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Plane that manoeuvres without flaps developed
The Telegraph ^ | 27 Sep 2010 | A.N.Other

Posted on 09/27/2010 10:46:46 AM PDT by managusta

The DEMON uses output from the jets to control airflow over the plane, manipulating lift and drag without using traditional mechanisms to steer.

Its developers believe the technology could revolutionize the stealth capabilities of military aircraft by reducing edges and gaps that can be picked up on radar.

The technology could also reduce fuel and maintenance costs for commercial airliners.

Professor John Fielding, chief engineer and lead for the DEMON demonstrator team from Cranfield University, said: ''To make an aircraft fly and maneuver safely without the use of conventional control surfaces is an achievement in itself.

The DEMON was developed around a concept called ''fluidic flight control'' and is designed to forgo the use of conventional mechanical elevators and ailerons, or flaps.

It is instead maneuvered by hundreds of tiny jets that blast air in order to influence to change the lift, drag and other features of performance.

The result is a more streamlined, aerodynamic craft that cuts down on edges and gaps - features that can increase radar detection.

Additionally it cuts down the number of moving and electrical parts in both military and civil aircraft, affecting cost, reliability, weight, efficiency and maintenance.

(Excerpt) Read more at telegraph.co.uk ...


TOPICS: Extended News; News/Current Events; United Kingdom
KEYWORDS: aircraft; flapless; stealth


1 posted on 09/27/2010 10:46:49 AM PDT by managusta
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To: managusta

Interesting but what happens if power is lost?


2 posted on 09/27/2010 10:49:20 AM PDT by Leg Olam (A pipe gives a wise man time to think and a fool something to stick in his mouth.)
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To: managusta

I’d sure like to see how it executes a barrell roll using nothing but varitions of thrust.


3 posted on 09/27/2010 10:50:15 AM PDT by Bloody Sam Roberts (A fearless person cannot be controlled.)
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To: Leg Olam

S.O.L.


4 posted on 09/27/2010 10:50:39 AM PDT by brivette
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To: Leg Olam

Looks unmanned so no harm no foul.


5 posted on 09/27/2010 10:51:04 AM PDT by rahbert
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To: Leg Olam
"...but what happens if power is lost? "

Expensive rock. Then a smoking hole in the ground.

6 posted on 09/27/2010 10:51:22 AM PDT by Bloody Sam Roberts (A fearless person cannot be controlled.)
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To: managusta
Maneuver without flaps? Already been done....


7 posted on 09/27/2010 10:52:32 AM PDT by r9etb
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To: managusta

Wait until you lose an engine (thrust) and cannot control it. Give me a Cessna 152 instead. I can land that puppy al day long with no power.

I’m assuming this has an ejection seat....


8 posted on 09/27/2010 10:52:54 AM PDT by rocket002 (99% of Democrats give the rest a bad name.)
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To: managusta
Flaps are a mechanism used to provide an increment in lift during takeoff or landing. They are not a control device. (with the exception of unique designs like flaperons)

The author of this article means elevator, aileron, rudder, etc. when they write "flap".

9 posted on 09/27/2010 10:53:02 AM PDT by avg_freeper (Gunga galunga. Gunga, gunga galunga)
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To: managusta

There’s a reason why today’s aircraft have redundancy systems.


10 posted on 09/27/2010 10:53:30 AM PDT by wastedyears (Know this, I will return to this land... rebuild where the ruins did stand)
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To: managusta
Hmm.....

Double delta platform....

Ergo the Saab Draken and the Dyke Delta.

11 posted on 09/27/2010 10:54:05 AM PDT by taildragger ((Palin / Mulally 2012 ))
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To: Leg Olam

Most modern fly-by-wire stability augmented aircraft become tumbling bricks when they lose power.


12 posted on 09/27/2010 10:56:37 AM PDT by avg_freeper (Gunga galunga. Gunga, gunga galunga)
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To: r9etb
Wing warping, yes. Don't see a lot of that anymore. At least not by choice.
13 posted on 09/27/2010 10:58:31 AM PDT by avg_freeper (Gunga galunga. Gunga, gunga galunga)
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To: r9etb

Agreed by some very smart men who also built the engine and designed the propellers as well.


14 posted on 09/27/2010 10:59:52 AM PDT by Cheetahcat (Zero the Wright kind of Racist! We are in a state of War with Democrats)
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To: avg_freeper
Wing warping, yes.

Exactly ;-)

Don't see a lot of that anymore. At least not by choice.

I saw an article about it a couple of years back ... something about modern technology making it more possible. It would have some advantages over the blown-air approach....

15 posted on 09/27/2010 11:01:14 AM PDT by r9etb
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To: r9etb

“Maneuver without flaps? Already been done....”

There may not be flaps on the main wings, but vertical flap in front and horizontal flap at the back were used to steer the plane.


16 posted on 09/27/2010 11:02:30 AM PDT by DrC
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To: avg_freeper
Ah, yes.... Here it is: NASA Tests Show Wing Warping Controls Aircraft at High Speeds
17 posted on 09/27/2010 11:02:53 AM PDT by r9etb
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To: managusta

No flaps eh?

Then what are those flappy looking things on the back of the wings?


18 posted on 09/27/2010 11:04:03 AM PDT by green iguana
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To: DrC
There may not be flaps on the main wings, but vertical flap in front and horizontal flap at the back were used to steer the plane.

Roll control was provided by changing the shape of the wings to produce a differential lift.

19 posted on 09/27/2010 11:05:49 AM PDT by r9etb
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To: avg_freeper

“Most modern fly-by-wire stability augmented aircraft become tumbling bricks when they lose power.”

That is why all pilots love Martin Baker the standard by which ejection seats are measured.


20 posted on 09/27/2010 11:06:14 AM PDT by cpdiii (Deckhand, Roughneck, Geologist, Pilot, Pharmacist, Iconoclast: THE CONSTITUTION IS WORTH DYING FOR.)
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To: managusta
Uh. You don't use flaps to control the direction of flight. (They're used to change the flight envelope of the wings, usually so they will work like wings at lower speeds than normal cruise.)

ML/NJ

21 posted on 09/27/2010 11:07:01 AM PDT by ml/nj
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To: managusta
Boundary layer/forced air blowing designs like this employs are very sensitive to wing surface conditions; i.e. bugs, rain and stuff.

Of course so is a lot of LO technology so may be it's something the operator would already have to consider.

22 posted on 09/27/2010 11:07:13 AM PDT by avg_freeper (Gunga galunga. Gunga, gunga galunga)
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To: managusta

“The DEMON was developed around a concept called ‘’fluidic flight control’’ and is designed to forgo the use of conventional mechanical elevators and ailerons, or flaps. “

Back when I was in airplane school, we’d laugh at presstitute “experts” who made idiotic statements like this...


23 posted on 09/27/2010 11:07:13 AM PDT by stefanbatory (Insert witty tagline here)
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To: green iguana
Then what are those flappy looking things on the back of the wings?

There are no flaps on this plane. Those are not flaps that you see there.

24 posted on 09/27/2010 11:08:45 AM PDT by al_c (http://www.blowoutcongress.com)
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To: avg_freeper
Not exactly. They don't “tumble.”

F-16, perhaps as it is inherently unstable, but not the F-15 or F-18.

Loss of power does not cause an issue, per se, it is the loss of hydraulic power, as the flight controls are hydraulically actuated. Lose an engine, windmilling keeps some hydraulic pressure and ensures some flight control.

Just to be clear.

25 posted on 09/27/2010 11:10:54 AM PDT by Hulka
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To: managusta

Already done.

Al Haynes/UA 232.

Worked out fine, except for that little problem of losing a third of your passengers and can’t use the airplane again.


26 posted on 09/27/2010 11:11:00 AM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: DuncanWaring

27 posted on 09/27/2010 11:13:21 AM PDT by McCloud-Strife ( USA 1776-2008)
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To: green iguana
Then what are those flappy looking things on the back of the wings?

Technically, they are called ailerons. See how they are offset, on the right up and on the left down.. to cause a roll. There is no rudder (vertical stabilizer), tailplane (horizontal stabilizer) or "flaps" which are extended to increase lift on take-off and landing.

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

28 posted on 09/27/2010 11:13:59 AM PDT by dalight
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To: rocket002

For what, it is unmanned.


29 posted on 09/27/2010 11:14:38 AM PDT by BooBoo1000 ("He will pour out his anger and wrath on those who live only for themselves' Romans 2:8)
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To: r9etb

Beat me to it.


30 posted on 09/27/2010 11:15:21 AM PDT by Lee'sGhost (Johnny Rico picked the wrong girl!)
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To: managusta

Sure looks like it has flaps to me.


31 posted on 09/27/2010 11:16:09 AM PDT by Lee'sGhost (Johnny Rico picked the wrong girl!)
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To: green iguana
Then what are those flappy looking things on the back of the wings?

I think that the aircraft most definitely has some control surfaces that are deflected in a conventional manner. But it also has a few that do not deflect but are hooked up to tubes for blowing.

The aircraft seems to just be a technology test-bed where conventional control surfaces can be swapped out for the forced-air kind.

32 posted on 09/27/2010 11:16:33 AM PDT by avg_freeper (Gunga galunga. Gunga, gunga galunga)
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To: Hulka
"Not exactly. They don't “tumble."

F-117.

33 posted on 09/27/2010 11:19:09 AM PDT by avg_freeper (Gunga galunga. Gunga, gunga galunga)
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To: Hulka
What I'm saying is that there exist some aircraft that are dynamically unstable and only marginally statically stable.

It is only a series of computers voting on how to interpret pilot requests that differentiate planes like the F-117 from a tumbling brick.

34 posted on 09/27/2010 11:23:51 AM PDT by avg_freeper (Gunga galunga. Gunga, gunga galunga)
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To: Leg Olam

If it loses power, it becomes a lawn dart


35 posted on 09/27/2010 11:28:00 AM PDT by GeronL (http://libertyfic.proboards.com <--- My Fiction/ Science Fiction Board)
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To: managusta

Aircraft don’t use flaps to “manoeuvre” with, they use ailerons, rudder and elevator. Flaps increase lift allowing steeper approach and departure angles without increasing airspeed requirements.


36 posted on 09/27/2010 11:30:20 AM PDT by theymakemesick ( islam - inspired by Satan www.prophetofdoom.net)
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To: Leg Olam

Power loss indicates it is “Time for a quick trip around the beads and ‘over the side’.”


37 posted on 09/27/2010 11:32:56 AM PDT by GladesGuru (In a society predicated upon freedom, it is essential to examine principles,)
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To: green iguana
Then what are those flappy looking things on the back of the wings?

I wouldn't be surprised if these actually functioned as "flaperons" the inner surfaces acting more like flaps on take-off and landing and still being available for in-flight attitude correction. I believe they are far more important than the writer implies because they are likely are extremely important to making it possible for the thing to fly.

However, On the leading edge you can almost see holes so they could be controlling the flow of air across this as some older low speed takeoff and landing craft did in the past. The white section is most probably fixed and has air piped to it as well, you can see the holes on the trailing edge in this section and the air hoses.

These probably give two different sets of holes airflow based on wanting to bias the wing to lift or descend. This is probably what they are going on about. In at speed stable flying, the "flaperons" just act like wing surface and control is provided by altering the ducting of air to these surfaces.

38 posted on 09/27/2010 11:33:56 AM PDT by dalight
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To: avg_freeper
Ok. . F-16 and F-15.

Statement I was responding to was encompassing, which as you know, is not true.

39 posted on 09/27/2010 11:37:01 AM PDT by Hulka
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To: avg_freeper

Thanks for clarifying your statement.


40 posted on 09/27/2010 11:38:51 AM PDT by Hulka
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To: McCloud-Strife

AH my favorite the Black Widow. This sure seemed like a winner to me and I pray it’s being secretly developed under a secret project.


41 posted on 09/27/2010 11:39:37 AM PDT by mcshot (The only thing Barry said that I believe is that he was born in Kenya - YouTube)
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To: green iguana
Then what are those flappy looking things on the back of the wings?

Hey, who you gonna believe, Them or your lyin' eyes?

42 posted on 09/27/2010 12:27:38 PM PDT by Drill Thrawl (Palin Haley O'Donnell - mmm mmmm mmmmmmmmm)
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To: managusta

Hey that’s nothing. In the White House we have a Teleprompter of the U.S. who speaks without a brain.


43 posted on 09/27/2010 12:37:17 PM PDT by pleikumud
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To: DUMBGRUNT

ping


44 posted on 09/27/2010 12:50:46 PM PDT by mountn man (The pleasure you get from life, is equal to the attitude you put into it.)
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To: managusta

The Wright brothers’ planes maneuvered without flaps.


45 posted on 09/27/2010 1:05:18 PM PDT by RoadTest (Religion is a substitute for the relationship God wants with you.)
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To: Leg Olam
Interesting but what happens if power is lost?

The Pilot's pucker factor shifts into Hyperdive.

46 posted on 09/27/2010 1:22:29 PM PDT by usmcobra (.Islam: providing Live Targets for United States Marines since 1786!)
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To: avg_freeper

You reminded me of this plane,

http://en.wikipedia.org/wiki/Northrop_X-21


47 posted on 09/27/2010 1:27:27 PM PDT by Hillarys Gate Cult
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To: managusta

Doesn’t have a prayer with a name like DEMON.


48 posted on 09/27/2010 1:41:44 PM PDT by getarope (One Big Ass Mistake, America!)
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To: managusta
This reminds me of one of my favorite experimental planes, the Messerschmitt Me 163 Komet:


49 posted on 09/27/2010 1:46:33 PM PDT by Brett66 (Where government advances, and it advances relentlessly , freedom is imperiled -Janice Rogers Brown)
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