New plane engine designs put the bite on efficiency



The next wave of passenger aircraft design is 15 years away and the engines used could be significantly different from today's models. This is one of the conclusions made by Airbus, the world's biggest civilian aircraft maker, which is battling with its US-based rival Boeing on when and how to replace its popular old single-aisle aircraft, such as the A320 that was introduced in 1988. Airliner designs, which place the engines on the wings of the plane, have remained unchanged for decades. But now engine makers are developing highly efficient engines such as the unducted fan.

These are open-rotor engines featuring several rows of propellers that jut out at different angles like rows of shark's teeth and move in a contra-rotating direction, giving the plane greater lift. The engines could help satisfy airline demands that any new plane must be 30 per cent more efficient to justify the costs of replacing their existing fleets. And in what would grab passengers' attention at the airport, they could be placed on the tailfins of the aircraft, said John Leahy, the chief operating officer of Airbus.

"What is technology of the future on engines? If you talk to the engine manufacturers and tell them to create an engine off a clean sheet of paper, they will probably go with the unducted fan," Mr Leahy said. "That is probably available in the middle of the next decade, maybe." And although carbon-fibre is an increasingly important light-weight material used in wide-bodied planes, which helps with fuel efficiency, Airbus has still not mastered using the material on the less expensive single-aisle aircraft.

"If we were to build a brand new single-aisle aeroplane today, we would probably build it out of metal, not out of composite because composites are very expensive," Mr Leahy said. Any investment in a new design would be a big gamble. Starting in the late 1990s, Boeing spent years and billions of dollars, developing its so-called "sonic cruiser", a plane that would fly faster than any other passenger aircraft.

Its design included a canard, or mini wings, at the front, which performed the same function as a tailplane. It also had two engines mounted at the back on a pair of huge wings-cum-tailplanes instead of traditional wings. But the project was cancelled in 2002 after it prompted little interest among airlines, which favoured lower operating costs over any marginal improvement in speed. Now, with 2025 the arrival date for any new aircraft, Airbus and Boeing are wrestling with interim solutions. Both are considering whether to spend the more than US$1 billion (Dh3.67bn) needed to develop new engines for the 737 or 320, in partnership with engine makers such as CFM International and Pratt and Whitney.

"There are cases not to do it, cases to do it, and that is what we are debating internally back and forth," Mr Leahy said. "I really don't think [Boeing] will re-engine if we don't do it." igale@thenational.ae

In numbers: PKK’s money network in Europe

Germany: PKK collectors typically bring in $18 million in cash a year – amount has trebled since 2010

Revolutionary tax: Investigators say about $2 million a year raised from ‘tax collection’ around Marseille

Extortion: Gunman convicted in 2023 of demanding $10,000 from Kurdish businessman in Stockholm

Drug trade: PKK income claimed by Turkish anti-drugs force in 2024 to be as high as $500 million a year

Denmark: PKK one of two terrorist groups along with Iranian separatists ASMLA to raise “two-digit million amounts”

Contributions: Hundreds of euros expected from typical Kurdish families and thousands from business owners

TV channel: Kurdish Roj TV accounts frozen and went bankrupt after Denmark fined it more than $1 million over PKK links in 2013 

The smuggler

Eldarir had arrived at JFK in January 2020 with three suitcases, containing goods he valued at $300, when he was directed to a search area.
Officers found 41 gold artefacts among the bags, including amulets from a funerary set which prepared the deceased for the afterlife.
Also found was a cartouche of a Ptolemaic king on a relief that was originally part of a royal building or temple. 
The largest single group of items found in Eldarir’s cases were 400 shabtis, or figurines.

Khouli conviction

Khouli smuggled items into the US by making false declarations to customs about the country of origin and value of the items.
According to Immigration and Customs Enforcement, he provided “false provenances which stated that [two] Egyptian antiquities were part of a collection assembled by Khouli's father in Israel in the 1960s” when in fact “Khouli acquired the Egyptian antiquities from other dealers”.
He was sentenced to one year of probation, six months of home confinement and 200 hours of community service in 2012 after admitting buying and smuggling Egyptian antiquities, including coffins, funerary boats and limestone figures.

For sale

A number of other items said to come from the collection of Ezeldeen Taha Eldarir are currently or recently for sale.
Their provenance is described in near identical terms as the British Museum shabti: bought from Salahaddin Sirmali, "authenticated and appraised" by Hossen Rashed, then imported to the US in 1948.

- An Egyptian Mummy mask dating from 700BC-30BC, is on offer for £11,807 ($15,275) online by a seller in Mexico

- A coffin lid dating back to 664BC-332BC was offered for sale by a Colorado-based art dealer, with a starting price of $65,000

- A shabti that was on sale through a Chicago-based coin dealer, dating from 1567BC-1085BC, is up for $1,950

Bareilly Ki Barfi
Directed by: Ashwiny Iyer Tiwari
Starring: Kriti Sanon, Ayushmann Khurrana, Rajkummar Rao
Three and a half stars

Skewed figures

In the village of Mevagissey in southwest England the housing stock has doubled in the last century while the number of residents is half the historic high. The village's Neighbourhood Development Plan states that 26% of homes are holiday retreats. Prices are high, averaging around £300,000, £50,000 more than the Cornish average of £250,000. The local average wage is £15,458. 

UPI facts

More than 2.2 million Indian tourists arrived in UAE in 2023
More than 3.5 million Indians reside in UAE
Indian tourists can make purchases in UAE using rupee accounts in India through QR-code-based UPI real-time payment systems
Indian residents in UAE can use their non-resident NRO and NRE accounts held in Indian banks linked to a UAE mobile number for UPI transactions

Specs

Engine: Dual-motor all-wheel-drive electric

Range: Up to 610km

Power: 905hp

Torque: 985Nm

Price: From Dh439,000

Available: Now

The years Ramadan fell in May

1987

1954

1921

1888

Afghanistan fixtures
  • v Australia, today
  • v Sri Lanka, Tuesday
  • v New Zealand, Saturday,
  • v South Africa, June 15
  • v England, June 18
  • v India, June 22
  • v Bangladesh, June 24
  • v Pakistan, June 29
  • v West Indies, July 4

A Bad Moms Christmas
Dir: John Lucas and Scott Moore
Starring: Mila Kunis, Kathryn Hahn, Kristen Bell, Susan Sarandon, Christine Baranski, Cheryl Hines
Two stars

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%3Cp%3E%3Cstrong%3EEngine%3A%20%3C%2Fstrong%3E2.0-litre%20four-cyl%20turbo%20%2B%20mild%20hybrid%0D%3Cbr%3E%3Cstrong%3EPower%3A%20%3C%2Fstrong%3E204hp%20at%205%2C800rpm%20%2B23hp%20hybrid%20boost%0D%3Cbr%3E%3Cstrong%3ETorque%3A%20%3C%2Fstrong%3E320Nm%20at%201%2C800rpm%20%2B205Nm%20hybrid%20boost%0D%3Cbr%3E%3Cstrong%3ETransmission%3A%20%3C%2Fstrong%3E9-speed%20auto%0D%3Cbr%3E%3Cstrong%3EFuel%20consumption%3A%20%3C%2Fstrong%3E7.3L%2F100km%0D%3Cbr%3E%3Cstrong%3EOn%20sale%3A%20%3C%2Fstrong%3ENovember%2FDecember%0D%3Cbr%3E%3Cstrong%3EPrice%3A%20%3C%2Fstrong%3EFrom%20Dh205%2C000%20(estimate)%3C%2Fp%3E%0A
Key facilities
  • Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
  • Premier League-standard football pitch
  • 400m Olympic running track
  • NBA-spec basketball court with auditorium
  • 600-seat auditorium
  • Spaces for historical and cultural exploration
  • An elevated football field that doubles as a helipad
  • Specialist robotics and science laboratories
  • AR and VR-enabled learning centres
  • Disruption Lab and Research Centre for developing entrepreneurial skills