three-blade propeller

three-blade tail rotor

negative thrust propeller / negative-thrust propeller

propeller blade

propeller blade station

suction face of a propeller blade

pressure face of a propeller blade

propeller blade chord

two-blade propeller

blade flat; saber flat; sword flat, flat of the blade / sword

blade de-icers / blade heating elements

blade heating elements / blade de-icers

blade horn / blade lever

blade tip light / main-rotor blade tip light

main-rotor blade tip light blade tip light

three brigades abreast

three-dimensional (3D) point position

3CF (three column format 1. Factor - What; 2. Deduction, Analysis / Implication – Why; 3. Output - So What)

one-(two-, three) dimensional steady flow

three flow turbojet engine

three-dimensional virtual mass moment of inertia

non-retractable three-leg landing gear

three-component balance

three-dimensional element

three-man crew

three-point landing

three-pointer electric indicator

three-pointer inductive indicator

velocity potential equation for three-dimensional gas flow

three-dimensional flow

description of object geometry in three-dimensional space

last three

precision three-site radar