Wed, Jun 09, 2010
Sukhoi Superjet 100 Completes Engine Water Protection Test
Russian aviation officials said the Sukhoi Superjet 100 SN95003
has successfully completed the test program aimed at evaluating how
the aircraft will perform on wet runways. The tests confirmed that
APU and engines continue to operate normally while operating on a
wet runway within the full range of pre-takeoff modes, from taxi to
V1. The Russian evaluators say that shows the SSJ 100 is capable of
carrying out safe take-offs and landings on water-covered
runways.
File Photo
The tests were conducted in Zhukovsky-based Sukhoi Civil
Aircraft Company Flight test center. A special 120 foot long pool
was constructed on the runway and filled with water to a depth of
about 1.5 inches. The aircraft accomplished a total of 27 runs at
speed ranging between 10 and 150 knots at different engine
settings. Special attention was paid to low speed modes, take-off
mode and maximum thrust reverser. The tests were monitored by
Russian Certification Authorities. In order to assess the results
the pilots controlled the engines' performance via standard cockpit
indication.
File Photo
Video and still photos were captured using cameras placed at
varying distances from the pool, and mini-cams placed on the
landing gear of the aircraft. It confirmed that the water does not
hit the air intake or the auxiliary power unit. The engines and
aircraft were closely inspected after every run, and no malfunction
of the auxiliary power unit or propulsion system was
registered.
Air data system sensors, air intakes and drain openings in the
airframe sustained normal operation while the aircraft was moving
through the water veil. The stability & control of the aircraft
were evaluated as well. The results of the tests showed that, even
up to 150 knots, the aircraft tracks steadily along the water
covered runway.
File Photo
Russian officials say the tests show that the design
characteristics (location of the engines and, air intakes and drain
openings) of the SSJ100 do not allow water to hit engine air
intakes or the APU through the full range of speeds including runs
with thrust reversers engaged.
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