woubit)
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Username: Woubit

Post Number: 1228
Registered: 5-2007
Posted on Tuesday, December 07, 2010 - 2:39 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

In an effort to reassure Jenburdoo that people other than Balin look at her puzzles, I venture to suggest that what they observed were two beams of light - one from the nose and one from the fuselage of their aircraft.

Since they (the Dam Busters) had to drop bombs from a height of almost exactly eighteen metres above the water, it was obvious that the conventional barometric altimeters of the 1940s would be completely useless. So each plane was fitted with two spotlights set at angles such that when the plane was at the desired height, the two beams of light would exactly converge.

Just as it was crucial to release the bombs from the right altitude, so it was crucial to release them at the correct distance from the target. To this end, a "bomb sight" was devised that resembled a tuning fork - it had two prongs that subtended the same angle as the towers at the end of the Möhne and the Eder Dams (rather thoughtful of the Germans to build those towers, really). When the prongs were aligned with the towers, and the beams of the lights converged on the water, the bombs would be released.

While the spotlights worked splendidly, the tuning fork did not - the Avro Lancaster did not provide the smoothest of flights at any altitude (let alone sixty feet above water in a crosswind), and the vibrations from the engines rendered the bomb sight pretty much useless. So the bombers tied a bit of elastic around a couple of struts, pulled it back after the fashion of a catapult, and released the bombs when the eye of the catapult met the centre of the dam.

The battle of Waterloo, it is said, was won on the playing fields of Eton. The former public schoolboys who made up a considerable part of No. 5 Group, Royal Air Force must have taken considerable satisfaction in dealing a blow to German industrial might by means of skimming stones, torches and catapults.

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