Posted on: 08 August 2011 by Mark Howells
Sukhoi Superjet 100 flight prototype SN95005 has begun month-long hot soak trials (above +40°C) at Ras al-Khaimah in the UAE.
The aircraft is equipped with special detecting devices to register the aircraft temperature in different zones. The test programme includes extensive ground testing of the engines, APU and avionics plus check flights.
Ground hot soak trials are aimed at proving the ability of the aircraft, its systems and avionics to resist against temperature shock. These tests have to confirm reliable starting and operation of the APU and engines at high outside air temperature even after long parking. To demonstrate their proper condition the airframe made of composite materials will go through the special checks.
Check flights aim to confirm declared takeoff and landing aircraft performances as well as stable engine operation on steady and variable modes of operation. The test programme also includes the performance of the continued takeoff, single-engine go-around, and relight in flight.