Bjorn’s Corner: New aircraft technologies. Part 9P. Engine core advances

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By Bjorn Fehrm

April 21, 2023, ©. Leeham News: This is a complementary article to Part 9. Engine core advances. It discusses in detail the next-generation propulsion system cores and what efficiency improvements to expect from different technological advancements.


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An uneven financial recovery among OEMs and Suppliers

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By Vincent Valery

Introduction  

March 27, 2023, © Leeham News: In an article last year, LNA highlighted the divergence in the post-Covid-19 recovery among OEMs and select Tier 1 suppliers. Airbus had higher profits than before the Covid-19 pandemic, while all others lagged. Revenues were well below 2019 levels.

Commercial Aviation OEMs were severely impacted last year by supply chain disruptions. Airbus and Boeing ramped up production significantly slower than envisioned on all programs. The war in Ukraine and tighter financial conditions are complicating the situation further.

LNA collected financial information on the big three aircraft manufacturers and 10 major commercial aircraft suppliers to assess how quickly they recovered. There will also be an analysis of the numerous charges Airbus and Boeing have taken since 1999 through 2022.

Summary
  • Significant differences among the three major aircraft OEMs;
  • One engine OEM lagging;
  • Some OEM suppliers are struggling financially;
  • Twelve-digit accumulated charges at Airbus and Boeing combined.


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The Airbus A220-500, a deep-dive analysis, Part 2

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By Bjorn Fehrm

Jan. 23, 2023, © Leeham News: Following Thursday’s article about an up-and-coming Airbus A220-500, we now look at the operational cost for the A220-500 and compare it with the A320neo it should replace.

We put the data we discussed in Thursday’s article in our Aircraft Performance and Cost model, fly the aircraft on a typical single-aisle mission and look at the results.

Figure 1. A rendering of an A220-500 that takes 157 passengers. Source; Leeham Co.

Summary:
  • The A220-500 would be a viable replacement for an A320neo.
  • With the changes/improvements we discussed, it beats the A320neo on operational costs. The differences are not of the speculated level, however.


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GE, Raytheon report orders surges, but labor and supply chain headwinds

By Bryan Corliss

Jan. 24, 2023, © Leeham News – Aerospace suppliers GE and Raytheon both reported fourth-quarter sales surges, as the commercial aviation industry continued its recovery from the worst of the Covid pandemic. 

Both companies also project strong sales growth in 2023, but warned investors that there are lingering supply chain issues and labor shortages that could hold them back.

“While we are broadly beginning to see our supply chain improve, it is not yet at the levels we need,” Raytheon CFO Chris Calio told stock analysts during the company’s fourth-quarter earnings call on Tuesday. “We are assuming a recovery as we move into the back half of the year.” 

  • GE reports backlog near 10,000 for LEAP
  • Raytheon expects double-digit growth for Collins, P&W
  • Supply chain improving, but still tangled
  • Raytheon talks about Boeing, Airbus rates

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The Airbus A220-500, a deep-dive analysis

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By Bjorn Fehrm

Jan. 20, 2023, © Leeham News: It’s a question “of when, not if” there will be an A220-500, we conclude in Tuesday’s article.

We have known about the -500 since the Bombardier days. A longer CS300 was part of the original concepts when the CS100 and CS300 were developed to safeguard that no decision on the smaller variants precluded a larger variant.

As Airbus A321 grows its share of the A320 lines’ output, an A220-500 makes sense, but only when the two A220 final assembly lines in Mirabel and Mobile can produce enough A220s to satisfy demand.

What would be the characteristics of an A220-500? We use our aircraft design and performance model to determine what is possible.

Figure 1. A rendering of an A220-500 that takes 157 passengers. Source: Leeham Co.

Summary:
  • The Airbus A220 has the base capabilities for a stretch to an A220-500.
  • Some changes/improvements are needed, but these are limited to detailed changes beyond a fuselage stretch.


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Airbus CCO: “When,” not “if” A220-500 comes; a deep-dive analysis

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By Scott Hamilton

Jan. 18, 2023, © Leeham News: Airbus chief commercial officer Christian Scherer has been open: it is a matter of “when,” not “if” Airbus proceeds with a stretched A220-500.

A220-500. Credit: Leeham News.

The A220-500 would be the third member of the A220 family. The A220-100 is a 110-seat airplane in a typical two-class configuration. The A220-300 seats 135 passengers. The A220-500 would seat around 157, competing head-on with the Airbus A320neo at 152 and the Boeing 737-8 at 164.

The -500 was projected by Bombardier as the CS500. Bombardier focused its commercial aviation future on the C Series. In doing so, it neglected sales efforts on the CRJ and Q400 regional jet and turboprop. Development of the C Series, like programs at Airbus and Boeing, ran billions of dollars over budget. Developed concurrently with two corporate jet programs that also ran well over budget, Bombardier was on a path toward bankruptcy.

Airbus purchased a controlling interest in the CSeries program in 2017 and now owns 75% of the program. But so far, Airbus hasn’t stemmed the losses that began under Bombardier. Without the heft of Airbus’ buying power, Bombardier entered costly contracts with suppliers. Airbus has been renegotiating the contracts, with some success, but not enough. Ramping production up to 14 a month by 2025 from the current 6/mo is a key goal. Demand is there and the higher rate will lower costs.

But the A220-500 will compete with Airbus’ own A320neo. So, the plan to launch the A220-500 has this cloud over the decision.

Some believe that the A220-500 will be so much more efficient than the 737-8 that it will “kill” Boeing’s backbone airplane. LNA doesn’t agree.

This article is the first of three that analyzes the A220’s position in the market and the economics of a potential A220-500 vis-à-vis the A320neo and 737-8 MAX.

Summary
  • Is the A320neo already on its way out, prompting plans for the A220-500?
  • Talk of adding CFM LEAP to provide an engine choice.
  • How does A220-500 compare economically with A320neo, 737-8?


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Pontifications: A lost decade for new airplanes

By Scott Hamilton

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Dec. 5, 2022, © Leeham News: In September 2020, LNA wrote that commercial aviation was facing a “lost decade.”

The impetus for this prediction was the COVID-19 pandemic crisis.

“Commercial aviation is facing a lost decade due to COVID,” we wrote. “Yes, most forecasts target 2024-2025 as returning to 2019 passenger traffic and aircraft production levels. However, LNA in July published its own analysis indicating full recovery may not occur until 2028.”

Nobody predicted that effective vaccines would emerge as quickly as they did. Drug makers in the US and Europe moved heaven and earth to produce vaccines to fight COVID-19. These have been, by and large, extremely effective. (I’ve had two shots and three boosters and have not caught COVID, despite being at one major conference with 13,000 people.)

China created its own vaccine, which failed to stem the tide there. President Xi quickly adopted total lockdowns at the first sign of outbreaks. Despite this, China is now setting records for new infections. Commercial aviation recovery there remains underperforming. China’s performance illustrates the underlying reasoning we had in concluding commercial aviation was facing a lost decade.

This sector still faces a lost decade, though for some fundamentally different reasons.


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MTU gets support from Pratt & Whitney to develop the WET engine

By Bjorn Fehrm

November 29, 2022, © Leeham News: MTU and Pratt & Whitney presented an EU Clean Sky project today where they will develop an advanced engine concept based on the Pratt & Whitney GTF. The project is called SWITCH, an acronym for Sustainable Water-Injecting Turbofan Comprising Hybrid-Electrics.

There are participants from 11 countries in the project, among them Pratt & Whitney’s sister company Collins aerospace, GKN’s Swedish part, and Airbus.

The engine, which has a mild parallel hybrid architecture, extracts more energy from the turbofan fuel by driving the core exhaust through a vaporizer, where it recovers more heat from the core exhaust, Figure 1. Water from the exhaust, extracted from the core exhaust in a condenser, is heated to steam by the vaporizer and then drives a steam turbine that co-drives the fan. The steam is finally injected into the combustor to lower emissions.

The WET cycle will gain about 10% efficiency compared to today’s GTF. The concept also has a hybrid part which is primarily used for a low-emission taxi.

Figure 1. The architecture of the SWITCH engine. Source: SWITCH.


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Engine Development. Part 10. Next generation engines

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By Bjorn Fehrm

Introduction

October 20, 2022, © Leeham News: We finish our series about engine development by looking at the next-generation engines and future trends in airliner engine development.

We limit this look forward to engines that burn Jet fuel (Jet-A1 or SAF) as green propulsion solutions are a vast field and justify their own series. We will pick this up at a future date.

The Boeing 777-9, the first airliner with next-generation engines. Source: Boeing.

Summary
  • The major reduction in fuel consumption and, thus, CO2 emissions will come from new engines.
  • The technologies to drive fuel consumption down a further 15% are there.


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Engine Development. Part 9. Gearbox or not?

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By Bjorn Fehrm

Introduction

October 13, 2022, © Leeham News: In our series, we look at the development of the latest single-aisle engines. Should these be geared? What do you gain and risk with a geared design? Is this a new development, or has it been around for a long time?

We examine the development of single-aisle engines since 2000, their fuel efficiency, and operational reliability.

Summary
  • A geared design fixes some fundamental problems in a two-shaft turbofan.
  • CFM proves you could just as well further develop what you have.


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