This year’s Paris Air Show marked the official debut of the Mitsubishi Regional Jet. While at the show, we spoke with MRJ program test pilots Captain Martin Trout and Captain Yoshiyuki Yasumura inside the flight deck and cabin of the MRJ as they shared details about the aircraft’s flying experience, performance attributes and benefits to airline customers.
On Monday June 19, CNN Aviation editor and self-proclaimed AvGeek, Jon Ostrower reported on the debut of the Mitsubishi Regional Jet at the Paris Air Show. In the 90-second CNN Money segment and accompanying story titled “Sharp-nosed Japanese jetliner could be game changer for U.S. flyers.”
The Mitsubishi Regional Jet touched down in France 5:05pm local time Thursday June 15 at Le Bourget Airport for the 52nd Paris Air Show. As part of the preparations for this landmark air show, we went through the meticulous process of painting the All Nippon Airways livery on the MRJ’s third flight test aircraft debuting at the air show this week. ANA, one of the largest airlines in Japan, is the MRJ’s first customer and has placed orders for 15 MRJs.
During the flight load survey tests, more than 250 pressure sensors and strain gauges affixed to the aircraft measured the maximum loads on its external surfaces and components. Throughout the test flights, the crew maneuvered the aircraft to reach specified G-loads, maximum rudder deflection, and roll and side slip thresholds as our engineers monitored the data and Japanese aviation authorities witnessed and approved the test via the telemetry room.
At McKinley Climatic Laboratory on Eglin Air Force Base in Florida, FTA-4 underwent extreme temperature tests between February 28 and March 17, 2017. After initial set up, temperatures sunk down to -40° C for five full days of extreme cold testing. Following this, the testing team removed their winter coats and swapped in their t-shirts, and ratcheted the heat up to 50° C for several more test days. Among other systems, the test and data gathered is used to validate the performance of the Environmental Control System (ECS). “Pull-Up” and “Pull-Down” tests, which begin in a cold or hot soaked condition, measured the ability of the system to control the cabin and flight deck to a comfortable temperature within a specified time.
Flying the aircraft at varying altitudes and speeds beyond maximum operation limits, the high-speed flutter test demonstrated sufficient margin on the normal operating envelope of the MRJ. Testing for flutter – a phenomenon that occurs when aerodynamic forces cause rapid self-excited destructive vibration – required a heavily instrumented aircraft operated by well-trained crew that was monitored by engineering specialists on the ground.
In February and March 2017, Flight Test Aircraft 4 (FTA-4) performed initial natural icing tests based out of the Rockford International Airport in Illinois. This was the first off-site test campaign to collect data in these conditions.
Tests performed by a team of global specialists using dedicated flight test instrumentation obtained valuable data to analyze the airframe ice accretion and Ice Protection Systems performance. Guided by a meteorologist on the ground, FTA-4 flew through clouds with specific moisture content, water droplet size and temperature resulting in varied icing conditions to understand how the aircraft would perform and eliminate ice on the leading edge of the wings and engines during flight.
As a prerequisite to the type certification lightning test later this year, we completed an internal simulated lightning strike assessment on Flight Test Aircraft 5 (FTA-5) in December 2016 in Nagoya, Japan. To simulate lightning strikes, we applied a low electrical current to the aircraft, which produces a magnetic field around certain areas of the aircraft, such as the ports, engines and the edges of the empennage on the tail.
Required for all new clean-sheet design aircraft, the Full-Scale Static Strength Test ensures the aircraft’s ability to meet structural strength safety standards and comprises testing of the wings, vertical stabilizer and fuselage. The test rig, a system of hydraulic actuators positioned to distribute force across the airframe simulating operating loads, was designed and manufactured by Mitsubishi Heavy Industries at a facility near the Nagoya Airfield in the Aichi Prefecture, Japan.
To set a new benchmark in regional aviation, Mitsubishi has assembled a global team of top aviation engineers paired with Japanese manufacturing experts.
It takes more than a single pilot to get an aircraft off the ground. Behind every take-off and landing is a team of aviation engineers, flight testing experts and strategists developing the aircraft of tomorrow. With more than 130 years of experience building transportation systems, defense aircraft, advanced rocketry and components for commercial aviation, Mitsubishi Heavy Industries (MHI) understands the challenge of developing an entirely new aircraft, the Mitsubishi Regional Jet, for a demanding market.