Bjorn’s Corner: Fly by steel or electrical wire, Part 6

By Bjorn Fehrm

August 30, 2019, ©. Leeham News: In our series about classical flight controls (“fly by steel wire”) and Fly-By-Wire (FBW or “fly by electrical wire”) we now discuss the flight control laws which are used for Classical flight controls and FBW systems.

Figure 1. The Boeing 737 artificial feel unit operating over right rod increases roller pressure on feel unit cam, by it making displacement of both left and right rods over Elevator Control Quadrant harder (the arrows depict an elevator up command). Source: Boeing.

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Opportunity and challenges of a 787-10ER, Part 2.

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By Bjorn Fehrm

Introduction

August 29, 2019, ©. Leeham News: In last week’s article we went through the reasons for a longer range 787-10, a 787-10ER version (ER for Extended Range). We could conclude it would be an attractive aircraft for the market if it could get another 1,000nm in range.

We use our airliner performane model to analyze how this can be achieved and if Boeing would face large engineering challenges to get to this range.

Summary:
  • The 787 program would benefit from a longer range 787-10 as described in our first article
  • Now we analyze how to achieve the extra range and what trades will be necessary to convert the 787-10 to a 787-10ER.

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Pontifications: Embraer sees E175-E2 orders this year outside US

By Scott Hamilton

Aug. 26, 2019, © Leeham News: My column July 22 entitled Embraer counts on Boeing heft for E2 sales boost raised a few hackles in Sao Jose dos Campos, headquarters of Embraer.

It wasn’t meant to. Rather, slow sales of the E-Jet E2 this year caught the attention of more than a few in the market, so I thought putting some perspective on the issue was worthwhile.

After all, sales of the Bombardier C Series were slow between the announcement of selling 50.01% of the program and consummation of the deal nearly a year later.

Such is the case with E2 sales pending consummation of the Boeing-Embraer joint venture, which has a target date of closing by year end, I wrote.

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Airbus faces challenges for A330neo

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Aug. 26, 2019, © Leeham News: Airbus faces near-term challenges with its production skyline for the A330, even at a reduce rate of 4/mo, an analysis shows.

Looking forward from next year, when there are slightly more deliveries scheduled than production rates—a function of some leftover 2019 builds—Airbus faces an easily-filled gap in 2021 but huge production gaps beginning in 2022.

Even if Letters of Intent and options were fully converted to firm orders, big production gaps will exist.

A production rate cut seems inevitable in the near future.

Summary
  • Key Emirates order not yet firmed up.
  • Big, 200 unit A330-200R LOI no longer appears in data.
  • Why keep the A330neo in the product line?

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Bjorn’s Corner: Fly by Steel or Electrical wire, Part 5

By Bjorn Fehrm

August 23, 2019, ©. Leeham News: In our series about classical flight controls (“fly by steel wire”) and Fly-By-Wire (FBW or “fly by electrical wire”) we now look at practical implementations after discussing the authority of the flight control system last week.

As before we compare the classical 737 system to the A320 FBW system.

Figure 1. The two mechanical control pitch systems of the 737 are visible in the upper left. Each side has a complete system shown at the lower part of the figure (except for the trim which has dual wire sets but one actuator motor/drum). Source: Boeing.

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Opportunity and challenges of a 787-10ER

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By Vincent Valery

Introduction

Aug. 22, 2019, © Leeham News:  By 2024 the 777-300ER will have been in service for 20 years and the 777-200ER 27 years.

United Airlines 787-10. Credit: United Airlines.

LNA was the first to report the 777-8 entry-into-service will slip by at least two years. Boeing confirmed a delay in the 777-8 development, but not the timeline. Further delays (or an outright cancellation) for the passenger 777-8 are a real possibility. Boeing faces the prospect of not having a latest generation offering in the 330-370 seat market at a time demand for such aircraft is expected to pick up.

As part of the Air New Zealand commitment to purchase eight Boeing 787-10s, Boeing and General Electric are increasing the maximum takeoff weight to add more range.

In a similar fashion to the 777-300ER 20 years ago, Boeing might improve the 787-10 further to turn it into a fully-fledged ER variant. We will analyze the rationale for launching such variant and the challenges Boeing needs to overcome.

Summary
  • Remediate a product gap
  • Opportunities arising from surging 777 retirements
  • A mixed track record of previous stretches and range improvements
  • Target range for the 787-10
  • Challenges associated with achieving those targets
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Boeing’s Long Term Cash Flows

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By Vincent Valery

Introduction

Aug. 19, 2019, © Leeham News:Boeing’s long-time priorities, adopted after the 787 program finally was past its troubles, is shareholder value.

Boeing has spent tens of billions of dollars over the years in stock buybacks. It has regularly increased dividend payments.

In the context of a global aviation boom, the Commercial Airplanes division has generated the bulk of cash flow growth in recent years for the company. The creation of Boeing Global Services is a move toward achieving mid-teen margins for The Boeing Co.

Just like any aircraft OEM, the ability to generate cash flows rests on having an up-to-date and desirable product line up for customers.

Before the Ethiopian Airlines Boeing 737 MAX crash, things were looking good for Boeing. Assuming a successful resolution of the 737 MAX crisis, Boeing should return to generating strong operating cash flows afterward.

However, how long is the current product line up expected to sustain those cash flows and what could Boeing do about it?

Summary
  • Dreamliner: from costly delays to cash flow machine
  • Boeing 777 provided strong cash flows at critical time and 737 rode global aviation boom until grounding
  • Significant production gaps on 737, 777 and 787 appear from mid 2020s, potentially threatening cash flow generation
  • New variants, derivatives and clean sheet design would sustain cash flows longer.

 

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Pontifications: Trump-China trade war hits Boeing

By Scott HamiltonAug. 19, 2019 © Leeham News: There have been no widebody orders placed by China with Boeing since President Trump launched a trade war in March 2018, hurting American’s biggest exporter and affecting the US balance of trade.

In fact, there have been no announced orders by China with Boeing since October 2017. Only 22 China orders were announced in 2017.

Boeing has a large number of Unidentified 737s listed on its website. It is widely believed that China accounts for perhaps as many as 25% of these, but Boeing won’t comment.

China historically accounted for between 25% and 33% of Boeing’s annual deliveries.

Since 2011, China took delivery of more than 170 widebody passenger and freighter jets, or 9.3% of all widebodies delivered by Boeing.

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Bjorn’s Corner: Fly by steel or electrical wire, Part 4

By Bjorn Fehrm

August 16, 2019, ©. Leeham News: In our series about classical flight controls (“fly by steel wire”) and Fly-By-Wire (FBW or “fly by electrical wire”) we this week discuss the Flight Control System’s authority to execute maneuvers by its different parts and why the authority of these parts is a fundamental parameter when designing the system.

Figure 1. Embraer Phenom 300’s Yaw damper rudder. Source: Embraer.

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Will the A220 drive the trans-Atlantic fragmentation to smaller jets? Part 2.

By Bjorn Fehrm

Introduction

August 15, 2019, ©. Leeham News: Airbus is increasing the Gross Weight of its A220 variants by 5,000lb from 2H2020. It is to increase the already long range of the aircraft according to Airbus.

We looked at the typical trans-Atlantic routes this longer-range capability enabled last week. Now we explore further route areas and compare the A220 economics to the Boeing 737-8 and Airbus A321LR.

Summary:

  • Last week we saw the A220 could open trans-Atlantic routes from West Europe to East Canada and North-East US.
  • This week we explore further alternatives and explore the economics of the A220 as an aircraft for long and thin routes.

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