Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p251
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 714537–717359

and bypass flow in a gas turbine engine.
9. E. 003. b. "Technology" "required" for the "development" or "production" of any of the following:
1. Wind tunnel aero‑models equipped with non‑intrusive sensors capable of transmitting data from the sensors to the data acquisition system; or
2. "Composite" propeller blades or propfans, capable of absorbing more than 2,000 kW at flight speeds exceeding Mach 0.55;
9. E. 003. c. "Technology" "required" for manufacturing cooling holes in gas turbine engine components incorporating any of the "technologies" specified by 9E003.a.1., 9E003.a.2. or 9E003.a.5., and having any of the following:
1. Having all of the following:
a. Minimum 'cross‑sectional area' less than 0.45 mm2;
b. 'Hole shape ratio' greater than 4.52; and
c. 'Incidence angle' equal to or less than 25°; or
2. Having all of the following:
a. Minimum 'cross‑sectional area' less than 0.12 mm2;
b. 'Hole shape ratio' greater than 5.65; and
c. 'Incidence angle' more than 25°;
Note: 9E003.c. does not apply to "technology" for manufacturing constant radius cylindrical holes that are straight through and enter and exit on the external surfaces of the component.
Technical Notes:
1. For the purposes of 9E003.c., the 'cross‑sectional area' is the area of the hole in the plane perpendicular to the hole axis.
2. For the purposes of 9E003.c., 'hole shape ratio' is the nominal length of the axis of the hole divided by the square root of its minimum 'cross‑sectional area'.
3. For the purposes of 9E003.c., 'incidence angle' is the acute angle measured between the plane tangential to the aerofoil surface and the hole axis at the point where the hole axis enters the aerofoil surface.
4. For the purposes of 9E003.c., methods for manufacturing holes include "laser" beam machining, water jet machining, Electro-Chemical Machining (ECM) or Electrical Discharge Machining (EDM).
9. E. 003. d. "Technology" "required" for the "development" or "production" of helicopter power transfer systems or tilt rotor or tilt wing "aircraft" power transfer systems;
9. E. 003. e. "Technology" for the "development" or "production" of reciprocating diesel engine ground vehicle propulsion systems having all of the following:
1. 'Box volume' of 1.2 m3 or less;
2. An overall power output of more than 750 kW based on 80/1269/EEC, ISO 2534 or national equivalents; and
3. Power density of more than 700 kW/m3 of 'box volume';
Technical Note:
For the purposes of 9E003.e., 'box volume' in 9E003.e. is the product of three perpendicular dimensions measured in the following way:
                  Length: The length of the crankshaft from front flange to flywheel face;
Width: The widest of any of the following:
a. The outside dimension from valve cover to valve cover;
b. The dimensions of the outside edges of the cylinder heads;