Since its first successful flight on April 7, 2010, the Solar Impulse HB-SIA has completed 8 tests flights. These have enabled us to optimize the aircraft and allowed the pilots to familiarize themselves with its flight behaviour and confirm its aerodynamic performance. The aircraft is now ready to enter into a new test phase. The objective is an ambitious one: to demonstrate that it is possible to fly day and night with an aircraft only propelled by solar energy and in this way come close to the notion of perpetual flight.
Two particularly difficult missions lie ahead for attaining this objective.
- the first night flight ever by a solar aircraft
- the first ever complete cycle flight to validate the possibility of long-duration flights without any fuel