Airport

What do pilots think of the new “circular” runway concept?

According to Quora Debate by Laurence Sizemore current Boeing 767 captain.

I cringed when I saw the simulated video of the A380 landing on the circular runway (and not only because of the gear-up approach!). It looks like a wingtip strike or a pod (engine) strike waiting to happen.

The idea might work fine when everything goes according to plan, but a runway excursion would be absolutely disastrous, as would any sort of long landing (ie: landing somewhere after the intended touch-down point).

Land too far to the inside of the circle and you drag wingtips and engine pods on the ground and risk cartwheeling to the collective death of everyone on board.

Land too far to the outside of the circle and you ‘high side’ (motorcycling term), catch the outer landing gear in the dirt, spin around and risk cartwheeling to the collective death of everyone on board.

Takeoffs are going to be interesting. One of the more difficult types of aircraft to fly is the ‘tailwheel’ design. They’re challenging to fly in part because a take-off is a three-step process whereby you first lift the tail off the ground, stabilise, and then lift the rest of the aircraft off the ground. A take off on a banked circular runway would be similarly complex: you’d need to lift the inside landing gear off the ground, stabilise, then lift the rest off the ground… and do you lift the nose gear first, or second, or when?! If you get the timing wrong, then you either drag wingtips and engine pods on the ground and risk cartwheeling to the collective death of everyone on board, or catch the outer landing gear in the dirt, spin around and risk cartwheeling to the collective death of everyone on board.

If you do take off ‘normally’, you’d achieve that by making the diameter of the circle you carve out in pitch to be less than the diameter of the banked runway, and then you’d lift off pitching up and simultaneously rolled left, you’d need a heap of opposite rudder input to counter the sideslip and yaw imposed by the roll, and the pilot flying would be very very busy while they’re very very close to the ground. If an engine quits at that point in the flight, you drag wingtips and engine pods on the ground and risk cartwheeling to the collective death of everyone on board.

I have problems with the claim that up to three aircraft could operate from the same runway at once. Again, it will work well when everything goes to plan, but on that one day when the guy behind you can’t stop in time (or doesn’t know you’re there because he can’t see you in the fog), he rolls right over the top of you to the collective death of everyone on board both aircraft. Would anyone like to try Tenerife again?

Aviation is a very risk averse business. It’s just too damned expensive to make mistakes. The circular runway concept is a lot like communism: it’s an wonderfully beautiful idea that absolutely can not work in real life!

About Author

Laurence Sizemor

Jeff Loftin, Former USAF fighter pilot, current Boeing 767 captain

and Peter Wheeler, Qualified flight instructor in Australia, NZ and UK.

you can follow him : click

Courtesy : Laurence Sizemor by Quora

Airport

Toronto’s Abandoned Airport Set to Transform into a Futuristic City

In a bold and visionary move, an abandoned airport in Toronto, Canada, is set to undergo a dramatic transformation into a sprawling mega-city, thanks to an ambitious £12.3 billion ($22 billion CAD) redevelopment plan.

This groundbreaking project has recently been given the green light by local officials and promises to create a vibrant, thriving community over the next three decades. Spanning 370 acres of unused land, the development will see the creation of seven distinct neighborhoods, designed to accommodate up to 83,500 residents.

Airbus Secures Green Light for A321XLR Mini-Suite Installations

What sets this project apart is its commitment to preserving the historical essence of the former airport. Developers have pledged to retain key elements of the site, including 11 aircraft hangars and half a mile of the original runway. These remnants of the past will be ingeniously repurposed, giving the new city a unique character that pays homage to the area’s rich history, particularly its role in aircraft manufacturing during World War II.

The heart of the first mixed-use district will feature the old hangars, which will serve as central hubs for community activities. These iconic structures will be surrounded by a mix of shops, restaurants, and even a library, all lining the preserved runway, now reimagined as a pedestrian walkway. This blend of the old and the new is expected to attract a diverse range of businesses and residents, creating a vibrant, interconnected community.

Saudi Arabia Planning New Cargo Airline with Boeing, Airbus Jets

The first phase of development is anticipated to generate 7,000 new jobs, providing local residents with opportunities to live and work within the same community. This district will include 2,850 housing units, primarily composed of mid-rise apartment buildings, catering to a variety of lifestyles and needs.

Northcrest Developments, the company behind this visionary project, believes that the unique nature of the development will appeal to businesses seeking distinctive and innovative workspaces that are currently unavailable in the market. According to company spokesperson Goring, “There’s an opportunity to attract companies that actually want to be here but can’t because they can’t find these types of locations.”

As the project progresses, it is expected to become a model for sustainable urban development, seamlessly blending history with modernity.