The abbreviation BLD stands for Blade in the military field, especially in the US. You can find more abbreviations starting with BL here. Also take a look at our list with military acronyms.
The Working Part of the Rotor
The blade is the working part of the rotor: it generates the lift of the helicopter and the thrust of the propeller. BLD appears in parts lists, maintenance manuals and technical descriptions of rotary-wing aircraft.
Why Blades Are High Technology
A rotor blade looks simple, but is a masterpiece: composite materials, precise aerodynamics, balancing in fractions of grams. Blade damage has direct effects on flight characteristics – which is why blades are inspected after every flight and maintained with the greatest care.
BLD appears in this meaning constantly in helicopter documentation. Related terms are Blade Fold (B/F) for folding blades on ships and the BLD designation in parts lists – the blade is the heart of every helicopter.
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