May 12, 2023, ©. Leeham News: This is a summary of the article New aircraft technologies. Part 12P. Airframe efficiency improvement. The article discusses the different drag types that affect an airframe, their magnitudes, and the physics behind them. Airframe efficiency improvements are about reducing these drags.
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By Bjorn Fehrm
May 12, 2023, ©. Leeham News: This is a complementary article to Part 12. Airframe efficiency improvement. It discusses in detail the next-generation airframe improvements we can expect. We start with detailing the size of airframe inefficiency for today’s airframes, then look at the areas we can improve.
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By Bjorn Fehrm
May 11, 2023, © Leeham News: In our series about the viability of the business plans for small airliners (nine to 50 seats), we have covered how energy/fuel consumption and maintenance scales with the size of the airliner.
The cost factor we examine today is the cost of using the airport and airways infrastructure. Airlines pay for landing plus parking at airports and for using their passenger facilities. The airlines also pay for using the Air Traffic Control (ATC) infrastructure when flying the routes.
Each airport and national airway system have their own fee structures. We check how these scale with aircraft size.
Figure 1. The TECNAM P2021 piston prop airliner is also offered in an electric version called P-Volt. Source: TECNAM.
May 9, 2023, © Leeham News: Last week, I provided an overarching view of the business model the engine makers used for decades to sell their engines and services to the airlines and leasing companies. Today, we discuss this in more detail and move to other issues facing engine makers as well.
Aviation Week’s MRO Americas last month was the venue for the engine panel.
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The panelists include two from the manufacturers, Becky Johnson, I’m the Director of Marketing for CFM commercial programs at GE Aerospace, and Sam Raby, who is Associate Director at Pratt & Whitney for aftermarket marketing and strategy. Two other panelists were from the MRO sector: Russ Shelton, president of GA Telesis Engine Services, and Sebastian Torhorst, Head of Sales for Energy Services for the Americas for Lufthansa Technik.
As LNA wrote last week, the business model relies on selling engines at a steep, steep discount—sometimes up to 80%, and in rare instances, the engine maker gave (as in free) engines to customers. In either case, the quid pro quo was to enter into long-term service contracts for parts and maintenance, repair and overhaul (MRO). Deeply discounted sales meant it could take 10-15 years for the engine makers to recover development costs.
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By Scott Hamilton and Bjorn Fehrm
May 8, 2023, © Leeham News: India’s GoFirst Airlines filed for bankruptcy last week. The carrier pointed to around 29 of its 50 Pratt & Whitney Geared TurboFan-powered Airbus A320neos being grounded as the reason.
The aircraft have been grounded for months. Despite negotiations with PW and a favorable arbitration ruling, GoFirst says PW failed to provide replacement engines. As a result, GoFirst paid about $196m in lease rates for the grounded aircraft, without being able to fly them for revenue.
Lufthansa Group last week complained that a third of its Swiss Airbus A220 fleet, also powered by the GTF, are likewise grounded with technical issues. As LNA previously reported, Air Baltic, Egyptair and Air Senegal also have A220s grounded. Iraqi Airlines has some A220s that are grounded. And now there’s news that Embraer E195-E2s at KLM’s regional airline are also grounded due to GTF issues.
India’s Indigo Airlines also has a large number of A320neos grounded with GTF problems. About 11% of the nearly 3,000 A320neos in service are grounded or fly one a week, an Aviation Week analysis revealed.
PW’s reputation was already badly damaged before the GoFirst bankruptcy. However, an LNA analysis shows that forward orders for engines on the A320neo already were suffering.
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By Bryan Corliss
May 5, 2023 © Leeham News – Embraer on Thursday reported a loss in what typically is a slow quarter for the Brazilian jet-maker.
However, executives talked up plans for production ramp-ups and ongoing sales campaigns as they pointed toward growth in future quarters.
“We are on track and we are going to get there,” CEO Francisco Gomes Neto said.
May 5, 2023, ©. Leeham News: In our series on the different technologies available when developing next-generation airliners, we have covered the fuselage configuration and engine options.
Now we turn to airframe technologies. We will look at different airframe architectures, their advantages, and disadvantages. To support the discussion, we will model the different variants in our Airliner Performance and Cost model to understand their characteristics.
By Bjorn Fehrm
May 4, 2023, © Leeham News: Airbus has presented its results for the first quarter of 2023. The supply chain problems that lowered the 2022 production targets and that Airbus thought would subside in 2023 persist.
The company sticks to its 2023 guidance of delivering 720 commercial aircraft but now adds that the year will be more backloaded than thought. Guidance of EBIT adjusted of €6bn and Free cash flow of €3bn remains.
Airbus delivered 127 commercial aircraft in the quarter, compared with 140 last year. Net orders increased from 83 for 1Q2022 to 142 for the quarter.
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By Bjorn Fehrm
May 4, 2023, © Leeham News: In our series about the viability of the business plans for small airliners (nine to 50 seats), we have covered how energy and fuel consumption scales with the size of the airliner.
The cost factor we examine today is the maintenance cost for keeping an airliner fit for purpose and safe.
We use the Leeham aircraft performance and cost model to get the data for the maintenance costs for airliners going from nine to 200 seats.
Figure 1. The Cessna Sky Courier is a new 19-seat small airliner with conventional propulsion. Source: Textron Aviation.
By Bryan Corliss
March 3, 2023 © Leeham News – The manufacturing errors its team made on Boeing 737 MAX fuselages will cost Spirit AeroSystems at least $31 million to fix, with work on the units still at the Wichita factory going on until the end of July, the company reported this morning.
But that’s just the start, Spirit executives warned.
“Additional costs are expected, including costs Boeing may assert to repair certain models of previously delivered units in their factory and warranty costs related to affected 737 units in service,” the company said in its quarterly earnings release.
The time and cost to make those repairs will have to be determined on “a unit-by-unit analysis,” Spirit said, adding that it “cannot reasonably estimate the remaining potential costs at this time.”
Repairs to the fuselages on hand in Wichita will cost $100,000 to $150,000 each, the company estimates. Spirit has revised its manufacturing process and implemented new quality controls, the company said.
Overall, Spirit reported an operating loss of $95 million for the quarter, which more than doubled its losses in the first quarter of 2022. The growing losses came even though Spirit increased revenues by 22% year-over-year, to $1.4 billion.
Spirit said that since the close of the quarter on March 30, it has received $230 million in cash advances from customers, of which $180 million has come from Boeing. It will receive another $50 million in advances later this year. Spirit is to repay those advances in 2024 and 2025.