2015 Novembre

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30 Novembre 2015

Square profile imgXTI Aircraft Company

 

The future is now. Lift Up. Jet Out.$16,113,863

XTI Aircraft Company

A powerhouse team, including former chief executives from Sikorsky and Cessna, have come together to change how we fly, connect, and reach new possibilities with XTI Aircraft. After years of engineering as well as extensive market and business planning, they have unveiled a revolutionary piece of aviation technology. This Changes Everything.

Denver, CO

Aviation enthusiasts have been dreaming about an airplane like the TriFan 600 for over 100 years. XTI is about to place all of us on the doorstep of a new era of flight. To those of you who have already participated in our equity crowdfunding campaign – thank you.

To those of you who still desire to participate and be a part of history, now is your chance. Following our filing for SEC qualification and being awarded with Popular Science’s top prize “Best of What’s New 2015” we invite all of you to join us on this journey.

Four Visionaries. One Vision. United in the quest to be a part of something bigger, the XTI Aircraft team has been rethinking how we travel. Reaching beyond traditional limitations, to develop an aircraft that combines a helicopter’s ability to take off and land from almost anywhere, at speeds and ranges comparable to typical private jets.

The XTI leadership team brings decades of experience to this endeavor, including success in building and growing multi-billion dollar aviation companies and playing a pivotal role in returning significant value to those companies’ shareholders.  For example, Jeff Pino (Vice Chairman of XTI), grew Sikorsky Aircraft Corporation from a $2 billion to a $7 billion company during his tenure as chief executive.  Sikorsky Aircraft Corporation is now being acquired by Lockheed Martin for $9 billion.

 

Meet the TriFan 600. This six-seat, vertical takeoff and landing airplane provides unprecedented freedom by transporting you door-to-door, rather than airport-to-airport.  Designed to fly as fast, as high and above predominant weather, and as far as other business jets, to more places and in a shorter period of time.

Stepping aboard, you discover unparalleled cabin space, offering enormous flexibility for the distinctive needs of our customers. Depending on those needs, you might enter to discover a medical evacuation or air ambulatory configuration, with a horizontal stretcher and three seats for medical personnel or patient companions. Or for the most discerning business or personal needs, you might find perfectly shaped modern luxury with its exceptionally spacious interior adorned with elegant surfaces and intelligent high-tech features.  Whatever the requirements, the TriFan 600 offers pressurized cabin comfort with accommodating capability.

By merging advanced, proven technologies in a revolutionary design, XTI Aircraft aims to change the way the world flies. And now they’re giving everyone the chance to be a part of it. What XTI is attempting today is not a new-technology revolution; it’s an evolution of new applications for existing technology. This reduces risks associated with manufacturing and certifying the TriFan 600.

The unique configuration, advanced ducted fan and other proven technology, and lightweight materials give the TriFan 600 a speed, range, and level of comfort comparable to most private jets, with one supreme advantage – unparalleled travel flexibility that’s only possible when you forget the highway, and lose the runway.

Using three ducted fans, the TriFan 600 lifts off vertically. In seconds, the two wing fans rotate forward for a seamless transition to high-speed flight. And within just 90 seconds, the aircraft reaches cruising speed – where, just like every other fixed-wing airplane, the wings provide lift. The fuselage-mounted fan, no longer needed, closes up. The airplane flies directly to its destination and reverses the process, landing vertically right where it needs to be – over a clear helipad sized paved surface.

No traditional jet, helicopter, or VTOL can fly you directly from point A to point B with the range, speed, or operational flexibility needed for true efficiency. The TriFan 600 is a new type of aircraft, with an entirely new combination of capabilities potentially saving hundreds of hours a year.

This is only the beginning. No other jet, helicopter or other aircraft opens the same world of possibilities.  These are just some of the market opportunities we’ve envisioned. We have no doubt as the technology grows in popularity the implications will also grow in ways we haven’t imagined. Join us in our journey and imagine the possibilities with us.

Personal aircraft transportation is a booming, billion-dollar industry. Around the world, businesses and individuals who want to get to their destinations faster choose to travel via personal aircraft. In fact, a recent survey shows that reducing transportation time makes up 84% of reasons why people choose personal aircraft. And, with the addition of aircraft chartering services aimed at lowering cost of entry with membership models, the market has literally never been hotter.

Purchase prices for aircraft in the same market as the TriFan 600 can range up to $18 million, with a high correlation between speed and cost. Historically, the higher the speed has meant lower total trip time and higher cost.

According to Business Jet Traveler magazine, the two most important reasons people fly privately are to save time, and to gain access to destinations not served by airlines. The TriFan 600 accomplishes both objectives.

Every wasted hour due to travel time has an inherent opportunity cost. In order to combat this, business jet owners often pay millions more for additional speed. But as shown in the figure above, more speed does not always equal more time saved.

Globally there are over 60,000 business airplanes and helicopters in operation. XTI predicts demand for fast runway-free transportation will result in 40-100 TriFan sales per year. It won’t replace every aircraft, but it could become the new standard for private business jets.

In addition to the crowdfunding effort, XTI intends to initiate a pre-sales program years before actual delivery. Buyers will be able to make a refundable deposit, reserve their place in line, and retain that priority position into production. With as few as 100 orders, the gross revenues of XTI would be over $1 billion (assuming the expected preliminary retail price of $10-$12 million per TriFan 600).

After generating market interest through the pre-sales program, and quantifying demand through refundable deposits and orders received, the company will leverage that data to increase its valuation for the next round of financing.

All members of XTI’s management are shareholders in the company, so they are highly motivated and incentivized to increase the company’s value and create a path to liquidity and a market for all shareholders, including those who will invest if the company moves forward under this Regulation A+ crowdfunding financing.  Therefore, over the next two or three years, the company will be analyzing and exploring various approaches to achieving liquidity for all shareholders, such as strategic relationships with publicly traded aircraft companies, and examining whether an initial public offering should be part of the company’s financing strategy within the next few years.

XTI Aircraft Company is a privately owned aviation business founded in 2012 by Chairman David Brody.  Based in Denver, Colo., the company’s mission is to develop innovative solutions to universal business aviation problems by enabling true point-to-point air travel over long distances. XTI is founded on a culture of customer-focused, innovative problem solving to meet the evolving needs of modern travelers. The TriFan 600 is the first in a family of time-saving aircraft the company intends to develop.

Together, the XTI leadership team brings decades of experience, a deep well of expertise, a shared passion for aviation, and success bringing new aircraft to market.

Dave Brody’s drive and life-long passion for aviation, science and technology put the TriFan 600 on a vertical trajectory from the beginning.  After incorporating XTI in Delaware, he developed the initial TriFan 600 configuration and performance goals in 2012, then put together a veteran aerospace engineering team, led by Dr. Dennis Olcott, to prepare a conceptual engineering report validating its configuration and core performance objectives.  Brody then filed XTI’s patents on the TriFan 600 and after establishing the strategic plan, Brody recruited the XTI board members and executive and engineering team to expand, refine, and execute the plan. In 2005, Brody founded a successful advanced technology helicopter company, AVX Aircraft Company, serving as the chairman and chief executive officer. He holds several patents in aviation and other fields, and has written several books, including a national Book-of-the-Month Club best seller on science and technology.

The former president and chief executive of Sikorsky brings broad industry experience to XTI, in strategy, sales, marketing, and guiding new, innovative aircraft from concept through design and certification.  Pino served as senior vice president at Bell Helicopter, and also as senior vice president for corporate strategy, marketing and commercial programs for Sikorsky, where he was responsible for the development of strategic plans, mergers and acquisitions, advanced programs, worldwide sales, marketing, communications, and the execution of commercial programs. He is a retired master Army aviator and served in U.S. Army active, reserve, and National Guard assignments for 26 years. He is a certified airplane and helicopter instructor pilot and accomplished aerobatic and air show performer.

The former president and chief operating officer of Cessna brings to XTI more than 35 years of experience in top-level aviation management and strategy, operations and production.   He was also Cessna’s vice president of aircraft completion and product support, senior vice president of operations, and executive vice president of operations, leading development, certifications, and product support of new airplanes. Prior to joining Cessna, Johnson served as chief of production flight test for Gates Learjet.  He also was chief pilot for Arnold Palmer. Johnson began his aviation career after completing U.S. Air Force pilot training in 1968 and accumulated over 1,000 hours of military flight time in the F-105, serving in combat in Southeast Asia. Johnson currently serves as president and chief operating officer of Aero Electric Aircraft Corporation. He holds airline transport and instructor pilot certificates with type ratings in all Cessna Citation models.

An expert on new aircraft development, structures, systems definitions, flight test and Federal Aviation Administration certification, Olcott also serves as XTI’s senior vice president of engineering. He was chief engineer at Adam Aircraft, where he led over 200 engineers and technicians covering all phases of aircraft development through certification. At Piper Aircraft he was vice president of engineering and served as chief engineer on the Piper Jet, leading over 150 engineers supporting production and new development projects.

The XTI team has put together a detailed market analysis and business plan that includes a realistic path to profitability and strong returns for investors assuming that the targets in the plan are met. Current priorities of the Board and Management Team are (1) pending financing initiatives, (2) completing diligence on the technical solution, and (3) continuing discussions with potential vendors, partners, and suppliers for the prototype and production aircraft.

Over the past two-and-a-half years, XTI has completed conceptual engineering and is now in the preliminary engineering phase of development for the TriFan 600. Each of the approximately 32 systems in the TriFan 600 (structures, electrical systems, etc.) will be evaluated on a continuous basis during the remaining design and fabrication phases, and XTI will work to reduce the level of technical risk for each system as the program moves forward.

After raising sufficient funds, XTI aims to build and fly the first prototype of the TriFan 600 (the “proof of concept”) with a targeted completion date of two and a half years. Producing and flying the proof of concept will validate the performance of the TriFan 600, which the company expects will result in a significant increase in the company’s valuation. Investors who join in this crowdfunding campaign will play a major role in accomplishing this important milestone.

Over the next year, XTI will expand its operational and marketing capabilities to continue development of the TriFan 600, take orders for the aircraft, and engage in other marketing activities which are intended to validate the global demand.

After successfully flying the proof of concept, we intend to build and test one or more prototypes used to secure certification from the Federal Aviation Administration (FAA). That certification will allow XTI to commence commercial production and sales of the aircraft. Production and initial sales will depend on meeting capital milestones as well as FAA approval.

From this time forward, the company will be analyzing and exploring various approaches to achieving liquidity for all shareholders, such as strategic relationships with publicly traded aircraft companies, and examining whether an initial public offering should be part of the company’s financing strategy within the next few years.

A big part of what distinguishes XTI is their willingness to think and act differently by approaching challenges in creative, non-traditional ways. When Title IV of the Jobs Act of 2012 became effective this June, it opened up an opportunity for an exciting and promising new fundraising vehicle called equity crowdfunding.

Before equity crowdfunding existed, securities laws made it difficult to offer investment opportunities to anyone but “accredited investors” who already have high net worth — so the public had slim to no chance of getting in early.

XTI views equity crowdfunding as a creative way to involve everyone as true stakeholders working together to pioneer this all new way to fly. It will also bring XTI one step closer towards meeting key financing milestones required to get the TriFan 600 to market. The team has considerable experience doing just that, and they are excited to have you join them.

In 1903, the Wright brothers achieved the first airplane flight at Kitty Hawk, NC. 12 seconds later at a distance of 120 feet, did they have any idea how much that single event would change the world? Not likely. In that one instant, we realized we were no longer bound to preconceived notions of what is possible. Flight was no longer beyond our reach.

 

After more than 100 years, humanity still has the same dream to push the limits and find better ways. And the unveiling of the TriFan 600 represents just that, the next step in flight evolution by providing unprecedented point to point transportation.

Now XTI Aircraft is offering everyone the chance to express interest in its first public campaign and be a part of the journey that will change personal transportation as we know it. The company will do its best to make that journey both exciting and financially rewarding for the company’s shareholders.

Now is your chance to have your own “Kitty Hawk moment,” and get in on the ground floor. Not only does the XTI team fully understand what it takes to launch a new aircraft, including roadblocks and constraints, they also know how to overcome them.

Whether you ever get a chance to purchase a TriFan 600, with this opportunity, you will be able to own a piece of XTI and benefit from each and every one of its potential multi-million dollar sales.

To express your interest in investing, please click on the green “Reserve My Shares” button in the upper right corner of the page.

What is Reg A+ Equity Crowdfunding?


In June 2015,  the final Regulation A+ rules under Title IV of the JOBS Act became effective, after approval by the Securities and Exchange Commission, paving the way for companies like XTI to raise up to $50 million from both accredited and unaccredited investors.

What is ‘Testing the Waters?’

Reg A+ allows companies to promote a potential offering in order to see how much interest they receive before they decide to submit materials to the SEC. This is called ‘Testing the Waters’ and this stage lasts until the offering has been “qualified” for fundraising by the SEC. XTI is currently ‘Testing the Waters.’

How does it work?

It only takes a minute to join the StartEngine site and by clicking on the green “Reserve My Shares” button in the top right corner of the page, you can indicate your interest in XTI’s offering  So don’t miss out on the opportunity to get in early as an equity stakeholder by taking this first step today.

Why is it important to reserve your shares today?

The share reservation process, and your reservation made today, is designed to aid XTI Aircraft in determining the dollar amount of the securities that it should offer to be sold through StartEngine in the near future once the SEC qualifies its equity crowdfund offering.

NO MONEY OR OTHER CONSIDERATION IS BEING SOLICITED AT THIS TIME, AND IF SENT IN TO XTI, WILL NOT BE ACCEPTED.  NO OFFER TO BUY SECURITIES OF XTI CAN BE ACCEPTED AND NO PART OF THE PURCHASE PRICE CAN BE RECEIVED UNTIL XTI’S OFFERING STATEMENT IS QUALIFIED.  ANY SUCH OFFER TO BUY SECURITIES MAY BE WITHDRAWN OR REVOKED, WITHOUT OBLIGATION OR COMMITMENT OF ANY KIND, AT ANY TIME BEFORE NOTICE OF ITS ACCEPTANCE IS GIVEN AFTER THE QUALIFICATION DATE.  ANY INDICATIONS OF INTEREST IN XTI’S OFFERING INVOLVES NO OBLIGATION OR COMMITMENT OF ANY KIND.

THE OFFERING MATERIALS MAY CONTAIN FORWARD-LOOKING STATEMENTS AND INFORMATION RELATING TO, AMONG OTHER THINGS, THE COMPANY, ITS BUSINESS PLAN AND STRATEGY, AND ITS INDUSTRY.  THESE FORWARD-LOOKING STATEMENTS ARE BASED ON THE BELIEFS OF, ASSUMPTIONS MADE BY, AND INFORMATION CURRENTLY AVAILABLE TO THE COMPANY’S MANAGEMENT.  WHEN USED IN THE OFFERING MATERIALS, THE WORDS “ESTIMATE,” “PROJECT,” “BELIEVE,” “ANTICIPATE,” “INTEND,” “EXPECT” AND SIMILAR EXPRESSIONS ARE INTENDED TO IDENTIFY FORWARD-LOOKING STATEMENTS, WHICH CONSTITUTE FORWARD LOOKING STATEMENTS. THESE STATEMENTS REFLECT MANAGEMENT’S CURRENT VIEWS WITH RESPECT TO FUTURE EVENTS AND ARE SUBJECT TO RISKS AND UNCERTAINTIES THAT COULD CAUSE THE COMPANY’S ACTUAL RESULTS TO DIFFER MATERIALLY FROM THOSE CONTAINED IN THE FORWARD-LOOKING STATEMENTS.  INVESTORS ARE CAUTIONED NOT TO PLACE UNDUE RELIANCE ON THESE FORWARD-LOOKING STATEMENTS, WHICH SPEAK ONLY AS OF THE DATE ON WHICH THEY ARE MADE.  THE COMPANY DOES NOT UNDERTAKE ANY OBLIGATION TO REVISE OR UPDATE THESE FORWARD-LOOKING STATEMENTS TO REFLECT EVENTS OR CIRCUMSTANCES AFTER SUCH DATE OR TO REFLECT THE OCCURRENCE OF UNANTICIPATED EVENTS.

Fonte:www.startengine.com


29 Novembre 2015

In un brevetto Airbus trapela una soluzione originale: aerei con cabina rimovibile in grado di ridurre a zero i tempi di imbarco e sbarco dei passeggeri

DI | 27/11/2015

Nelle scorse ore è apparso online un brevetto Airbus per un nuovo tipo di aereo con cabina rimovibile. Si tratta di una soluzione originale per velocizzare le procedure di imbarco e sbarco dei passeggeri con una soluzione che sembra ispirata al mondo dei camion e del trasporto su gomma.

Airbus1

Grazie alla cabina rimovibile quando l’aereo atterra l’intera sezione che ospita i passeggeri viene staccata dall’aereo e trasportata direttamente al terminal.

Airbus3 Airbus4 Airbus2

Allo stesso modo le persone che devono imbarcarsi non saranno più costrette ad aspettare l’atterraggio del volo, lo sbarco dei passeggeri e la consueta fila per prendere posto e sistemare la valigia nella cappelliera: tutti possono essere accomodati nella cabina rimovibile che poi viene prelevata e inserita nell’aereo.

Una soluzione originale che, come dicevamo, sembra ispirata ai camion e alla gestione dei container. Impossibile prevedere se e quando una soluzione di questo tipo sarà messa in pratica, se lo fosse rivoluzionerebbe tempi e modalità dell’aviazione civile.

Fonte:www.macitynet.it/


29 Novembre 2015

In un altro caso, una pensionata si è vista sottrarre duecento euro per un pagamento on line effettuato da uno sconosciuto.

Un aereo si alza in volo dopo il decollo

Un quarantenne di Caltanissetta ha denunciato in questura di essere rimasto vittima di una frode informatica. L’uomo, un impiegato, ha dichiarato alla polizia che, collegandosi su internet per una verifica di routine dell’estratto conto della carta di credito, aveva avuto modo di constatare che erano stati effettuati circa ventipagamenti di biglietti aerei  con una compagnia di volo, a sua insaputa. Tutte perazioni on line per una cifra considerevole, duemila e trecento euro. Superato un momento di comprensibile smarrimento, l’uomo si è rivolto alla polizia, nella speranza di risalire all’autore o agli autori del “colpo” telematico.

‘Sms’ prima della sgradita sorpresa

Una pensionata ha denunciato, invece, di aver ricevuto un messaggio ‘sms’ dall’istituto bancario nel quale tiene il proprio conto corrente, in cui le veniva comunicato il blocco per motivi di sicurezza. Successivamente, in banca, la donna ha appreso che qualcuno, al momento sconosciuto, aveva effettuato unacquisto con la sua carta di credito per un ammontare di duecento euro. In entrambi i casi, i titolari delle due carte hanno sottolineato di aver fatto acquisti di merce di diverso genere on line, ma di non aver mai perso di vista le rispettive carte di credito.

Indagini in corso

Alla luce degli ultimi casi sui quali sono state avviate indagini, la Questura nissena invita tutti i cittadini a visitare il sito telematico della Polizia postale e delle comunicazioni all’indirizzo www.commissariatodips.it, e seguire i profili istituzionali della Polizia di Stato “Una vita da social” e “Agente Lisa” sui social network, dove quotidianamente sono pubblicate informazioni utili per prevenire frodi e truffe su internet. Per venire incontro alle esigenze del cittadino, la Polizia ha realizzato il servizio “Denuncia via web di reati telematici”, all’indirizzo www.denunceviaweb.poliziadistato.it. Da casa, dall’ufficio e ogni altro luogo è possibile avviare l’iter per sporgere una denuncia, con notevole risparmio di tempo.

Fonte:blastingnews.com/


27 Novembre 2015

Trent’anni dopo Maverick e Iceman, finalmente, torneranno a solcare i cieli insieme. Anche Val Kilmer, come ha annunciato lo stesso attore, parteciperà al sequel di Top Gun.

Top Gun, si torna a volare“Mi hanno appena offerto di recitare in Top Gun 2. Non capita spesso di dire sì a un film senza aver letto una sceneggiatura. Lo fai quando ti dicono che ci sarà Gene Hackman o che il produttore è Francis Coppola. ‘Ci saranno Tom Cruise e Jerry Bruckheimer’, ‘Sì’. Ci mancherà Tony Scott, una delle persone più gentili che abbia mai incontrato nel mondo dello spettacolo, ma ora riaccendiamo qualche caccia!” ha scritto Val Kilmer su Facebook.

TOPGUN1

Il via alla produzione di Top Gun 2 dovrebbe esserci nel 2016. Il condizionale è d’obbligo, visto che sono anni che si parla di tale progetto e che ancora non si sa chi prenderà il posto del regista scomparso suicida nel 2012. Ma ora le parole di Kilmer danno nuova speranza ai tanti fan del film diretto nel 1986 da Tony Scott.

Top Gun è un film che ha segnato una generazione. Un film cult per i tanti appassionati di volo, con le scene di combattimento aereo, e pazienza se alcune di esse, come quella della foto che Maverick scatta in volo rovesciato al Mig russo, non sarebbero mai potute avvenire nella realtà. Un film impossibile da non vedere e rivedere per le tante adolescenti che erano divise tra il fascino dell’esuberante Maverick e quello del freddo Iceman.

TOPGUN3 TOPGUN2

Il film rappresentò anche il trampolino di lancio per i suoi protagonisti, allora semisconosciuti, che sarebbero poi state tra le maggiori star di Hollywood.

Cosa sarà questa volta di Pete ‘Maverick’ Mitchell e di Tom ‘Iceman’ Kazinsky? Come si sarà sviluppata la loro storia? Facile ipotizzare il loro ruolo da istruttori alla Top Gun. Intanto Dave Ellison, ceo di Skydance, anticipa che al centro del film ci sarà il confronto tra i piloti umani e la guerra realizzata con l’utilizzo dei droni.

TOPGUN4

Ultima curiosità riguarderà Maverick: riuscirà a volare realmente facendo così a meno della post produzione, come chiesto da Tom Cruise per dare il suo sì al progetto?

Top Gun Epic Intro

byPopo Plumsi

FONTE:www.italyjournal.it/

 


27 Novembre 2015

In arrivo una serie di iniziative natalizie di Silver Air per incentivare l’uso dell’aereo: dal “battesimo del volo” al 2×1 , alle ricongiunzioni familiari.

Il mese di dicembre per Silver Air, la compagnia che gestisce la continuità territoriale aerea fra l’Isola d’Elba e gli aeroporti di Pisa, Firenze e Milano Linate, sarà completamente dedicato alle promozioni.

La prima iniziativa riguarderà tutti coloro che non hanno ancora volato con il vettore di Silver Air, e non a caso sarà denominata “il battesimo del volo”. Si tratterà in particolare di una promozione dedicata alle famiglie: ogni settimana , a partire da martedì 1 dicembre fino alla fine dell’anno, i primi a presentarsi presso gli uffici di Silver Air presso l’aeroporto di La Pila per aderire all’iniziativa, avranno in omaggio un volo andata e ritorno gratuito su Firenze o su Pisa, a scelta.

Di questo “battesimo del volo” verrà rilasciato un attestato, e la compagnia chiederà in cambio soltanto la disponibilità a pubblicare sui social media e sulla stampa foto e dichiarazioni dei fortunati vincitori. Ogni settimana, quindi, ci saranno due posti gratuiti a disposizione, da qui alla fine dell’anno.

Contemporaneamente, ripartirà la formula “2 x 1” : per tutto il mese, chi viaggia in coppia sulle linee di Pisa, Firenze e Milano Linate (che sarà attiva da venerdì 4 dicembre) pagherà solo un biglietto intero, mentre l’altro passeggero si farà carico soltanto delle tasse aeroportuali.

Infine, una ulteriore promozione, denominata “regala un volo per Natale” sarà mirata a favorire le ricongiunzioni familiari durante il periodo natalizio: per chi deciderà di regalare a un proprio caro un volo per tornare a casa, ci sarà uno sconto del 20% sulla tariffa ordinaria  su tutte e tre le tratte di continuità territoriale.

“Due le raccomandazioni che rivolgiamo ai nostri clienti – ha sottolineato, Vincenzo Gorgoglione, responsabile marketing e rapporti con le istituzioni  di Silver Air – la prima riguarda la sicurezza: invitiamo tutti a presentarsi al check-in almeno 45’ prima dell’orario di partenza, perché in questo periodo di massima sicurezza le procedure di imbarco dell’aeroporto di La Pila sono le stesse di qualsiasi grande aeroporto internazionale.

Agli elbani poi, in particolare – ha aggiunto Gorgoglione – ricordo la necessità di imparare ad utilizzare questo mezzo di trasporto veloce e conveniente: questa per noi è l’ultima occasione a disposizione, se non ‘impariamo a volare’ rischiamo di perdere i benefici della continuità territoriale, che in un solo anno di tempo hanno dimostrato tutta la loro importanza sia per il turismo che per la vita di tutti i giorni dei cittadini residenti”.

FONTE:www.tenews.it/


27 Novembre 2015

Un problema invernale che ha a che fare con la fisica del volo.

rtxal3u_preview

Il ghiaccio sulle ali di un aereo è molto pericoloso, perché modifica la superficie delle ali stesse, diminuendo la portanza. Per volare, un aereo sfrutta la differenza di pressione tra la parte superiore e quella inferiore delle ali; secondo il cosiddetto principio di Bernoulli, infatti, modellando le ali nella forma opportuna, la forza sulla superficie inferiore (chiamata appunto portanza e diretta dal basso verso l’alto) è maggiore, e l’aereo può sostenersi in volo.

 

La presenza di ghiaccio può disturbare il flusso d’aria determinando instabilità (un fenomeno chiamato buffeting) o in casi particolarmente gravi lo stallo del velivolo, cioè un repentino calo di portanza.

ACQUA CALDA. Secondo i dati della Ntsb (National transportation safety board), tra il 1993 e il 2005 nei soli Stati Uniti sono caduti 135 aerei per cause riconducibili al ghiaccio, con 171 vittime totali (molti degli apparecchi coinvolti erano aerei ultraleggeri o da turismo).

 

Per questo, quando la temperatura scende sotto lo zero, negli aeroporti si effettuano regolarmente le operazioni di “de-icing” (rimozione del ghiaccio dalle ali tramite acqua calda cui è aggiunto un fluido viscoso) e “anti-icing” (applicazione a freddo di un fluido che impedisce la formazione di ulteriore ghiaccio nel periodo che intercorre fra il de-icing e il decollo).

FONTE:www.focus.it/


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