SOFTLAND
External Airbag System for Increasing the Small Aircraft Safety during Emergency Landing
Adaptronica was the leader of the consortium, which carries out an international research project within the framework of the European Program Eurostars 2, through the National Center for Research and Development in Poland. Project title: “SOFTLAND – Airbag system for increasing the small aircraft safety during emergency landing”, E113407.
Partner: Zall Jihlavan Airplanes s.r.o. , Czech Republic
Partner: Zall Jihlavan Airplanes s.r.o. , Czech Republic
Project assumptions:
- an external airbag used together with a parachute
- velocity reduction from 7.5 m/s (only parachute) to 2.5 m/s
- acceleration reduction to 5 g
- small weight
- short unfolding time
- no collision with the landing gear
- possible installation in airplanes in use
Experimental stand:
- dimensions: 4 x 9 m
- load capacity: 1200 kg
- measurements:
- accelerations
- pressure in the airbag
- fast camera (dispalcement & velocity)
Experimental model - ironbird
- mass: 350 - 600 kg
- moments of inertia and geometry of the
bottom part like in the Skyleader 600
Main results:
Reduction of velocity to 2.5 m/s reduction of acceleration to 5 gFirst flight test
Tested:initiation via the parachute: | + |
rejection of the cover: | + |
correct shape: | + |
opening time: | + |
energy dissipation: | + / - |
The flight test needs to be repeated due to the aircraft's unexpected position after release from the helicopter.
Upscaling of the system for a 1200 kg helicopter
From prototype to market:
- account for horizontal velocity at touchdown
- more flight tests in various conditions
- better integration with the airplane e.g. external cover
- certification of the whole system