Aviation
Top 5 Airlines With the Best Wine Lists by One world Alliance
This latest accolade consolidates oneworld’s position as the world most highly prized airline alliance, as the current holder also of six of the leading overall “best airline alliance” awards presented internationally, along with the only other alliance award presented for the quality of wines offered by airlines, Global Traveler’s Wines on the Wing.
oneworld’s member airlines also flew high in the Cellars in the Sky 2017 awards.
Qantas received three Gold medals – for Best First Class White, Best First Class Cellar and Best Business Class Fortified/Dessert Wine.
Cathay Pacific and Malaysia Airlines jointly shared the Gold Medal for Best First Class Sparkling.
American Airlines, British Airways, Finnair, Japan Airlines, Qatar Airways and SriLankan Airlines were also honoured with Silver and Bronze Medals.
The judges included luminaries from the world of wine, led by co-chairman of the International Wine Challenge Charles Metcalfe.
Last year, oneworld member airlines served some 30 million bottles of wine, including around 2.5 million bottles of Champagne.
Among wine and beverage fun facts from across the alliance:
- Qantas is the third biggest buyer of wine in Australia, selecting from 150 plus Australian wine makers.
- British Airways offers a choice of three Champagnes and seven different wines to First Class passengers – and five wines in Club World (longhaul Business Class).
- Many oneworld member airlines offer their own alcoholic and non-alcoholic signature cocktails.
- Cathay Pacific has brewed its own signature beer – Betsy – specially crafted to be ideal at 36,000 ft.
- British Airways commissioned its own signature gin.
- oneworld member airlines focus also on non-alcoholic beverages. Among them, Finnair served a million litres of blueberry juice, Finland’s signature drink, while Qantas serves barista coffee in most of its lounges.
Other “best airline alliance” awards currently held by oneworld include:
- FlightStats’ Airline Alliance On-Time Performance Service Award for 2017, for the fifth year running.
- Global Traveler magazine’s 2017 GT Tested Reader Survey – for the eighth year in a row.
- Business Traveller’s 2017 Best Airline Alliance for the fifth consecutive year.
- Business Traveler North America’s 2017 Best in Business Travel Awards, for the third year running.
- World Travel Awards’ World’s Leading Airline Alliance 2017 for the 15th year running.
- Trazees’ Favorite Airline Alliance, for the second time.
Press : One world Alliance
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Aviation
Exploring the Different Types of Helicopter Rotor Systems and the Science Behind Them
Helicopters are unique aircraft that use rotating blades, called rotors, to generate lift and enable flight. The design of these rotor systems is crucial because it affects how helicopters perform, maneuver, and respond to different flying conditions.
There are several types of helicopter rotor systems, each with its own advantages and specific uses. Understanding these systems helps us appreciate the engineering behind helicopters and their diverse capabilities, from search and rescue missions to military operations and aerial photography.
In this Video, we will explore the main types of helicopter rotor systems and how they contribute to the helicopter’s functionality and performance.
1. Single Rotor System
The single rotor system is characterized by a single main rotor blade that is responsible for generating lift. To counteract the torque produced by this rotor, a tail rotor is used. This setup is essential for maintaining directional control and stability during flight.
Uses: This design is prevalent in most conventional helicopters, including iconic models such as the Bell 206 and the Robinson R22. The simplicity of the single rotor system not only reduces mechanical complexity but also enhances efficiency. As a result, it is favored for a variety of applications, including aerial tours, law enforcement, and emergency medical services, where reliability and straightforward operation are paramount.
2. Tandem Rotor System
The tandem rotor system features two parallel rotors of equal size that rotate in opposite directions. This counter-rotation helps to cancel out the torque that each rotor would otherwise produce, resulting in a balanced and stable flight profile.
Uses: This configuration is typically employed in heavy-lift helicopters, such as the CH-47 Chinook. The tandem design allows for an increased payload capacity and enhanced stability, making it particularly effective for transporting troops, equipment, and supplies in military operations, as well as for civilian applications like logging and construction, where heavy lifting is required.
3. Coaxial Rotor System
The coaxial rotor system consists of two rotors mounted one above the other on the same mast, rotating in opposite directions. This innovative design minimizes the need for a tail rotor, allowing for a more compact helicopter structure.
Uses: Coaxial rotor systems can be found in helicopters such as the Kamov Ka-50. This design offers several advantages, including enhanced lift capabilities, improved maneuverability, and better control in various flight conditions. These features make it particularly suitable for military applications, where agility and quick response times are crucial, as well as for specific civilian operations that require high performance in tight spaces.
4. Intermeshing Rotor System
The intermeshing rotor system consists of two rotors that rotate in opposite directions while intersecting each other, but without colliding. This unique configuration creates a highly efficient aerodynamic profile.
Uses: This system is utilized in helicopters like the Kaman K-MAX, designed specifically for heavy lifting and aerial work. The intermeshing rotors provide remarkable stability and lift capabilities, making it particularly effective for operations in confined spaces, such as urban environments or dense forests. It is ideal for missions that involve heavy external loads, including construction, firefighting, and disaster relief efforts.
5. Transverse rotor system
The transverse rotor system has two parallel rotors that spin in opposite directions, improving lift and stability. This design enhances the aircraft’s aerodynamic efficiency and maneuverability.
A notable example of this system is the V-22 Osprey, a tiltrotor aircraft that merges helicopter vertical lift with the speed of a fixed-wing plane. allowing the Osprey to operate in tough environments like urban areas and remote locations. It can carry heavy loads and personnel, making it suitable for troop transport, search and rescue, medical evacuation, and logistical support in military operations. Overall, the transverse rotor system enhances the V-22 Osprey’s effectiveness and operational flexibility.
6. Compound Rotor System
The compound rotor system combines traditional rotor systems with fixed wings and other aerodynamic features to enhance efficiency and speed. This hybrid approach allows for greater aerodynamic performance than standard rotorcraft.
Uses: Advanced helicopters like the Sikorsky X2 and Boeing’s DBF (Defiant) utilize the compound rotor system. These helicopters are designed for higher speeds and longer ranges, making them suitable for military operations, search-and-rescue missions, and law enforcement tasks where rapid response and extended operational capabilities are essential.
7. NOTAR system
NOTAR system replaces the traditional tail rotor with a ducted fan and directional airflow to counter the torque from the main rotor. It works by pushing air through the tail boom and out through side vents, creating thrust that stabilizes the helicopter. This design reduces noise, boosts safety, and cuts down on maintenance.
Uses: The NOTAR system is found in helicopters like the MD 520N and MD 902 Explorer. Without an exposed tail rotor, it lowers the risk of rotor strikes, making it safer for operations in tight spaces. Its quieter performance is ideal for missions where low noise is needed, such as urban air operations, police work, and medical evacuations.
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