Ice Protection System
LDI thermo electric rotor blade de-icing systems are designed for main rotor blades and tail rotor blades for rotorcraft. The systems feature highest durabilaty and efficiency - low electrical power consumption and clean aerodynamics.
LDI ultra light weight heatable polymers may be applied as a thin coating directly on the blade or fully implemented in the composite structure of the blade. The heating systems may also be covered with erosion protection of different kinds.
For replacement purposes of conventional systems LDI offers heater mats with highly improved damage resistance.
Tail Rotor Ice Protection Systems may be fully implemented into the blades
Conventional de-icing boots create an aerodynamically unclean surface on the tail rotor leading edge, resulting in a permanent loss in performance. These disadvantages do not apply to LDI integrated tail rotor de-icing systems. Highly damage tolerant and integrated into the blade structure, our systems guarantee improved airplane performance with lower energy consumption. Icing tunnel tests were done by us to check ice accreation on tail rotors.To analyse the de-ice function of the rotating rotor a special camera technique was used to film the rotating rotors in a way that the blades appear still and the de-ice function can be watched in real time. These tests showed a significant icing problem on tail rotor blades due to rotation speed and angles of attack they are operated. Ice was forming not only on the leading edge where conventoional de-icer pads may be placed – but also over other parts of the blade – resulting in significant performance loss of the tail rotor. Since by the LDI de-icing technology the whole blade can be covered such icing problems outside the leading edges can be avoided due to implementation of the heaters into the blade anywhere without disturbing its aerodynamics.
This allows to build heaters as big as necessary and to cover all parts, which may get iced without any loss of the tail rotors aerodynamic performance.
An LDI Ice Protection Systems may be implemented as an ultra-thin coating layer into or onto the composite or metal structure of a Fenestron without affecting the airplane’s aerodynamical properties or weight and balance.
Icing tunnel tests showed icing problems on Fenestrons where Ice may form in different areas. Since the LDI Ice Protection technology allows the implementation of ultra light heaters anywhere without disturbing aerodynamics all parts, which may get iced may be protected.