Advanced Tilt-Wing and VTOL Aircraft Technologies


012-Fig-1-Advanced_Tilt-Wing_and_VTOL_Aircraft_Tec

Structural and Aerodynamic Foundations

Key Concepts Details Supporting Extracts
Wing Configurations Tilt-wing, box wing, C-wing, multi-wing, hybrid designs [ 780 , 785 , 794 , 795 ]
Aerodynamic Principles Coanda effect, Bernoulli’s principle, airflow attachment, wing shape [ 778 , 779 , 786 ]
Structural Design CFRP composites, lightweight construction, damage modeling [ 791 , 794 , 795 ]
Historical Context Tilt-wing aircraft development since 1950s, CL-84 influence [ 771 , 784 , 794 ]

Transition and Flight Dynamics

Key Concepts Details Supporting Extracts
Transition Mechanisms From hover to cruise, wing-borne flight, hybrid lift [ 773 , 792 , 794 ]
Control Strategies Actuator-based thrust vectoring, aerodynamic forces, feedback control [ 793 , 794 , 796 ]
Stability & Safety Redundant systems, hybrid energy, high control authority [ 769 , 772 , 794 ]
Flight Testing Milestones Wing-borne flight demonstration, control validation [ 778 , 791 , 792 ]

Propulsion Technologies

Key Concepts Details Supporting Extracts
Electric & Hybrid Propulsion Electrically driven propellers, hybrid engines (fuel cells, combustion) [ 769 , 788 , 789 ]
Thrust Vectoring Blade pitch control, thrust vectoring via RPM variation [ 777 , 794 , 795 ]
Tilt-Prop & Tilt-Wing Tilt mechanism for lift and propulsion, hybrid energy sources [ 768 , 769 , 776 ]
Demonstration Milestones Successful wing-borne flight, engine control [ 779 , 792 , 794 ]

Applications & Operational Contexts

Key Concepts Details Supporting Extracts
Cargo & Medical Delivery Critical cargo transport, medical supplies, emergency response [ 766 , 767 , 770 , 778 ]
Urban Air Mobility Electric VTOLs, eVTOL demonstrators, city transport [ 775 , 794 ~ 796 ]
Military & Strategic Use Strategic airlifters, multi-national peacekeeping [ 778 , 797 ]
Disaster Relief & Peacekeeping Multi-national operations, strategic airlifts [ 797 ]
Scientific & Demonstration Missions Flight testing, prototypes, control validation [ 779 , 791 , 792 ]

Key Entities and Future Outlook

Entities Roles & Contributions Supporting Extracts
Dufour Aerospace Pioneering tilt-wing eVTOLs, prototypes Aero2/Aero3 [ 768 , 770 , 772 , 795 ]
Swiss Helicopter Strategic customer, operator of Dufour Aero aircraft [ 766 , 781 ]
Blueberry Aviation Distribution & operational support [ 770 ]
Aerolite AG Structural components, composite manufacturing [ 772 ]
NASA & Defense Agencies Research, prototype validation, flight demonstrations [ 791 , 792 ]

Statistics & Milestones

Metric Value Extracts
Flight Demonstrations [ 4 ] [ 792 ]
Prototype Development Aero2, Aero3, Aero1 [ 766 , 768 , 770 ]
Funding & Investment Multiple funding rounds, strategic partnerships [ 775 , 794 ]
Production & Orders Swiss Helicopter orders Aero2 & Aero3 [ 781 ]

Summary

Tilt-wing and tilt-rotor aircraft embody a confluence of aerodynamic innovation, advanced materials, and hybrid propulsion, enabling versatile VTOL capabilities for civil, military, and scientific applications. The integration of aerodynamics such as Coanda effect, combined with sophisticated control and structural designs, underpins the safety, efficiency, and adaptability of these aircraft. Ongoing development, demonstrated via flight milestones and strategic collaborations, points to a transformative future in urban mobility, cargo logistics, and strategic air mobility.

Summary Visualizations of Tilt Wing Integration

This collection of extracts focuses on tilt-wing aircraft development, control systems, and strategic implications within aerospace engineering, particularly in the context of VTOL and eVTOL innovations. The charts will elucidate technological evolution, operational principles, and strategic relationships, emphasizing the sequence of flight demonstration milestones, design principles, and aerospace industry collaborations.


Preface

The diagrams below synthesize the complex relationships, development timelines, and design concepts underpinning tilt-wing aircraft integration, with a focus on technical progression, control methodologies, and strategic positioning in modern aerospace.


Timeline of Key Tilt-Wing Aircraft Development Milestones


012-Fig-2-Timeline_of_Key_Tilt-Wing_Aircraft_Devel

Insight: The development trajectory from early electric prototypes through to recent successful flight demonstrations underscores rapid technological maturation and industry validation of tilt-wing VTOL concepts.


Sequence of Tilt-Wing Aircraft Flight Demonstration


012-Fig-3-Sequence_of_Tilt-Wing_Aircraft_Flight_De

Main insight: The process underscores iterative testing leading to market-ready tilt-wing eVTOL aircraft, emphasizing the significance of controlled transition flights.


Design Principles of Tilt-Wing Aircraft


012-Fig-4-Design_Principles_of_Tilt-Wing_Aircraft

Insight: Tilt-wing aircraft utilize a seamless transition from vertical lift to high-speed cruise, combining helicopter agility with airplane efficiency.


Control System Integration for Tilt-Wing Aircraft


012-Fig-5-Control_System_Integration_for_Tilt-Wing

Insight: Advanced control algorithms, sensor redundancy, and actuator management are vital for ensuring stability and safety during transition phases.


Relationships between Technological Components and Industry Collaborations


012-Fig-6-Relationships_between_Technological_Comp

Insight: Strategic partnerships and component collaborations underpin the accelerated development and market introduction of tilt-wing eVTOL aircraft.


Significance of Tilt-Wing Technology in Modern Aerospace


012-Fig-7-Significance_of_Tilt-Wing_Technology_in_

Insight: Tilt-wing aircraft are pivotal for urban mobility, emergency logistics, and military applications, reflecting their versatile operational profile.


Cause & Effect: Development of Tilt-Wing Aircraft


012-Fig-8

Insight: Data-driven research fuels iterative design, leading to successful flight demonstrations, industry acceptance, and increased funding.


Strategic Industry Pathways for Tilt-Wing Aircraft


012-Fig-9-Strategic_Industry_Pathways_for_Tilt-Win

Insight: A strategic pathway from R&D through commercialization ensures sustained growth and technological leadership in tilt-wing aircraft.


Final Remarks

The visualizations underscore a vibrant ecosystem of technological innovation, strategic collaboration, and operational mastery in tilt-wing aircraft development, with recent milestones validating their potential to revolutionize urban mobility, logistics, and military operations.


End of Analysis


Citation Links

         
4 https://www.airbus.com/en/innovation/disruptive-concepts/biomimicry      airbus.com   2022-08-10T23:44:08.000Z
       This demonstrator project focused on accelerating and validating technologies that will improve and optimise wing aerodynamics and performance for any future aircraft. Its applications would be compatible with any propulsion solution and aircraft configuration and would reduce CO₂ emissions, contributing greatly to Airbus' decarbonisation roadmap. Wake-energy retrieval to boost environmental performance This demonstrator project aims to prove the viability of "wake-energy retrieval" - a "V-shaped" flight technique used by migrating geese when flying across long distances - for commercial aircraft. This collaborative activity could produce fuel savings of between 5-10% per fello'fly trip. This theoretical design is a hybrid-electric, turbo-propeller aircraft for regional air transportation. It mimics the eagle's wing and tail structure, and features individually controlled feathers that provide active flight control. These vertical wing-tip extensions that resemble a shark's dorsal fin significantly reduce the size of the wingtip vortex, thus reducing induced drag. Today, all members of the A320neo Family are fitted with sharklets as a standard. Airbus has performed the first long-haul demonstration of formation flight in general air traffic (GAT) regulated transatlantic airspace with two A350 aircraft flying at three kilometers apart from Toulouse, France to Montreal, Canada. The aircraft were greeted at Montreal-Trudeau International Airport. Over 6 tons of CO2 emissions were saved on the trip, confirming the potential for more than a 5% fuel saving on long-haul flights. How a fello'fly flight will actually work The Airbus fello'fly demonstrator project is putting the principles of wake-energy retrieval to the test as a way to reduce CO2 emissions - by between 3 and 4 million tons per year - on widebody operations.

     
766 https://www.suasnews.com/2023/10/european-medical-drone-signs-purchase-agreement-with-dufour-aerospace/      suasnews.com   2023-09-30T23:59:58.000Z
       Dufour Aerospace's designs currently under development rely on the tilt-wing principle. They take-off and land vertically in the smallest space like a helicopter but fly as fast and economically as an airplane. While the propellers are electric-driven, hybrid elements (conventional combustion engines or fuel cells) ensure a sufficiently long range. The first product Dufour Aerospace will launch is the Aero2, an uncrewed aerial vehicle specifically designed for the transportation of critical cargo such as medical supplies of up to 40 kilograms/88 pounds in medium to long range distances. The manned Aero3, featuring a spacious cabin with eight seats and large doors, is the next aircraft in development by Dufour Aerospace. www.dufour.aero ‍About Savback Helicopters ‍Savback Helicopters AB is a trusted, international, and independent vendor of new and pre-owned aircraft. These core offerings are underpinned by expert aircraft buying & selling services and consultancy. Over the last two decades, Savback has successfully garnered a wide international customer base supplying aircraft to a discerning client base all over the world. Since 1990, the company has sold over 900 helicopters, providing many satisfied private, public and commercial clients. With customer care as their guiding principle, they are now working on a number of exciting new initiatives that they believe will revolutionise the aviation market.

     
767 https://www.suasnews.com/2023/09/armasuisse-st-engages-dufour-aerospace-for-design-study/      suasnews.com   2023-08-31T23:59:58.000Z
       Dufour Aerospace's designs currently under development rely on the tilt-wing principle. They take-off and land vertically in the smallest space like a helicopter, but fly as fast and economically as an airplane. While the propellers are electrically-driven, hybrid elements (conventional combustion engines or fuel cells) ensure a sufficiently long range. The first product Dufour Aerospace will launch is the Aero2, an uncrewed aerial vehicle specifically designed for the transportation of critical cargo such as medical supplies of up to 40 kilograms/88 pounds in medium to long range distances. Dufour Aerospace is based in Switzerland (Zurich and Visp) and has 40 employees, the vast majority of whom work in aircraft engineering. dufour.aero

     
768 https://www.suasnews.com/2023/06/dufour-aerospace-releases-final-aero2-design-andspecifications-for-innovative-tilt-wing-drone/      suasnews.com   2023-05-31T23:59:58.000Z
       Dufour Aerospace's designs currently under development rely on the tilt-wing principle. They take-off and land vertically in the smallest space like a helicopter, but fly as fast and economically as an airplane. While the propellers are electrically-driven, hybrid elements (conventional combustion engines or fuel cells) ensure a sufficiently long range. The first product Dufour Aerospace will launch is the Aero2, an uncrewed aerial vehicle specifically designed for the transportation of critical cargo such as medical supplies of up to 40 kilograms/88 pounds in medium to long range distances. The manned Aero3, featuring a spacious cabin with eight seats and large doors, is the next aircraft in development by Dufour Aerospace. dufour.aero

     
769 https://www.suasnews.com/2023/09/dufour-aerospace-announces-the-selection-of-plettenberg-as-a-partner-for-the-tail-thruster-propulsion-unit-of-aero2/      suasnews.com   2023-09-30T10:20:17.000Z
       All Plettenberg products are developed and manufactured in Germany under a strict quality system which is ISO 9001 certified. ‍plettenbergmotors.com ‍About Dufour Aerospace Dufour Aerospace develops efficient and ecological aircraft for patient and passenger transport, logistics and public safety. Dufour Aerospace's designs currently under development rely on the tilt-wing principle. They take off and land vertically in the smallest space like a helicopter but fly as fast and economically as an airplane. While the propellers are electric-driven, hybrid elements (conventional combustion engines or fuel cells) ensure a sufficiently long range.

     
770 http://www.noticias-aero.info/2022/      noticias-aero.info   2023-02-07T12:00:14.000Z
       AAC to develop a unique free-swinging tilt-wing UAV for NASA NASA has contracted Virginia's Advanced Air Company to design and build a prototype of a new type of transition-capable eVTOL drone - a tilt-wing concept that uses aerodynamic forces instead of actuators to tilt the wings and propulsion systems. https://newatlas.com/aircraft/aac-aerodynamic-tilt-wing/ Este contrato, valorado en unos 8.000 millones de euros, tendra por objeto preparar y realizar las demostraciones de los distintos sistemas del NGWS. Uno de los principales hitos de estas demostraciones sera el primer vuelo del demostrador del New Generation Fighter (avion de combate de nueva generacion). https://www.defensa.gob.es/gabinete/notasPrensa/2022/12/DGC-221215-FCAS.html Publicado por Frikinautico en 12:06 , 0 comentarios https://www.etsiae.upm.es/index.php?id=141&tx_news_pi1%5Bnews%5D=545&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&cHash=2a3443700efe364fbc088703d31e65fd Publicado por Frikinautico en 12:02 , 0 comentarios

     
771 https://www.theglobeandmail.com/business/article-swiss-manufacturer-dufour-eyes-canadian-manufacturing-facility-for-new/      theglobeandmail.com   2021-10-11T15:22:41.000Z
       "The principle has become useful again," said Erin Gregory, the curator at Canada Aviation and Space Museum in Ottawa, where one of the two remaining CL-84 sits on display. "It stands out because it is an odd-looking airplane, for sure," Ms. Gregory said. The Aero 3 will cost between US$2.5-million and US$5.4-million, and operate at a cost of about US$1,500 an hour. A typical helicopter can cost several millions of dollars, and cost US$20,000 an hour to operate. Every hour in the air requires four hours of maintenance on the ground. Dufour in 2015 became one of the first to build an all-electric stunt plane, the Aero 1, and is making a pilotless version of the Aero 3. To design the four-engine Aero 3, Dufour engineers studied flight data, NASA research papers and other publicly available information on the Canadair CL-84, which died in 1974 after the U.S. military decided not to place orders. "It is a known aerodynamic concept proven by pilots, many dozens of them, who flew that aircraft in the sixties," Mr. Pfammatter said by phone. " Aviation is so difficult and you have so many unknowns that you want to limit your risks. There is so much material out on the tilting aircraft data, how they fly and how they behave in which conditions." The CL-84 was among several tilt-wing aircraft developed in the 1950s and 60s. (2021)

     
772 https://dronesnewshubb.com/2023/07/13/dufour-aerospace-announces-the-selection-of-aerolite-as-a-partner-for-composite-structural-parts-suas-news-the-business-of-drones/      dronesnewshubb.com   2023-07-12T23:59:58.000Z
       Aerolite AG Composite - designs and produces innovative main structures for Drones, UAVs, eVTOLs as well as interior equipment for Advanced Air Mobility, Rescue Helicopters, Air Ambulances and Business Aircraft. Not only by consistently applying our unique lightweight construction principles, but also by following our strong sense of innovative functionality to design and deliver OEM and Customer-specific solutions. This vast level of Aerospace experience and capabilities have translated into valuable expertise going forward, which have become outstanding abilities in all phases of the Composite process - which is constantly developing and evolving. We are proud to be a strategic supplier to Dufour to develop, collaborate and produce main eVTOL structural components and subsequently for Emergency Medical Interiors. www.aerolite.ch ‍About Dufour Aerospace‍ Dufour Aerospace develops efficient and ecological aircraft for patient and passenger transport, logistics and public safety. Dufour Aerospace's designs currently under development rely on the tilt-wing principle. They take-off and land vertically in the smallest space like a helicopter but fly as fast and economically as an airplane. While the propellers are electric-driven, hybrid elements (conventional combustion engines or fuel cells) ensure a sufficiently long range.

     
773 https://vdocument.in/scout-badges.html      vdocument.in   2023-03-28T12:33:06.000Z
       Principles of flight1. Explain the meaning of trim and the importance of weight and balance. Explain the purpose and operation of flaps, slots and slats. Explain how basic aerobatic manoeuvres are carried out. Demonstrate knowledge of the principles of take-off and landing with special reference to light aircraft. Explain the methods by which short or vertical take-off can be achieved. Describe the airflow around a modern square parachute, explaining how it de- velops lift and how it is controlled. Attain a reasonable standard on a home computer flight simulator programmeand understand why the aircraft behaves as it does. The suitability of the pro-gramme is to be agreed by the Section Leadership Team. Show knowledge of the methods for operating specialised passenger aircraftinto city centres such as helicopters, STOL, tilt wing etc and the main draw-backs. Explain how and where to shop for food and how to transport it. Demonstrate proper storage and cooking under camp conditions. include knowledge of hygiene in the camp kitchen and how to prevent food poi-soning.

     
775 https://www.avbuyer.com/articles/business-aircraft-development-and-certification/evtol-the-future-of-business-flying-part-three-113308      avbuyer.com   2023-03-20T19:54:31.000Z
       Dufour Aerospace received additional funding in April 2021 and is now preparing to launch the build of its hybrid-electric, tilt-wing aEro 3 prototype.

     
776 https://uasweekly.com/2022/04/14/dufour-and-blueberry-aviation-enter-strategic-partnership/      uasweekly.com   2022-04-13T23:59:58.000Z
       Through this collaboration Dufour Aerospace aims to further develop its customer base, as well as secure transactions with launch customers for Dufour Aero 2 and Aero3 products, using Blueberry Aviation's industry expertise and worldwide network of operators. Blueberry Aviation boasts 20 years of experience in the commercial aircraft and helicopter markets and is ideally suited to support Dufour Aerospace in launching its aircraft and achieving its commercial goals. Dufour Aerospace's unique technology that combines tilted wing with hybrid energy gives the company an indisputable competitive edge to current helicopter technology and VTOL competitors. The tilt-wing design of Dufour Aerospace's aircraft family combines the ability to take off and land vertically like a helicopter with the efficiency and speed of a conventional aircraft, without the constraints and limitations of other eVTOL designs.

     
777 https://ppubs.uspto.gov/pubwebapp/external.html?q=(20230322377).pn      Urbineer Inc   2023-10-11T23:59:58.000Z
       The relevant art may be an eVTOL, tiltrotor or tilt-wing vehicle that uses a mechanism that allows for the pitch of each blade to be controlled independently, rather than collectively. Bell Helicopter/Textron, Inc, also have several patents in related areas. The relevant art may describe an APT vehicle which may implement thrust vectoring by varying RPM. Elroy Air may have an unmanned cargo delivery aircraft that implements the redundant vertical/horizontal distributed electric propulsion systems described above. Joby Aero, Inc. is another primary contender in the eVTOL space, and their rotor blade pitch is adjusted in response to cone angle of the blades to allow the blades to fold backward against the nacelle for minimum drag when the propulsor is not in use.

     
778 https://www.eskimo.com/~billb/wing/airfoil.html      eskimo.com   2023-06-04T08:14:02.000Z
       The upper surface deflects air downwards because the airflow "sticks" to the wing surface and follows the tilted wing (this phenomena is called "Coanda effect" or "Flow Attachment.") Air's inertia is critical: after the wing has passed by, air must remain flowing downwards ... and the lifting force does not arise in extremely viscous fluids. Airplanes fly because of Newton's 3rd law (action/reaction forces,) the law of Conservation of Momentum, and the Coanda effect. The popular explanation, PATH-LENGTH or AIRFOIL-SHAPE: wings do not deflect air: the air far behind the wing is flowing the same as the air far ahead. Instead, wings are essentially "sucked upwards" because the airfoil shape has a longer surface on top. Airfoils are curved on top and flat below, and therefore the air follows a longer path above than below. Hunks of air which get divided at the leading edge of a wing must join each other again at the trailing edge. Since the upper surface of the wing is longer, it causes the upper air to flow faster than the lower, which (by Bernoulli's principle) creates lower pressure above.

     
779 http://www.noticias-aero.info/2020/07/      noticias-aero.info   2020-06-30T23:59:58.000Z
       Building on our experience in manned electric flight with our aerobatic plane aEro 1, we are proud to announce that we have completed the first phase of flight testing of our VTOL technology demonstrator aircraft. Over the course of 550 test flights, expanding the flight envelope incrementally, we have demonstrated a high degree of stability and control in all conditions, including transitions from hover to cruise and back again. Inspired by Canadair's pioneering work fifty years ago with the CL-84, our research has shown that tilt-wing convertible aircraft offer a high degree of safety and efficiency. (2020)

     
780 https://worldwide.espacenet.com/patent/search?q=EP3837164B1      Andras Hernadi   2025-03-25T23:59:58.000Z
       But the most relevant aspect (relevant for the present Description) is the correct aero terminology (from Airbus!) explaining the terms "C-wing", "C-wing configuration", "C-wing like winglet", "top wing", "side wing", "wing assembly", as well as providing guidance about what a wing "section" is vs. wing portion. The ISA cited also EP 2 896 563 A1, a morphing wing with mobile upper surface, relevant because morphing wing technology is mentioned in the present invention. Most modern box wing aircraft designs with ambition for good aerodynamic performance have long and narrow wings such as WO 2004/074093 A1 or BG 65998 B1. Some designers reinforce the root of the thin and narrow front wing by using less sweep angle of the trailing edge at the root, for example BG 65998 B1. Other designers employ such an extra triangular wing area along half of the inboard trailing edge of the front wing, for easy installation of the flaps, such as DE 201 11 224 U1. The claims of WO 2004/074093 A1 focus on the aerodynamic channel between the tail fins and the rear wings. There is a box wing design where the inboard portion of the rear wing is anhedral and the outboard portion is dihedral, namely WO 88/06551 A1. Another design, WO 03/059736 A2, has three pairs of wings with the ambition of using the Coanda effect. A "joined-wing tilt-wing aircraft" was introduced in US D724001, but it is a standard box wing configuration with an additional, shorter middle wing, without physical contact with the two boxed wings.

     
781 https://www.helis.com/database/news/swiss-dufour-aero2-aero3/      helis.com   2023-06-01T15:59:27.000Z
       Swiss Helicopter Orders Dufour Aero eVTOLs Dufour Aerospace Aero3 in Swiss Helicopter AG Swiss Helicopter ordered Dufour Aerospace Aero2 and Aero3 tilt-wing electric vertical take-off and landing (eVTOL) aircraft Dufour Aerospace, March 24, 2023 - Visp/Chur - Dufour Aerospace, the innovative Swiss eVTOL company, and Swiss Helicopter AG, Switzerland's leading helicopter company, announced that they have signed a Letter of Intent for the purchase of two Aero2 and one Aero3 tilt-wing aircraft.

     
784 https://www.legislation.gov.au/Details/F2010L01084      legislation.gov.au   2023-12-05T21:03:24.000Z
       "Aircraft" (1 7 9 ML8 ML9 ML10) means a fixed wing, swivel wing, rotary wing (helicopter), tilt rotor or tilt - wing airborne vehicle.

     
785 https://www.legislation.gov.au/Details/F2018C00287      legislation.gov.au   2023-12-11T18:38:51.000Z
       "Aircraft" (1 6 7 9 ML8 ML10 ML14) means a fixed wing, swivel wing, rotary wing (helicopter), tilt rotor or tilt - wing airborne vehicle.

     
786 https://www.sec.gov/Archives/edgar/data/0001104659/0001104659-25-005662-index.htm      Vertical Aerospace Ltd   2025-01-23T16:53:37.000Z
       The Tranche A Warrants will be immediately exercisable and will expire at 5:00 p.m. New York City time on the earliest to occur of: (i) the satisfaction of both of the following conditions: (a) we successfully demonstrate a wing-borne flight of our VX4 prototype aircraft, which involves the aircraft (x) taking off as a CTOL aircraft, (y) flying to high speed with lift generated by the wing and the tilt propellers facing forward, and (z) landing safely as a CTOL aircraft from such flight (the Performance Condition) and (b) the 10-day volume weighted average price of the ordinary shares as reported by Bloomberg commencing on the trading day immediately following the initial public disclosure by means of a press release or Form 6-K or equivalent form furnished to the SEC of the satisfaction of the Performance Condition (the Initial Public Disclosure) is equal to, or greater than, one hundred and three percent (103%) of the Tranche A Warrant Price (the VWAP Condition), the 30th calendar day following the date of the Initial Public Disclosure, and (ii) the five-year anniversary of the initial date of issuance.

     
788 https://www.international.gc.ca/controls-controles/about-a_propos/expor/guide-2010.aspx?lang=eng      international.gc.ca   2023-09-24T09:44:16.000Z
       Technology" for the "development" or "production" of hydraulic stretch-forming machines and dies therefor, for the manufacture of airframe structures; "Technology" for the "development" of generators of machine tool instructions (e.g., part programmes) from design data residing inside "numerical control" units; "Technology" for the "development" of integration "software" for incorporation of expert systems for advanced decision support of shop floor operations into "numerical control" units; "Technology" for the application of inorganic overlay coatings or inorganic surface modification coatings (specified in column 3 of the following table) to non-electronic substrates (specified in column 2 of the following table), by processes specified in column 1 of the following table and defined in the Technical Note.

     
789 https://www.international.gc.ca/controls-controles/about-a_propos/expor/guide-2011.aspx?lang=eng      international.gc.ca   2023-11-28T09:46:13.000Z
       A computer controlled rate monitor operating on the principle of photo-luminescence of the ionised atoms in the evaporant stream to control the deposition rate of a coating containing two or more elements;

     
791 https://www.cranfield.ac.uk/courses/taught/avd-option-aircraft-design      cranfield.ac.uk   2023-09-28T17:03:03.000Z
       An ultra-light tilt-wing-rotor aircraft for short take-off and landing capability; Scale factor for the structure design of a BWB Aircraft; Design of a human powered helicopter (HPH); Conceptual fesign of a two-seat training/touring 'Autogyro'. Examples in aircraft structural design and analysis topics: Investigation in the numerical representation of damage on CFRP stiffened panels and behaviour under combined loading; Delamination growth of carbon fibre composites under fatigue loads; Experimental testing and numerical analysis of aircraft bolt jointed sandwich composites; Strength prediction via testing and/or numerical simulation of bolted joints on fibre reinforced laminates; Composite design considerations for trailing arm landing gears; Fatigue behaviour of bolted joints on CFRP laminates following pull through failure; Simulation of thermal residual stresses of CFRP wing; Fatigue of buckled composite stiffened panel; Dynamic Indentation of composite laminates; Numerical modelling of through-thickness reinforced composite laminates; Direct measurement of traction-separation law in fatigue damage of adhesive bonding; Composite joints reinforced by composite fasteners. Example aircraft systems design and analysis topics: Systems/structure design modifications to increase manufacture and assembly rates; The development of a hypersonic air-breathing propulsion model and the sizing and integration of a propulsion concept;

     
792 https://www.sec.gov/Archives/edgar/data/0001104659/0001104659-25-066411-index.htm      Vertical Aerospace Ltd   2025-07-08T16:07:33.000Z
       On May 27, 2025, we announced the successful demonstration of a wingborne flight of the VX4 prototype aircraft, which involves the aircraft (1) taking off as a Conventional Take-Off and Landing aircraft ("CTOL"), (2) flying to high speed with lift generated by the wing and the tilt propellers facing forward, and (3) landing safely as a CTOL aircraft from such flight. Changes to Board Composition On April 30, 2025, the Board appointed Kris Haber to serve as a director of the Company, effective immediately.

     
793 https://worldwide.espacenet.com/patent/search?q=EP4166309A1      David Michael Bain   2023-04-18T23:59:58.000Z
       Preferably, the method is one wherein the composite ply is processed to form the composite part for a platform selected from a group comprising a mobile platform, a stationary platform, a land-based structure, an aquatic-based structure, a space-based structure, an aircraft, a commercial aircraft, a rotorcraft, a tilt-rotor aircraft, a tilt wing aircraft, a vertical takeoff and landing aircraft, an electrical vertical takeoff and landing vehicle, a personal air vehicle, a surface ship, a tank, a personnel carrier, a train, a spacecraft, a space station, a satellite, a submarine, an automobile, a power plant, a bridge, a dam, a house, a manufacturing facility, and a building.

     
794 http://all-aero.com/index.php/component/content/article/53-planes-l-m-n-o/6106-ling-temco-vought-xc-142a      all-aero.com   2023-03-26T12:59:56.000Z
       Yaw control was provided by ailerons powered by propeller slipstream deflection, actually a second VTOL concept being employed in the XC-142. The craft main lift system in the wing was capable of rotating through 98 degrees instead of the expected straight-vertical position. The wing tilt mechanism consisted of two screw-jack actuators driven by a centrally-located hydraulic motor. The tilt was controlled by a variable rate switch on each collective lever, or by a constant rate switch. This allowed the plane to hover in a stationary mode in a tailwind condition.

     
795 https://www.mdpi.com/2226-4310/5/1      mdpi.com   2023-03-21T01:13:30.000Z
       The methodology is illustrated on a realistic aircraft benchmark proposed by the authors, which is fully described in this paper and freely available from the SMAC (Systems Modeling Analysis & Control) toolbox website (http://w3.onera.fr/smac). (This article belongs to the Special Issue Aircraft Dynamics & Control) Robust Control Design for Quad Tilt-Wing UAV Kai Masuda Kenji Uchiyama Aerospace 2018, 5(1), 17; https://doi.org/10.3390/aerospace5010017 - Viewed by 8319 A QTW-UAV is necessary to design a controller considering its nonlinear dynamics because of the appearance of the nonlinearity during transition flight between

     
796 https://australianaviation.com.au/2018/03/disruptive-power/      australianaviation.com.au   2018-02-28T23:59:58.000Z
       Urban air mobility "is an adventure which has already started for us," Llewellyn says. " We plan to fly our first urban air mobility vehicle called Vahana this year - it's a one-seat demonstrator. It's got eight electric motors, eight propellers, it's got a tilt-wing, and it is being built in our A3 Silicon Valley facility in the US." A concept drawing of Airbus's battery-powered Vahana 'urban air mobility vehicle'. (Airbus) "Next year we will have the first flight of a four-seat demonstrator, the City Airbus, with a different type of architecture at the vehicle level. (2018)

     
797 https://www.thefreelibrary.com/Always+faster%2C+sometimes+safer%3A+multi-national+operations%2C+whether+of...-a0188276268      thefreelibrary.com   2022-05-25T11:08:55.000Z
       Always faster, sometimes safer: multi-national operations, whether of disaster relief or peacekeeping nature, in distant underdeveloped regions are driving demands for strategic airlifters and tankers, and for fixed-, rotary- and tilt-wing intra-theatre transports.