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.
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.
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.
By Judson Rollins
November 16, 2021, © Leeham News: ATR and Pratt & Whitney Canada jointly announced a new PW127XT engine for the ATR-42 and -72 series at the Dubai Air Show. The XT designation stands for “extra time on wing.”
The 40% time on wing assumes a 60-minute average mission in “benign environments.” The reduction in maintenance cost is driven by a requirement for just two scheduled engine events in ten years. Fuel burn improvements were achieved via a new compressor and updated turbine module. Read more
The first report appeared Oct. 18, 2021.
Oct. 25, 2021, © Leeham News: Embraer appears marching toward launching a new turboprop aircraft next year with a targeted 2027 entry into service.
The timing will be determined by the engine. Pratt & Whitney, GE Aviation and Rolls-Royce have development programs. PW and GE are farthest along. PW is thought to have the best chance of winning Embraer’s business. (Pratt & Whitney supplies the engines for the E2 jet. GE supplied the engines for the E1.)
In an interview at the IATA AGM Oct. 3-5 in Boston, Arjan Meijer, the president of Embraer Commercial Aviation, said the competition remains open today.
March 26, 2021, ©. Leeham News: This week, we look at combining the propulsion and hydrogen tank in an integrated nacelle as Airbus proposes in Figure 1.
Airbus calls it its “pod” solution. What are the advantages, and what challenges does it present?
February 12, 2021, ©. Leeham News: After covering the basics of fuel cells last week in our hydrogen airliner series, we now look at what type of system to choose for aircraft propulsion and onboard systems power.
We analyze the propulsion side this week.
By Judson Rollins & Bjorn Fehrm
Jan. 11, 2021, © Leeham News: COVID-19 may ultimately prove to be a net positive for turboprop manufacturers. Near-term orders will be pinched just as for jets, but a long-term loss of business travel and the resulting impact to airline yields will make turboprops’ superior unit costs appealing for shorter missions.
Turboprop engines create their thrust with a very high bypass ratio. The result is 30% better fuel economy than a jet. But it also means 30% lower speed. This limits turboprops to stage lengths to about half that of jets.
The market-dominating ATR and De Havilland Canada (DHC) turboprops use this base efficiency to compete against newer regional jets despite having designs which are 20 years older.
By Bjorn Fehrm
September 28, 2020, © Leeham News: The worldwide COVID-19 pandemic is shaking the air travel and airliner manufacturing industries like no crisis before.
More than 9/11, the oil crisis of 1973 or 2005 or the financial crisis of 2008. The problems for the airlines and the airframe OEMs are on the front pages of the world’s media.
The part of the airliner industry that is not so visible but is perhaps hardest hit, is the engine industry. Its weird business model amplifies the effects of the crisis.
By Kathryn B. Creedy
Third in a Series. Previous articles:
Aug. 31, 2020, (c) Leeham News: European regionals face far greater challenges than Covid and, sadly, much of what is happening to the industry is beyond its control. The result is similar to failures seen in the U.S. Flybe’s recent loss resulted from pre-Covid problems which also led to the pre-Covid failures of such airlines as Flybmi and Cobalt.
The failures illustrate, however, the three reasons why European regionals are so fragile – low-cost competition, geography, and challenging government policy.