By Bjorn Fehrm
January 03, 2018, ©. Leeham Co: Both United Aircraft Corporation (UAC) and COMAC got their single-aisle airliner projects into flight test during 2017. The MC-21 and C919 had their first flights within less than a month of each other, with the Chinese C919 first at 5th of May, followed by the Irkut MC-21 on the 28th of May.
Superficially the aircraft and projects are similar. Both are 150-220 seat single aisle projects in the mold of Airbus’ A320neo and Boeing’s 737 MAX programs. Looking a bit closer, they are different. One is extending the state of the art in several areas; the other is playing safe.
Oct. 27, 2017, © Leeham Co.: The US is considering new trade sanctions against Russia, and Russia is considering retaliatory sanctions, that could have major implications in US aerospace—including on Boeing.
The US sanctions would be for meddling in the US presidential election in 2016 and for activities in Eastern Europe. The Russian sanctions are a tit-for-tat retaliation if the US sanctions are adopted.
Among the Russian companies that may be targeted:
By Bjorn Fehrm
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June 15, 2017, ©. Leeham Co: We continued the comparison of Irkut’s MC-21 and COMAC’s C919 last week with an analysis of the cabins and systems. The week before, we compared project time plans, structures and aerodynamics.
Now we finish with an analysis of the economics of the aircraft.
By Bjorn Fehrm
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Introduction
June 08, 2017, ©. Leeham Co: We started the comparison of Irkut’s MC-21 and COMAC’s C919 last week. We compared project time plans, structures and aerodynamics.
Now we continue with the comparison of cabin capacities and systems.
Summary:
By Bjorn Fehrm
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Note: With the first flight of the Irkut MC-21 in the weekend, we move the Qantas Ultra Long Haul article Part 2 to a later date.
June 01, 2017, ©. Leeham Co: Irkut’s MC-21 and COMAC’s C919 both completed their first flights during last month. Both are new competitors in the market’s hottest segment, that for 150 to 240 seats.
They both challenge the present rulers: Airbus’ A320 and Boeing’s 737 MAX. We made first analysis of the aircraft against their Western competition here, here and here.
We now dig deeper with a direct comparison between the MC-21 and C919 projects.
Summary:
May 15, 2017, © Leeham Co.: It was a busy news week last week.
Let’s look at these events.
By Bjorn Fehrm
April 19, 2017, ©. Leeham Co: In our second article about Aeroflot, the Soviet Union flag carrier that transformed to a modern airline, we will cover the period from the fall of the Soviet Union until 2010.
This was the difficult period for all participants. The old structures no longer existed and were replaced with… nothing, followed by uncertainty and a long struggle to get back to normal.
By Bjorn Fehrm
April 05, 2017, ©. Leeham Co: United Aircraft’s IRKUT MC-21 passed 90% of the static Ultimate load test end February at the TsAGI test institute in Moscow, reports ATO.RU. But the aircraft failed the 100% test.
The test simulates a load which is 150% higher than the highest load that the aircraft should be subject to in its operational life. The test failure does not stop the aircraft from beginning flight testing, for that the aircraft needs to pass the limit load test (highest load during flight), which it has.Missing the Ultimate load test for new airliners is nothing unusual. The designers tries to pass this test with the smallest possible margin. Any excess margin will make the aircraft unnecessary heavy. Other aircraft to have missed the test are Mitsubishi Aircraft’s MRJ, Airbus’ A380 and Boeing’s 787.
According to ATO.RU, who quotes IRKUT, the reinforcements in the wingbox necessitated by the failure will weigh 25kg. It’s not clear if the changes will affect the start of test flights. These should have started during April.