Aerospace technology demands ever-higher standards for aircraft performance
safety
and intelligence. Traditional rigid sensors struggle to achieve real-time
in-situ measurement of multifunctional and large-scale sensory signals
and the extensive deployment of discrete rigid sensors has a non-negligible impact on the aircraft’s structure and its surface flow field. The advent of flexible electronics offers a new opportunity to overcome the bottlenecks of conventional sensing technology. Its inherent characteristics— such as being flexible and conformable— have fostered the development of new concepts like the “SensorCraft”. The core principle involves deploying large-scale
distributed sensor networks across the aircraft’s surface and within its structure for real-time
multi-modal perception of both the aircraft’s state and the external environment. This review systematically covers the key principles and representative device/system designs of flexible electronics for sensing surface flow characteristics (e.g.
pressure
shear stress
airflow) and for perceiving aerodynamic forces and thermal conditions (e.g.
strain
temperature). It also discusses the applications of flexible electronic skin in active actuation domains
including drag reduction
anti-/de-icing
and electromagnetic control. Combined with the burgeoning field of artificial intelligence
the functionality and intelligence of flexible electronic skins can be further expanded. Finally
the paper provides an outlook on the main challenges and future directions in this field
aiming to promote the development of embodied intelligence for SensorCraft.