L’aspirisouffle Flight of fancy



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57

Mais !...qu’est-ce qui se passe ?!? Ma machine s’engage en piqué !?!

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Yikes! What’s happening? I’m going into a dive!

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Но... Какво става? Машината пикира!

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C’est normal. Comme tu fais tourner l’air, cela a tendance à te faire tourner en sens inverse.

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Only to be expected, Archie. You make the air turn, so the machine has a tendency to turn the other way.

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Много ясно. Тъй като предизвикваш въртене на въздуха, това те кара да се въртиш в обратната посока.
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C’est le principe de l’ACTION - REACTION

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It’s the principle of ACTION and REACTION

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Това е принципът ДЕЙСТВИЕ – ПРОТИВОДЕЙСТВИЕ.

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Le principe de QUOI !?!

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The principle of WHAT?

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Кой принцип?
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Anselme, si tu m’avais demandé ! Il y a beaucoup plus simple, mais tu veux toujours tout faire tout seul ! Viens, le café est prêt

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Oh, Archie – why didn’t you ask me first? There’s a much simpler way – but you always have to do it on your own, don’t you? Come on, the coffee’s ready.

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Анселм, защо не ме попита? Има и много по-лесен начин, но ти винаги всичко искаш да правиш сам. Ела, кафето е готово.

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58

Ah, ces savanturiers !

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Ah, those precipitate men in their flying-machines!

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Ах, тези мъже с вечно прибързани решения!

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C’est drôle, ce qui se passe dans une tasse de café

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It’s funny, what you can see in a cup of coffee.

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Смешно е това, което се наблюдава в чашата с кафе.

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Tu vois, quand je déplace la cuillère tout doucement, je sens seulement une faible résistance, due au frottement

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If I move the spoon very gently, I can only feel a tiny amount of resistance, due to friction…

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Виждаш ли? Когато съвсем бавно го разбърквам с лъжичката, усещам съвсем слабо съпротивление, което се дължи на триенето.

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Alors que si je la déplace vite, un tourbillon se détache

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…but if I move it quickly, an eddy breaks away from it.

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Но ако разбърквам бързо, се образува водовъртеж.
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59

Elle a des yeux ravissants

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She’s got lovely eyes

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Тя има невероятни очи!

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F = 0

Ecoulement à très faible vitesse

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F = 0


Flow at very slow speeds

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F = 0

Течение при много ниска скорост.

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Sur les dessins ci-contre tu vois comment l’écoulement autour de la cuillère se modifie lorsqu’on quitte de très faibles vitesses.

Un tourbillon se détache et un système de survitesse sur l’EXTRADOS (dessus) et sous-vitesse sur l’INTRADOS (dessous) s’établit.

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In these drawings you can see how the flow around the spoon changes as it gets away from lower speeds.

An eddy detaches itself, and this establishes a system of excess speed across the back (top) and reduced speed round the inside (bottom).

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На схемите вдясно виждаш как се изменя течението около лъжичката при увеличаване на скоростта. НАЙ-ОТГОРЕ (на повърхността) се образува водовъртеж и система със свръхскорост, а НАЙ-ОТДОЛУ (на дъното) скоростта намалява.

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EXTRADOS – SURVITESSE = DEPRESSION
INTRADOS – SOUS VITESSE = SURPRESSION

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BACK – EXCESS SPEED – LOW PRESSURE
INSIDE – REDUCED SPEED – HIGH PRESSURE

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ОТГОРЕ – СВРЪХПОВИШЕНА СКОРОСТ – ПОНИЖЕНО НАЛЯГАНЕ
ОТДОЛУ – СВРЪХПОНИЖЕНА СКОРОСТ – ПОВИШЕНО НАЛЯГАНЕ

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Apparition de la PORTANCE

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Onset of LIFT

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Поява на ПОДЕМНА СИЛА.

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60

Formidable, je vais pouvoir voler avec des cuillères !

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Terrific! I’ll make a flying spoonmobile!!

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Страхотно! Ще мога да летя с лъжички!

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L’AILE est une cuillère améliorée

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Wings are improved spoons, Archie.

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КРИЛОТО е усъвършенстван вариант на лъжичката.

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D’accord, mais où est la rotation ?

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Sure. But where’s the rotation?

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Добре, но къде остана въртенето?

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61

On retrouve an aval de l’AILE le même système de microtourbillons que derrière le cylindre tournant. Ainsi on peut considérer l’aile comme un ROTOR FIXE.

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Downstream of the wing you find the same system of tiny eddies as behind the rotating cylinder. So you can think of a wing as a FIXED ROTOR.

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Под КРИЛОТО се наблюдава същата система от микровихри, каквато има и зад въртящия се цилиндър. По този начин крилото може да се разглежда като ФИКСИРАН РОТОР.
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AILE ou CYLINDRE TOURNANT

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WING or ROTATING CYLINDER

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КРИЛО или ВЪРТЯЩ СЕ ЦИЛИНДЪР.

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Même effet sur l’air :

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Same effect on the air

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Еднакво въздействие върху въздуха:

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Attention ! Tu vas encore te casser la figure. Comme tout à l’heure cette machine, en mettant l’air en rotation, va se mettre à piquer !

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Wait! You’ll break your neck yet! You’ve still got the same problem as before. Because the machine sets the air rotating, it tends to dive!

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Внимавай! Пак ще се разбиеш! И тази машина след като завърти въздуха ще започне да пикира.
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Il faut mettre un empennage

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You need to add a tailplane.

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Трябва да си поставиш опашна част.

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62
FSCHOUF

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ФИУУУУ

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L’EMPENNAGE est une petite aile inclinée dans l’autre sens qui produit donc une portance négative et “rabat” la queue de l’AVION. Ceci empêche de s’engager en piqué.

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The TAILPLANE is a little wing tilted the other way, producing negative lift and pulling the tail down. That prevents the AIRCRAFT from going into a dive.

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ОПАШНАТА ЧАСТ е малко крило, наклонено в обратната посока, което създава отрицателна подемна сила и „дърпа” надолу опашката на САМОЛЕТА. Това му пречи да пикира.
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Regarde, Anselme, ce système est autostable.

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Look, Archie! It’s an autostable system!

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Анселм, виж - тази система се уравновесява сама!

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Moui…

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Mmm…Yes…

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Ух...

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Si on tend à s’engager en piqué la pression sur l’empennage tendra à ramener le tout en ligne de vol.

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If you start to dive, the pressure on the tailplane pushes you back into the line of flight.

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Ако се опитаме да пикираме, налягането върху опашната част ще изравни линията на полета.

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63

Même chose quand on s’engage en cabré

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The same thing happens if you climb.

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Същото ще се получи и ако се опитаме да се издигнем нагоре.

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Anselme, tu n’écoutes pas ce que je te dis !

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Archie! You’re not paying attention!

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Анселм, не ме слушаш какво ти говоря!

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Mais si, mais si…

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I am, I am! I’m hanging on your every word!

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Не, не, слушам...

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My word seems to have become misplaced.

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Думите ми като че са неуместни.

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C’est merveilleux de se sentir autostable

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It’s really dig this autostable feeling

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Чудесно е да се уравновесяваш сам.

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64

Et c’est ainsi qu’Anselme apprit à voler. Finalement c’était bête comme chou. Et son intérêt pour la science ne fit que croire avec l’altitude…

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And that, O best beloved, is ‘ow Archie ‘Iggins got ‘is wings. In the end it was as easy as pie in the sky. And ‘is scientific urges can only wiv altitude…

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Ето как Анселм се научи да лети. Беше просто като две и две четири.

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FIN

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THE END

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