07 August 2015, ©. Leeham Co: Now that we have explained the range consequences of weight and fuel limited airplane operations, we might as well explain the last important part of the range of an airliner: Why the practical range is always shorter than what the OEM says.
When an airliner OEM gives the design or brochure maximum range of an aircraft, they do that with an aircraft in a “show-room” configuration and which is loaded with a filled cabin only; no cargo is included in the calculation. Further, in the cargo area, there is only bulk-loaded passenger bags. Container loading of the bags would have cost tare weight for the containers used and weight is to be avoided when stipulating the maximum design range.
In practice, we would have to consider tare weight for bags containers and possible cargo when discussing what practical range an airline can plan for a certain aircraft model. But this is far from the whole story. Here is what has to be considered in addition.
July 30, 2015: Scott Fancher, regarded as the person to come in and take over troubled programs at Boeing, has been named to take over the KC-46A program.
Scott Fancher. Source: Boeing.
Fancher originally came to Boeing Commercial Airplanes from the Boeing defense unit to take over the 787 program at a time when development and design issues were rampant and the plane had yet to be delivered to a single customer.
After that was straightened out, Fancher took over new airplane programs and then moved to oversee development of the 777X, which is Boeing’s response to the Airbus A350 XWB. Although the 777X is a derivative, Boeing’s 747-8 derivative was two years late (in no small part due to the knock-on effects of the 787 program problems). Fancher’s charge with 777X was to be sure it comes in on time and on budget.
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Introduction
July 28, 2015: © Leeham Co. Trying to decipher what the airframe Original Equipment Manufacturers (OEMs) are going to do is a sporty game that is often analogous to Kremlin watching, especially when it comes to Airbus and Boeing.
The OEMs are naturally circumspect about most everything they do: product development, aircraft pricing, sales campaigns, etc.
They also often are like lawyers when it comes to promoting their products in the public domain: cherry-pick the data that supports your product and which puts your competitor’s product in the worst possible light.
Aerospace analysts, consultants and media (as well as the enthusiast) look anywhere and everywhere for information to discern what the OEMs are up to or how the airplanes are performing or whatever the soup de jour is.
There is more information in the public domain than you would think.
July 25, 2015: This is a 45 minute Air Crash Investigation episode about the Qantas Airway Flight 32 Airbus A380 engine failure and the subsequent events. Aside from the interesting circumstances, this demonstrates Cockpit Resource Management. What especially caught our eye was at the end, when the Captain made comment of automation vs human crews. With discussion from time-to-time about having one pilot, no pilots or someone on the ground controlling the airplane (as with a drone), this is why we like having real people in the cockpit. Qantas 32 is a good example of of how pilots on the scene vs human monitoring on the ground is the much better way.
https://youtu.be/vbDqpD80_u0
17 July 2015, ©. Leeham Co: It is summer in south of Europe and we have had over 30°C/86°F for weeks. It makes one realize the conditions where the engines have to work over their flat rating point in the Middle East.
Aircraft engines are a bit fidgety. They don’t like temperature although they are made to sustain that their hottest parts, the nozzle and first turbine after the combustor, gets scalded to 1700°C/3,092°F or more.
Go down to the very back end of the engine and we come to where the key engine parameter, EGT (Exhaust Gas Temperature), is measured. It determines a lot of things, among them the time the engine stays on wing. Things are typically 700°C/1,832°F cooler here and this is where a reliable temperature measurement probe can be placed. Based on its values, the total health of the engine’s core is determined. It is also a key input whether the engine shall be throttled back in a hot take-off like in the Middle East.
We believe Airbus is close to launching an “A350-900LR” (Long Range) in response to talks with Singapore Airlines for a longer-range airplane.
July 14, 2015 © Leeham Co. Singapore Airlines is in talks with Airbus and Boeing about an Ultra-Long Haul airplane that can fly from Singapore to the US non-stop.
The talks were first reported by Bloomberg News June 17, during the Paris Air Show.
Singapore discontinued the flights to Los Angeles and Newark when rising fuel prices made operation of the Airbus A340-500 used on the trips uneconomic.
Boeing currently has one airplane capable of service to Los Angeles, the current generation 777-200LR, which has a standard range of 8,665nm but not to Newark which is 8,300nm great-circle without the unpopular Additional Cargo-bay Tanks (ACT), any wind or longer range alternate would exceed the capabilities of 777-200LR in standard config. Los Angeles is 7,560nm from Singapore and when flying west the extra range in the standard 777-200LR would be needed to combat the prevailing westerly winds on the mission.
The Airbus A350-900 has a range of 7,900nm when transporting the same 301 passengers as 777-200LR. Boeing’s forthcoming 777-8X has a planned range of 9,300nm but it’s entry-into-service isn’t planned until around 2022.
Update, July 8: In our original post, we omitted 44 Boeing 737NGs from the YTD firm orders. The charts and text have been updated to reflect this information.
July 7, 2015, © Leeham Co. Airbus pulled ahead of Boeing in firm orders through June, and both companies have a number of commitments that were announced at the Paris Air Show that aren’t included in the year-to-date tally.
Airbus leads with single-aisle orders and Boeing leads with widebody orders, but at the half-way point of the year, the contest is far from over. The leads could shift or increase, depending on how the balance of the year goes.
June 23, 2015, © Leeham Co. The Memorandum for Understanding for expansion of the Boeing 747-8F fleet of Volga-Dnepr announced at the Paris Air Show is somewhat less than met the eye at the time.
Despite a few orders subsequent to this chart’s creation in January 2015, the 747-8 production gap is insurmountable. The Paris Air Show announcement of Volga-Dnepr fleet “expansion” by 20 747-8Fs is more about options than firm orders, according to market intelligence, which does nothing to fill the gap unless exercised. The expansion is over seven years, which also fails to fill the gap at current production rates. Click on image to enlarge.
Although Boeing said the 20 airplanes will be added through a mix of direct purchases and leases over seven years, it didn’t indicate how many firm orders, options and leases were involved nor the delivery timeline. Market Intelligence indicates perhaps two of the 20 are white tails, aircraft that were built without customers. If correct, this won’t add to the backlog or production stream. Neither would options, unless exercised. Market Intelligence also indicates that firm orders are in the mid-single digits, which if correct is a far cry from what Boeing needs to fill the production gap
Some media and aerospace analysts concluded this deal meant 20 firm orders equal to a year-and-a-half worth of work for the struggling 747-8 production line, but Boeing said the fleet “expansion” is streaming the deliveries over seven years. If evenly spread, adds up to three aircraft in the production stream if all were new orders and not white tails, and options were converted to orders. Even this interpretation fails to fill the production gap.
A Boeing spokesperson said, “We are in discussion with Volga-Dnepr Group and will provide details when ready. There is nothing else we can add here.”
Accordingly, we expect Boeing to announce a reduction in the 747-8 production rate sooner than later. The current rate is 18/yr, declining to 16/yr from September. Boeing previously said it can still make money at 12/yr, so we expect the rate to be reduced to at least this level. However, as the chart shows, the current firm order backlog doesn’t support even this reduced rate.
The USAF indicated it wants to receive the first of two replacements for Air Force One in 2018.
What raised questions over the solidity of the Volga announcement was the way Boeing worded the press release last week at the PAS. All other press releases were specific about orders and options, except the Volga release, which contained highly unusual wording, a departure from Boeing’s standard boiler-plate. Excerpts of these releases are below the page break. We made inquiries in the market, and the results are outlined above.