Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- 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
- Digital twin is a key to JetZero’s hopes for Blended Wing Body entry June 2, 2025
Can Bombardier extend CS300 to a CS500?
By Bjorn Fehrm
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Introduction
April 14, 2016, ©. Leeham Co: Bombardier is working hard to get additional mainline airline customers for its C Series project. The latest discussion is whether Delta Air Lines would replace its fleet of Boeing MD-88s with the C Series.
Figure 1. C Series largest model, CS300. Source: Bombardier.
In this context, it’s also discussed if the largest model, the CS300, Figure 1, is large enough for Delta. This aircraft seats 135 passengers in a two class configuration and up to 160 passengers in an all economy high density version.
The question is whether this is sufficient for Delta and other mainline customers, or if a still larger version is needed in the program, the oft-discussed CS500. We decided to use our proprietary aircraft model to see if a CS500 would be straight forward for Bombardier to develop, should Delta or any other customer ask for a three model C Series program.
Summary
- The C Series aircraft program was developed with the CS300 as the main model. The wing, engine and landing gear were dimensioned with the CS300 in mind.
- The CS100 is a shrink of the CS300, and not vice versa (the CS300 a stretch of the CS100).
- A tentative CS500 stretch if therefore a first stretch of the program’s main model and not a double stretch of a CS100.
- This is evident when one starts to analyze how a CS500 would be designed. There are rather modest changes that need to be done to create an extended model that seat up to 180 passengers.
Alcoa lowers guidance, cites slowing jet sales, production ramp up
April 13, 2016, © Leeham Co.: Alcoa, a major supplier to Airbus and Boeing, lowered its 2016 guidance on anticipated lower demand for aluminum on lower orders for legacy commercial airliners and a slower than expected transition to new airplanes.
In a first quarter earnings call Monday, Alcoa didn’t specify which of the Big Two OEMs it was thinking of, or whether these might have been Bomabrdier and Embraer, for which it also is a supplier. But Sam Pearlstein, the aerospace analyst for Wells Fargo, believes it is Airbus and the A320/A350 programs.
“Alcoa reduced 2016 aerospace global sales growth guidance to 6-8% from 8-9% with large commercial aircraft growth now expected to be about 9% (vs. 15% previous forecast) largely due to lower orders for legacy models and a ”more careful” ramp-up of new models (which we presume means A320NEO and A350),” Pearlstein wrote in a note published yesterday.
Virgin America does have some attractive attributes
March 29, 2016, © Leeham Co.: A report that JetBlue and Alaska Airlines submitted bids to buy Virgin America spurs the thought: this isn’t as wacky as it appears on
Virgin America route map. Click on image to enlarge.
the surface.
When news emerged last week that VA was shopping itself after interest was expressed, many thought, quite naturally, why?
Dan Reed neatly summarizes this argument in his column at Forbes.
Virgin America has few tangible assets. It leases all but about seven of its 10 Airbus A319s and 50 A320s. It’s not dominant in any city or route it serves. The leases are probably, on a relative basis, rather costly.
It has few slots at the few slot-controlled airports it serves (Chicago O’Hare, New York La Guardia and JFK airports and Washington Reagan National Airport), and only a few gates at any given airport—hardly enough to really boost presence of either Alaska or JetBlue.
Why should either airline want Virgin America?
Here’s why.
PW Canada continues next-gen turboprop development despite airplane demand uncertainty
Pratt & Whitney Canada’s next generation turboprop. Source: PWC. Click on image to enlarge.
March 24, 2016, © Leeham Co.: Pratt & Whitney Canada (PWC) continues development of the next generation turboprop engine, even as low oil prices reduce the attractiveness of turboprop airplanes.
Few believe oil prices won’t creep back up over time, once again making prop-jets attractive once again. The ancillary question is what’s next for this type airplane? An entirely new, clean-sheet design? A 90-100 seat turboprop airplane? Or retrofitting this next-gen engine on today’s turboprop airliners?
Summary
- PWC’s new engine could be fitted to a new airplane design or retrofitted to today’s Bombardier Q400 and ATR series airplanes.
- The 20-year market is small.
- The 20-year market for a 90-seat turboprop is smaller still.
- Embraer is evaluating whether to reenter the turboprop market, 15 years after the last mass-produced Brasilia rolled off the assembly line.
- GE is developing a turboprop engine and at least three countries have interest in this sector.
IRKUT MC-21 analysis, Part 4. Performance with PD-14
By Bjorn Fehrm
Subscription required.
Introduction
March. 14, 2016, ©. Leeham Co: In three articles we have been looking at the new Russian single aisle aircraft, Irkut MC-21, from United Aircraft and the new Russian engine that is being developed for the aircraft, the PD-14.
The PD-14, which is offered as an alternative to the base engine for the aircraft, the Pratt & Whtiney PW1400G, was analysed in our Part 3 article. We now mount the engine on the MC-21 and explore the difference in performance compared to the base engine.
Summary:
- The PD-14, which is a new engine designed by the Aviadvigatel company, is a clear step forward for the Russian turbofan industry.
- In our analysis in Part 3, we could see that it has a classical direct drive construction with a good level of technology in several parts.
- Weight and installation dimension are similar to the competition but efficiency is a bit behind.
- We now explore the performance of the MC-21 with the Russian engine.
MOMentum appears to be slowing for new Boeing airplane
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Introduction
Model design and paint by Camil Valiquette. Photo via Google.
March 10, 2016, © Leeham Co.: MOMentum for the Middle of the Market aircraft seems to be slowing from last year, as potential buyers and Boeing struggle to define an aircraft that would be affordable to build, affordable to buy and fulfill different mission requirements for capacity or range.
Meantime, Airbus is content to watch Boeing’s predicament, secure in what it believes is the winning strategy.
Summary
- Attendees at the ISTAT conference last week had no consensus about what the airplane should be, when or even if Boeing should launch the airplane.
- Some customers want range, others want capacity.
- “757 replacement?” Not really.
PW’s Geared Turbo Fan was catalyst for MRJ90 order
March 8, 2016, © Leeham Co.: Pratt & Whitney’s Geared Turbo Fan technology was what prompted a used airplane lessor to place its first new airplane order,
Pratt & Whitney’s Geared Turbo Fan was the key reason lessor Aerolease decided to order the MRJ90. Photo via Google images.
selecting the Mitsubishi MRJ90 in the process.
Jep Thornton is a partner with the small lessor Aerolease, a 20-year old company that has up to now concentrated on acquiring McDonnell Douglas DC-8s, Airbus A300s and Boeing 757s for conversion to cargo aircraft. Aerolease has about 40 aircraft under management and ownership.
Thornton and Mitsubishi announced at the Singapore Air Show last month a Letter of Intent to order for 10 MRJ90s and options for 10 more. Deliveries begin in three years.
Bjorn’s Corner: Engine architectures
4 March 2016, ©. Leeham Co: There is a saying, “There’s more than one way to skin a cat.” The same goes for making successful Turbofans to commercial aircraft.
At the recent Pacific Northwest Aerospace Alliance 2016 sub-supplier conference in Seattle, GE, Rolls-Royce and Pratt & Whitney all talked about their latest engine projects and the technology development that was critical to their success.
The engines they talked about, the GE9x, Rolls-Royce Advance and Pratt & Whitney’s Geared Turbofan, can all be characterised as the best of breed for their intended use but they could not be more different in how their level of excellence is achieved.
It made for interesting listening. Here’s the gist of what was told.