Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Boeing’s 737 North Line and the Everett factory: in transition now June 9, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 25. June 6, 2025
- New RISE powerplant benefits from decades of GE research and development June 5, 2025
- Engine makers emphasizing durability, reliability June 4, 2025
- Boeing CEO: Lessons learned are key to certification of 737-7/10 and 777X June 2, 2025
Bjorn’s Corner: Sustainable Air Transport. Part 9. Parallel Hybrids.
March 4, 2022, ©. Leeham News: This is a summary of the article Part 9P. Parallel Hybrid, the Deeper Discussion.
We look into the Pratt & Whitney, Collins Aerospace, and De Havilland project to create a Parallel Hybrid propulsion alternative for the Dash 8 turboprops.
The project “targets a 30% reduction in fuel burn and CO2 emissions, compared to a modern regional turboprop airliner” according to the Pratt & Whitney press release.
Figure 1. The Parallel Hybrid components of the project. Source: Pratt & Whitney video.
Bjorn’s Corner: Sustainable Air Transport. Part 9P. Parallel Hybrid. The deeper discussion.
Subscription required
By Bjorn Fehrm
March 4, 2022, ©. Leeham News: This is a complementary article to Part 9. Parallel Hybrid. It uses Leeham Company’s Aircraft Performance Model from our consultancy practice to analyze the design of a Parallel Hybrid aircraft for regional operations.
Our design brief is to make turboprop upgrade packages for De Havilland DH8-200,-300, and-400 aircraft. By using a Parallel Hybrid we could “target a 30% reduction in fuel burn and CO2 emissions, compared to a modern regional turboprop airliner” according to Pratt & Whitney Canada. Time to check if we can reach these levels.
A Boeing 787-10 HGW, how good is it? Part 2
Subscription Required
By Bjorn Fehrm
Introduction
March 3, 2022, © Leeham News: Last week, we looked at the predicted performance of a new version of Boeing’s 787-10 with an increased Gross Weight as announced by Boeing (called 787-10 HGW by us). We compared its performance and economics to Airbus’ A350-900, the nearest competitor.
The comparison was over a very long route, LAX to Sydney, where the 787-10 HGW performed well but was limited on the cargo side. Now we fly San Franciso to Tokyo, a more typical route for these aircraft, looking at the performance and operating economics.
Summary
- The 787-10 can perform long routes like LAX to Sydney in the HGW version but has payload limits compared with an A350-900.
- On the typical 10 to 12 hours routes, the 787-10 HGW shows its strengths.
HOTR: Airbus responds to Qatar lawsuit; (Update): Boeing statement on Russia-Ukraine
By the Leeham News Team
Feb. 28, 2022, © Leeham News: Airbus last Friday filed its answer to the lawsuit filed by Qatar Airways over the A350 paint issues. Qatar claims 21 A350s have defective paint issues that lead to safety concerns for lightning protection. Qatar’s national regulator grounded the airplanes.
The manufacturer replies in its answer that it believes the regulator acted at the airline’s request, which Airbus believes was motivated by economic reasons rather than safety issues.
Airbus also said that the paint stripping of the A350 intended for repainting was improperly done and deviated from Airbus’ procedures outlined in its manuals.
The large twin-aisle and freighter replacement market
Subscription Required
By Vincent Valery
Introduction
Feb. 28th, 2022, © Leeham News: In recent weeks, we compared the 787-10 Heavy Gross Weight (HGW) performance against the A350-900. The 787-10 HGW will impact sales campaigns against the A350-900 and those of larger aircraft, the A350-1000 and 777X, and large freighters.
LNA now analyses the potential replacement market for very large aircraft (seating 350 or more passengers in standard configurations) and large factory-built freighters.
Summary
- Large twin-aisle campaign opportunities;
- Passenger and cargo fleet commonality considerations;
- Large factory freighter operators.
Pontifications: Ukraine impact on commercial aviation
By Scott Hamilton
Feb. 28, 2022, © Leeham News: The clouds are very dark over Ukraine today. The unprovoked invasion of Ukraine by an international autocratic lying amoral thug is horrible. What the implications are for neighboring European countries, the greater Europe, the US, and the rest of the world won’t be fully understood for months.
But reality is reality, and LNA’s focus on commercial aviation must look at things from this perspective—narrow as it is in the context of human tolls underway in Ukraine now. In the dark cloud of the Ukraine crisis, we must look at what the impacts might be on commercial aviation.
Bjorn’s Corner: Sustainable Air Transport. Part 8. Serial Hybrids.
February 25, 2022, ©. Leeham News: This is a summary of the article Part 8P. Serial Hybrid, the deeper discussion.
We take an ES-19 type of battery aircraft and add a range extender to avoid the inadequate range we found in Part 6 and 6P.
Initially, it seems a good idea. We can use the benefits of the battery and then complement it with energy from the range extender. As you systematically work through the concept, the problems surface.
Figure 1. Serial Hybrid works for cars (Toyota Prius pictured), but not for aircraft. Picture: Toyota.
Bjorn’s Corner: Sustainable Air Transport. Part 8P. Serial Hybrid. The deeper discussion.
Subscription required
By Bjorn Fehrm.
February 25, 2022, ©. Leeham News: This is a complementary article to Part 8. Serial Hybrid. It uses Leeham Company’s Aircraft Performance Model from our consultancy practice to analyze the design of a hybrid aircraft for short-haul commuter operations.
Our design brief is to make an aircraft that uses a minimum of carbon-based fuel by combining battery-based energy with energy from a generator driven by a gas turbine. Such a combination is called a Serial Hybrid.
Figure 1. Different electric aircraft architectures compared with the classical Turbofan/Turboprop. Source: Leeham Co.
Read more
HOTR: Putin can shut down commercial aviation, consultant warned
Feb. 24, 2022, © Leeham News: The invasion by Russia into Ukraine could shut down commercial aviation production, a supply chain consultant expert predicted earlier this month.
Kevin Michaels, managing director of AeroDynamic Advisory, a supply-chain consulting firm, warned at a supplier conference Feb. 8 that Russian President Vladimir Putin “could shut down the commercial aerospace business if he chose to do so.”
A Boeing 787-10 HGW, how good is it?
Subscription Required
By Bjorn Fehrm
Introduction
February 24, 2022, © Leeham News: The CEO of Boeing Commercial Aircraft (BCA), Stan Deal, said at the Singapore Air show the company worked on increased gross weight versions of both the 787-9 and -10.
Target is to get the 787-10 to the range of the aircraft it shall replace, the 777-200ER and -300ER. It means more than 7,000nm of range against the 6,400nm of today.
How many tonnes of increased Gross weight does this mean, and what would be the performance compared with the Airbus A350-900? We use our airliner performance model to find out.
Summary
- The 787-10 can grow to a range of over 7,000nm with a modest increase of its gross weight.
- It will be competitive with the A350-900 but for the longest routes in such a variant.