Connect with us

Aviation

Top 10 Longest Flights in the World 2018

Top 10 Longest Flights in the World 2018

The following table lists the world’s longest non-stop scheduled passenger routes by “great circle” distance. The actual distance flown, however, can be longer than the great circle distance for a variety of reasons, such as avoiding severe weather, taking advantage of favorable winds aloft, detouring around closed airspace, and diverting around war zones.

 

FILE PHOTO A Qatar Airways aircraft is seen at a runway of the Eleftherios Venizelos International Airport in Athens, Greece, May 16, 2016. REUTERS/Alkis Konstantinidis/File Photo – RTX2LRCE

  1. QATAR Airways (QR 921)

Destination: Auckland to Doha

Distance: 14,535 km (9,032 mi; 7,848 nmi)

Duration: 17:40 to 18:20 Hour

Aircraft: Boeing 777-200LR

Advertisement

First Flight 5 Feb 2017

Qantas starts History-making flight Direct to London by its B787-9

  1. Qantas Airways (QF9)

Destination: Perth to London

Distance: 14,500 km (9,010 mi; 7,829 nmi)

Duration:  17:20 Hours

Aircraft: Boeing 787-9

First Flight: 24 Mar 2018

  1. Emirates (EK 449)

Destination: Auckland to Dubai

Distance: 14,201 km (8,824 mi; 7,668 nmi)

Advertisement

Duration:  17:05 to 17:20 Hours

Aircraft: Airbus A380-800

First Flight: 2 Mar 2016

  1. United Airlines (UA37)

Destination: Los Angeles to Singapore

Distance: 14,114 km (8,770 mi; 7,621 nmi)

Duration:  17:00 to 17:55 Hours

Aircraft: Boeing 787-9

Advertisement

First Flight: 27 Oct 2017

 

  1. United Airlines (UA 101)

Destination:  Houston to Sydney

Distance: 13,834 km (8,596 mi; 7,470 nmi)

Duration:  17:30 hours

Aircraft: Boeing 787-9

First Flight: 18 Jan 2018

Advertisement

  1. Qantas (QF8)

Destination:  Dallas/Fort Worth to Sydney

Distance: 13,805 km (8,578 mi; 7,454 nmi)

Duration:  16:50 to 17:05 Hours

Aircraft: Airbus A380-800

First Flight: 16 February 2018 (Retrieved)

 

  1. United Airlines (UA1) & Singapore Airline (SQ31)

Destination:  San Francisco to Singapore

Distance: 13,593 km (8,446 mi; 7,340 nmi)

Advertisement

Duration:  16:30 to 17:35 Hours

Aircraft: United Airlines (Boeing 787-9) & Singapore Airline (Airbus A350-900)

First Flight: UA – 1 Jun 2016 / SA -23 Oct 2016

8 . Delta Air Lines (DL 201)

Destination:  Johannesburg to Atlanta

Distance: 13,582 km (8,439 mi; 7,334 nmi)

Advertisement

Duration:  16:03 to 16:55 Hours

Aircraft: Boeing 777-200LR

First Flight: 1 Jun 2009

 

  1. Etihad Airways (EY171)

Destination:  Abu Dhabi to Los Angeles

Distance: 13,503 km (8,390 mi; 7,291 nmi)

Duration:  16:35 to 17:00 Hours

Advertisement

Aircraft: Boeing 777-300ER

First Flight: 1 Jun 2014

 

  1. Emirates (EK 215)

Destination:  Dubai to Los Angeles

Distance: 13,420 km (8,339 mi; 7,246 nmi)

Duration:  16:00 to 16:20 Hours

Aircraft: Airbus A380-800

Advertisement

First Flight: 26 Oct 2008

 

 

Advertisement

Aviation

Exploring the Different Types of Helicopter Rotor Systems and the Science Behind Them

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.

Advertisement

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.

Advertisement

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.

Advertisement

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.

Continue Reading

Trending