rect - retr
- rectangular blade
- rectangular coordinate system
- rectangular element
- rectangular input
- rectangular intake
- rectangular mesh
- rectangular nozzle
- rectangular plot
- rectangular wing
- rectilinear flight
- rectilinear trajectory
- rectilinear vortex
- recursive computation
- recursive formula
- recursive identification
- recursive technique
- redistribution
- redline airspeed
- reduced authority
- reduced equation of motion
- reduced frequency
- reduced Navier-Stokes equations
- reduced order approximation
- reduced order compensator
- reduced order control
- reduced order design
- reduced order model
- reduced parameter
- reduced states
- reduced thrust takeoff
- reduced velocity
- reduced visibility
- reduced-field-length capability
- reduced-fuel trajectory
- reduced-gain system
- reduced-order compensation
- reduced-order controller
- reduced-order observer
- reduction
- reduction factor
