1964_IMPORT_AND_EXPORT_(STRATEGIC_COMMODITIES)_REGULATIONS — Page 50

G 50

CAP. 60]

Import and Export (Strategic Commodities) Regulations

[1988 Ed.

[Subsidiary]

(4) Design technology for protection of avionic and electrical sub-systems against electromagnetic pulse (EMP) and electromagnetic interference (EMI) hazards from sources external to the aircraft, as follows:

(i) Technology for design of shielding systems;

(ii) Technology for the configuration design of hardened electrical circuits and sub-systems;

(iii) Determination of hardening criteria for the above;

(5) Technology for the design, production and reconstruction of adhesively bonded airframe structural members designed to withstand operational temperatures in excess of 120°C (248°F);

Note:

Airframe structural members mentioned in this sub-item do not include engine nacelles and thrust reversers.

(6) Technology for the design and production of propeller blades constructed wholly or partly of composite materials, and specially designed hubs therefor;

Note:

This sub-item does not embargo technology for the production of propeller blades:

(a) Constructed wholly of wood or glass-fibre-reinforced plastics; or

(b) Which are constructed mainly of wood or glass-fibre-reinforced plastics, and which use other materials only in the leading edge or tip.

(7) Technology for the design and production of digital electronic synchrophasers specially designed for propellers; technology for the design of digital electronic controls for propellers; and technology for the production of digital electronic controls for the propellers described in (6) above;

(8) Technology for the design and production of active laminar flow control lifting surfaces;

Note:

Design technology covered by this sub-item includes the data used to substantiate the design approach.

(9) Technology for the development of helicopter multi-axis fly-by-night or fly-by-wire controllers which combine the functions of at least two of the following into one controlling element:

(i) Collective controls;

(ii) Cyclic controls;

(iii) Yaw controls.

(10) Technology for the development of "circulation controlled" anti-torque or directional control systems for helicopters;

Technical Note:

"Circulation-controlled" anti-torque and directional control systems utilise air blown over aerodynamic surfaces to increase or control the forces generated by the surfaces. Buried fan-in-fin anti-torque designs fitted or not fitted with guide vanes such as the "fenestron" are excluded from this category.

(11) Technology for the development of helicopter rotor blades incorporating variable geometry airfoils;

Technical Note:

Variable geometry airfoils utilize trailing edge flaps or tabs, or leading edge slats or pivoted nose droop, which can be controlled in position in flight.

(12) Technology for the development of active control of helicopter blades and other surfaces used to generate aerodynamic forces and moments;

Technical Note:

Active control (of helicopter blades and other surfaces used to generate aerodynamic forces and moments) functions to prevent undesirable helicopter vibrations, structural loads, or helicopter rotor dynamic behaviour by autonomously processing outputs from multiple sensors and then providing necessary preventive commands to effect automatic control.

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