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#1351 gruntguru

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Posted 22 May 2014 - 03:30

I wonder if this principle could be applied to mechanical systems? Perhaps instead of climbing vertically up a cliff we could build a gently sloping ramp and raise our mass to the top using a much smaller (lateral) force?



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#1352 Feliks

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Posted 23 May 2014 - 07:50

I wonder if this principle could be applied to mechanical systems? Perhaps instead of climbing vertically up a cliff we could build a gently sloping ramp and raise our mass to the top using a much smaller (lateral) force?

Yes, it kest theoretical justification for such of my projects. Surely Venturi nozzle tp jrst curled wing .. and has the same aerodynamic drag on profits .

 

redbaron%20spoon.jpg

 

dedal%20feliks.jpg

 

Here, instead of a generator, it can be assumed propeller ..

 

Andrew :smoking:  :smoking:



#1353 Greg Locock

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Posted 25 May 2014 - 22:29

Show that drawing to Paul MacReady and he'd die laughing. 



#1354 desmo

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Posted 26 May 2014 - 00:50

Paul B. MacCready, Jr. (September 29, 1925 - August 28, 2007) We'd have to resurrect him first.  :lol:



#1355 RogerGraham

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Posted 26 May 2014 - 02:35

Surely you don't even need a propeller?  Just give the plane a little push, and the magic venturi will get it going faster and faster...



#1356 Greg Locock

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Posted 26 May 2014 - 03:27

...or wait for a merest waft of a headwind and the thing will go faster so the thrust will get greater and so it'll go faster and so on and so forth and  then it'll reach the speed of sound and then, well who knows what will happen in this new universe? Meanwhile back in our universe the irate pilot will jump out, tear the wretched drag causing device off, and start pedalling.



#1357 gruntguru

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Posted 26 May 2014 - 05:17

:)

 



#1358 V8 Fireworks

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Posted 26 May 2014 - 08:22

Yes, it kest theoretical justification for such of my projects. Surely Venturi nozzle tp jrst curled wing .. and has the same aerodynamic drag on profits .

 

redbaron%20spoon.jpg

 

What's the cavity for in the airfoil?  A magic bullet to prevent stall on this contraction?  :confused:   :lol:

 

http://ltces.dem.ist...pers/11.3_4.pdf

http://colonius.calt...olonius2011.pdf

 

Edit - It's a blown slot? 


Edited by V8 Fireworks, 26 May 2014 - 08:23.


#1359 Wuzak

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Posted 26 May 2014 - 08:34

What's the cavity for in the airfoil?  A magic bullet to prevent stall on this contraction?  :confused:   :lol:

 

http://ltces.dem.ist...pers/11.3_4.pdf

http://colonius.calt...olonius2011.pdf

 

Edit - It's a blown slot? 

 

It's a vaccum generator, used to power wind turbines. Allegedly.



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#1360 Feliks

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Posted 26 May 2014 - 16:59

Thanks Desmo of reminding us of the man who he liked the various interesting things to do .. 

http://en.wikipedia....i/AeroVironment

 

Wuzak you're right .... :wave:

 

This V8 Fireworks do not read my posts carefully and do not know that the inside of the wings is ... nothing ..

 

Well it looks like jeszce wing in cross-section, ie Naca Felix. and this is the name of the family that founded and requires determine what gaps, gfzie placed on which profiles also those bumps to the network, probably can be hundreds of types ..

 

airfoil2.jpg

 

Here .. I will do my prototype which acts from the top of the second wing multiplied by quantity and quantity received vacuum ..

 

Of course, you should quite carefully chosen angles of attack these wings and the distance between them ....

 

 

 

Then the pair of wings are fastened to the treadmill, instead of oxen to the appropriate spin speed and expected energy .... :lol:

 

kierat2.JPG



#1361 gruntguru

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Posted 26 May 2014 - 22:58

My money is on the oxen.



#1362 Siddley

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Posted 28 May 2014 - 01:28

Floating airliners ? give me a break. The hydrodynamic loads on the engine pods will probably tear the airframe to pieces when it's ditched.
Airliners do not have a good track record of landing in the sea, despite a couple of incidents where a skilled crew put them down in a river.

 

 

When a Beau goes in,
Into the drink,
It makes you think,
Because, you see, they always sink
But nobody says "Poor lad"
Or goes about looking sad
Because, you see, it's war,
It's the unalterable law.

Although it's perfectly certain
The pilot's gone for a Burton
And the observer too
It's nothing to do with you
And if they both should go
To a land where falls no rain nor hail nor driven snow —
Here, there, or anywhere,
Do you suppose they care?

You shouldn't cry
Or say a prayer or sigh.
In the cold sea, in the dark
It isn't a lark
But it isn't Original Sin —
It's just a Beau going in.



#1363 Feliks

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Posted 28 May 2014 - 04:22

Posted Today, 04:22
gruntguru, on 27 May 2014 - 00:58, said:
My money is on the oxen.. /quote
 
 
 
 
 
 

.

 

Oxen can become sick and will die. Besides then you must have 3 pairs of these oxen after 8 hours of work .. You know how much they eat ?  Not unless you are very rich .. :rolleyes:

 

can be several such pairs of wings with several compartments assemble and put on the ends of the pipes that supersede the broken windmill propeller .. There, at the end of the speed will be about 1 Mach .. Now you are at the disposal of the entire lift (lift) or how to get from the calculation of the efficiency of the above , about 7% of it you'll already have excess energy for 24 hours...

 

of course, each chamber will give others a vacuum, and therefore they must propel the various dimensions of the turbine, but connected on one axis ..

 

then are the chances of get sick of the high efficiency ..

 

The most important thing .. You know that the oxen have yet to clean up? .. :lol:

several%20chambers.jpg

5-1332-5-mw-bard-near-shore-wind-turbine

 

 

 

Andrew  :smoking:  :smoking:


Edited by Feliks, 31 May 2014 - 09:16.


#1364 Feliks

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Posted 09 June 2014 - 13:57

No, if anyone can stop the "Physics" from the next disaster? . I do not have the strength to tell you how you should do it ... with 2-meter tunnel adjacent to one another and having a hole at the top, through which a whole this stuff will affect them, and can be removed .. This method of freezing is crazy dangerous because it can destabilize the ground beneath the reactors .. Every physicist should know that water freezes into ice, its volume increases by 10% .. why iceberg floats .. ai thanks on the road doing spring breakthroughs .. and here such a "breakthrough" they want to do the reactors, which may lead them, the 40-meter deep freeze, to improve the soil by 10%, which is 4 meters .. what happens to them, it is not difficult to foresee * as it has imagination, and not just academic titles ... If someone does not know what it is ice here, please : http://en.wikipedia.org/wiki/Water .. Besides, this water accumulates on the ice must continue to have some outlet, because it is not a "black hole" ... Help!

 

http://www.bbc.com/n...d-asia-23940214

 

Andrew  :mad:


Edited by Feliks, 09 June 2014 - 14:03.


#1365 gruntguru

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Posted 09 June 2014 - 22:36

Groundwater typically occupies less than 30% of the volume - the other 70%+ being soil/rock. The total expansion on freezing will be less than 3% - less than 1% along each orthogonal axis.



#1366 imaginesix

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Posted 10 June 2014 - 04:08

After following this thread for nearly a decade,all I have learned is that Solidworks needs to be much, much harder to use.

#1367 Feliks

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Posted 10 June 2014 - 08:27

Groundwater typically occupies less than 30% of the volume - the other 70%+ being soil/rock. The total expansion on freezing will be less than 3% - less than 1% along each orthogonal axis.

Thanks for the information gruntguru .. but here we are dealing, not with the usual groundwater, about which you write .. speaking of "dam" made of ice, which is to keep the rest of the underground river, which is 100% water .. It will be It accumulate at the ice dam and creates an underground lake, which will gradually freezing, teeth get established tightness. and then this accumulated water, 100% water is frozen as a result of the dam of neighboring ice .. In the case of ordinary groundwater that do not are working as a dam for flowing water, but remain alone, is probably just as you write. But unfortunately, flowing water all the time and stopped by an ice dam, the freeze are 100% water. Besides, this way, do NOT give any chance to extract from the ground corrium, which certainly is leaking from damaged reactors into the ground, but directly into the reactors .. and can be already much deeper than those established 40 meters. That is why I am apprehensive, however,

 

Andrew  :wave:



#1368 gruntguru

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Posted 10 June 2014 - 10:00

I doubt the underground river is 100% water i.e. water flowing through a cave. They are usually just groundwater moving through porous rock formations.



#1369 Kelpiecross

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Posted 10 June 2014 - 12:45

I thought the ice-wall idea was a good one - and it would probably work.

Reminds me of a technique that plumbers use - freezing a pipe with liquid nitrogen each side of an area of the pipe that needs repairs or alterations etc. so they don't need to shut the water off at the mains.

#1370 RogerGraham

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Posted 10 June 2014 - 13:11

Getting completely off-topic, but...

 

Here in Hong Kong, they dig a lot of tunnels, and there were some articles recently on causes for delays on some of the big'uns.  Turns out that sometimes they're digging through quite wet ground, and they need to install a hojillion pipes to freeze the ground before they can safely dig out the tunnels.  Maybe not news for some readers of this thread, but it fascinated me!  It's one of things that at first you think "Sounds like it'll work, but surely there's an easier way?", but apparently it's the easiest way.



#1371 Siddley

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Posted 10 June 2014 - 13:36

After following this thread for nearly a decade,all I have learned is that Solidworks needs to be much, much harder to use.

 

If I had a euro for every time I have seen people posting pictures of bright ideas they designed with Solidworks, but couldn't actually be manufactured ( short of using 5 axis mills, wire edms, special machines that can drill left handed square holes round corners etc etc ) -  and if it could be manufactured wouldn't work as designed anyway - I'd have........quite a lot of euro's

I use pencil and paper now :-

 

1) It's cheaper than even a pirate copy of Solidworks ( counting the two days it'll take to install it, the instructions always being in some unknown cyrillic language )

2) Well made technical drawing sets are cool, like slide rules
3) Has multiple levels of undo ( called a rubber, or eraser for our American friends )

4) Comes with Finite Element Analysis ( " that element looks strong enough, I'm finished here " )

5) Advanced rendering options ( you can colour it in if you like )



#1372 Feliks

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Posted 10 June 2014 - 15:01

Underground sarcophagus must be the first in Fukushima...

 

 

fuku.jpg

 

 

Andrew :smoking:

 

 

Here, as the tunneling doing in the world, quickly and as cheaply ...

 

 

herenkneft.jpg

 

 

 

:smoking:  :smoking:

 

 

Getting completely off-topic, but...

 

Here in Hong Kong, they dig a lot of tunnels, and there were some articles recently on causes for delays on some of the big'uns.  Turns out that sometimes they're digging through quite wet ground, and they need to install a hojillion pipes to freeze the ground before they can safely dig out the tunnels.  Maybe not news for some readers of this thread, but it fascinated me!  It's one of things that at first you think "Sounds like it'll work, but surely there's an easier way?", but apparently it's the easiest way.

 

 

So this is a good idea to do tunnels, where several meters around is to freeze the ground, and not to rescue the extensive failure of nuclear power ... Also comparing methods domestic plumbers to repair the damaged pipe is not well to save a nuclear power plant. . Especially because I see that these comparisons, defend this method of freezing, show that many do not distinguish between the situations in which these methods are used, which raises my even greater concerns about the effects that can be ..

 

Andrew :smoking:



#1373 gruntguru

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Posted 10 June 2014 - 23:20

Its probably a case of "if they could think of a better way - they would do it".



#1374 Feliks

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Posted 11 June 2014 - 08:39

Well, the couple is also reasonable and imagination of people .. I do not feel so lonely .. :rolleyes:

 

http://enenews.com/j...#comment-531509

 

Andrew  :wave:



#1375 Feliks

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Posted 15 June 2014 - 17:40

Gdybym miał euro za każdym razem widziałem ludzi opublikowania zdjęcia z błyskotliwych pomysłów one zaprojektowane z SolidWorks, ale nie może być rzeczywiście wyprodukowanej (krótki przy użyciu 5 osi EDMS młyny drutu, specjalne maszyny, które może wiercić otwory kwadratowe leworęcznych okrągły narożniki itp itd) - i jeśli to może być wykonane nie przebiega tak, jak w każdym razie - Musiałbym ........ sporo euro używam ołówka i papieru obecnie: -
 

 

1) Jest to tańsze niż nawet kopii pirackiego oprogramowania SolidWorks (licząc dwóch dni zajmie to, aby go zainstalować, instrukcje zawsze jest w jakimś nieznanym języku cyrylicy)

2) Dobrze wykonane zestawy do rysunku technicznego są fajne, jak suwaki
3) ma wiele poziomów cofania (zwane gumy lub gumki dla naszych amerykańskich przyjaciół)

4) Pochodzi z Metody Elementów Skończonych ("ten element wygląda na tyle silny, że skończyłem tutaj")

5) Zaawansowane opcje renderowania (można pokolorować go, jeśli chcesz)

 

 

1505175.jpg

 

https://www.plm.auto...nt-download.cfm

 

http://www.solidedge...ree-2d-download

 

Andrew  :wave:



#1376 Feliks

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Posted 23 July 2014 - 21:15

Here are many pictures of these in one movie ..
 
 
Andrew  :wave:


#1377 Feliks

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Posted 21 August 2014 - 10:17

Here historical figure .. then only the best solution was graph paper .. Figure was every day for 1 month used, when did this lathe crankshaft. The crankshaft has five supports and four crank, 90 degrees .. starting weight of the material (iron containing 5% cobalt) was 80 kg (160 lb) is the world's first practical crankshaft timing ..
 
 
1b.jpg
Andrew  :wave:

Edited by Feliks, 21 August 2014 - 10:18.


#1378 Feliks

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Posted 22 August 2014 - 22:51

And here's how it looks in the original .. It is not enough to come up with a way to the engine ... still need to know how to realize ... only together give a true effect ..
 
[img] wal6.jpg
 
Andrew :wave:

Edited by Feliks, 22 August 2014 - 22:55.


#1379 Feliks

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Posted 05 November 2014 - 21:16

Greetings to all from the Engine Expo 2014 in Novi Detroit ....
 
EXPO.jpg
 
EMYFORUM.jpg
 
Eplaque.jpg
 
 
I'm worried, because you will be some news about this new engine somehow obtain. As I wrote above, only 25% of the engines messages may come in handy .. The rest 75% you have to re-learn ..  :rolleyes:
 
Regards Andrew :smoking:  :smoking:


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#1380 DaBeRa

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Posted 05 November 2014 - 22:32

This thread is the most entertaining one the whole internet! Keep the stream going Felix! Sorry you did got disconnected on the danish forum.....



#1381 NeilR

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Posted 06 November 2014 - 07:44



#1382 desmo

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Posted 06 November 2014 - 15:59

Nice. I assume a cut down radial, looks like from a six maybe. Nice lumpy idle, though not quite as distinctive as that of a 45 degree twin. I also love the thin pitch finning on the heads, looks more purposeful than the usual coarse stuff.

#1383 Feliks

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Posted 18 November 2014 - 22:16

Here are the materials you can download a PDF of the conference .. I am at the end of the first day, as it was in the schedule
 
 
 
Andrew :smoking:


#1384 gruntguru

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Posted 19 November 2014 - 07:41

Nice. I assume a cut down radial, looks like from a six maybe. Nice lumpy idle, though not quite as distinctive as that of a 45 degree twin. I also love the thin pitch finning on the heads, looks more purposeful than the usual coarse stuff.

Apparently from Pratt & Whitney R1340.

 

I like the synchronised throttles.



#1385 Feliks

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Posted 19 November 2014 - 09:34

o yes ,

 

Apparently from Pratt & Whitney R1340.

 

I like the synchronised throttles.

Yes

 bmw2002 tii Solex PHH40

 

 

:wave:



#1386 gruntguru

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Posted 19 November 2014 - 10:41

No the SU's.



#1387 Feliks

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Posted 17 December 2014 - 02:12

Santa Claus is always something for Christmas will bring a gift. This year a new type of Venturi nozzle ..
Christmassy greetings
                                 
 
 
 
venturif.jpg
Andrew  :smoking:  :wave:

Edited by Feliks, 24 December 2014 - 18:59.


#1388 gruntguru

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Posted 17 December 2014 - 05:21

Rochester venturi.

 

(with attribution to J.A.W.)



#1389 Feliks

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Posted 24 December 2014 - 19:47

Before I made with cast iron heads, first I made a model of plywood comp. as you can see, the intake windows were on both sides of the head., but as I started to count the inlet surfaces, it turned out that the total window area of the inlet, is much greater than the surface of the cylinder bore intake ... is 6.2 cm, or 30 cm surface .Circumference square of this cylinder is 19.5 cm, as you can see in the picture plywood3, windows may be by 2/3 of the circumference of the cylinder, which is 13 cm ..but they are high up on the 2.5 cm .. that is, their total area is 32 5 cm square ... so and so will be the smallest spot diameter of the cylinder inlet. The primary piston is only 1 cm bigger than the cylinder, so I thought that the windows on one side will be sufficient ..
 
plywood.JPG
plywood1.JPG
plywood2.JPG
plywood3.JPG
plywood4.JPG
 
Andrew
Merry Christmas  :wave:


#1390 Feliks

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Posted 28 December 2014 - 23:20

Quote:
Originally Posted by FM View Post
All that was not my point. 
(Felix/Andrew) ''I think that you should carefully read my poste, and certainly you will become a proponent of my solutions, and we will not have to cry after drowning our children in the future''
Any translations can and will be misconstrued. Many times it's changed into something reverse all because of one word and it's meaning. 
.
OK, as per foam in the unused cavities of airplanes as flotation. 
If it were solidly attached, it would take away the flexibility of the wing thus becoming brittle. BAD 
One cannot loosely insert it either, it will vibrate into something that needs to move. And in a crash, it will float away. BAD 
Any foam is weight, that airplanes don't need. The empty fuel tanks are supposed to float, when not damaged. BAD 
 
"IF" metal can be made with micro air pockets throughout its material and still be strong, it could/would work. GOOD 
I also suggested Helium in all the vacant spaces, the amount that can be stored is minimal. SAD 
This was something I talked about about 50 years ago in science class. But back then technology of materials was still in its infancy. 
 
 
SOOOoo, we still live and learn. 
 
 
______________
Have a THINK on this, Anti-Gravity and Solar Waves.Quote
 
 
 
So you do not have to wait long for a feed proved that once again we have affair with a sunken airplane ... Meanwhile, he also flew from Krakow to Detroit twice across the Atlantic and A340 and Jumbo aircraft. I sat by the window and watched the wings and I thought about the foam. However, I think that it would really help
Can only tell you to do so: in special forms do some moldings, located very loosely in the spaces provided to fill. These profiles can be very much Obviously done a good proven polystyrene. Now this: you have each of these shapes covered with a soft and very durable sponge rubber on the thickness of 5 mm .We will protect it from vibrations and movements fitting styrofoam plates. Also, will not be affected on a vibrating plate. The argument that all this will increase the aircraft Tare is the argument of a man who himself did not ask how much trouble counting foam airplane needs to not sink. So I counted, and calculations show that the hedgehog plane will have 1% of its weight in the foam inserted into the cavities, it is no longer sink .. 1% of it is really a negligibly small. This is so that even on very sensitive weight, this can not be measured at all .. So the weight is negligible, and it can not be an argument against inserting foam .. I much in his life flew planes in the former USSR with concerts Polish bands (about 100 flights) Sometimes, even in the cockpit, as we had a charter plane to piped music .. I know that I would willingly pilots landed on the water, because it reduces the risk of fire, but need to have confidence that the plane did not sink ..Andrew


#1391 gruntguru

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Posted 30 December 2014 - 08:58

How about strategically located rubber bladders and compressed air cylinders?



#1392 Greg Locock

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Posted 30 December 2014 - 09:25

Hmm, I think you are on to something there. 



#1393 Kelpiecross

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Posted 30 December 2014 - 10:09

Airliners rarely land gently in the water like the Hudson incident (where flotation would have been useful)  -  they usually go in at 500mph or so.

 

 What about "Anti-Gravity" etc.?          



#1394 gruntguru

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Posted 30 December 2014 - 22:02

Based on 2 crashes this year, even a system that could pop the fuselage up from the bottom might be useful.



#1395 imaginesix

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Posted 31 December 2014 - 00:12

Didn't someone here suggest hundreds of small parachutes attached to every bit of the plane, so it always has a soft-ish landing even if it breaks up in midair? The extra weight could be compensated for by the removal of all the redundant systems on board, maybe? More failures, fewer crashes.


Edited by imaginesix, 31 December 2014 - 00:12.


#1396 gruntguru

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Posted 31 December 2014 - 01:26

That is pure genius.



#1397 Greg Locock

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Posted 31 December 2014 - 02:51

feliks, how did the SAE conference go?



#1398 Wuzak

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Posted 31 December 2014 - 03:03

I still don't think foam will add buoyancy. It is, after all, heavier than air.

 

The only chance is if it stops water ingress.

 

Where are the unused spaces on an aircraft? 

 

In the wings? Which tend to snap off in hard landings on water.

 

You can't put it in the luggage area at the bottom of the aircraft.

 

You can't put it in the passenger compartment.

 

You can't put it in the flight deck. 

 

You can't put it in the wheel wells.

 

You can't put it in the avionics bays.

 

1% by weight may seem negligible, however:

 

A 747-400's empty weight is 178,756kg. 1% of that is 1,787.56kg. What volume of foam is required to get that weight?

 

A 747-400's maximum take-off weight is 396,890kg. Will 1% by weight of foam on empty weight maintain buoyancy at that weight?

 

A 747-400's maximum fuel load is 216,840l, or roughly 173,472kg. So the foam would be about 1% of the fuel capacity. Airlines won't cut passenger numbers, because it would be uneconomic to fly. They could cut stewards, but passengers will miss the service and choose not to fly that airline again. I doubt there is much unwanted equipment they could throw overboard. So it would be fuel they are most likely to cut. Though most journeys aren't made with full fuel, so the foam plane may still be under MTOW. 

 

And an airliner that hits the water will almost certainly take on water in the parts of the aircraft that can't be filled with foam. Causing it to sink.

 

But let's put things into perspective. 

 

How many aircraft have hit the water in this year? 2? How many hit the water in such a way that floating would be possible? 0?

How many flights have there been by commercial airliners this year?

 

More people have died on Australia's roads this year than have died in aircraft crashes. There have been 22 crashes this year, 8 involving passenger aircraft. There have been 992 fatalities, the second most in a year, the record being 1014 in 2005.

 

The chance of dying in any single flight with a major airline is 1:4.7 million. Lifetime chance of dying in a plane crash is 1:8,357. You are more liekly to die from heat exposure (1:8,321), choking (1:3,649), in an accident as a pedestrian (1:723), a fall (1:152) or accidental poisoning (1:119).

 

http://www.cnbc.com/id/102301598#.



#1399 desmo

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Posted 31 December 2014 - 04:46

If even *one* single life can be saved...!

There's an ever dangerous line of thought.

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#1400 Feliks

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Posted 31 December 2014 - 11:02

Airliners rarely land gently in the water like the Hudson incident (where flotation would have been useful)  -  they usually go in at 500mph or so.

 

 What about "Anti-Gravity" etc.?          

"The fact that one person put on a life jacket suggests those on board had time before the aircraft hit the water, or before it sank.

And yet the pilots did not issue a distress signal. The plane disappeared after it asked for permission to fly higher to avoid bad weather.

"This morning, we recovered a total of four bodies and one of them was wearing a life jacket," Tatang Zaenudin, an official with the search and rescue agency, told Reuters."

Andrew :(

 

You right Desmo..


Edited by Feliks, 31 December 2014 - 11:05.