- AC
- — Aerodynamic center.
- AOA
- — Angle of attack.
- CD
- — Drag coefficient.
- CD0
- — Parasitic drag coefficient.
- CDi
- — Induced drag coefficient.
- CD_fus
- — The total fuselage drag coefficient.
- CD_HT
- — The total HT drag coefficient.
- CD_misc
- — The total drag coefficient associated with miscellaneous drag sources.
- CD_nac
- — The total nacelle drag coefficient.
- CD_trim
- — The drag coefficient associated with deflected control surfaces required for trimmed flight.
- CD_VT
- — The total VT drag coefficient.
- CD_wing
- — The total wing drag coefficient.
- CD_f
- — Friction drag coefficient.
- CD_form
- — Form drag coefficient. Accounts for pressure drag only.
- CG
- — Center of gravity.
- CL
- — Lift coefficient.
- Cl_max
- — Maximum lift coefficient.
- CMm0
- — Zero-lift pitching moment.
- CRUD
- — Cumulative result of undesired drag. Refers to unforeseen but likely sources of drag.
- dCL/dα
- — Lift-curve slope. The derivative representing the change in lift coefficient with respect to AOA.
- dCMl/dβ
- — The derivative representing the change in rolling moment with respect to sideslip angle.
- dCMm/dα
- — The derivative representing the change in pitching moment with respect to AOA.
- dCMn/dβ
- — The derivative representing the change in yawing moment with respect to sideslip angle.
- dCY/dβ
- — The derivative representing the change in sideforce with respect to sideslip angle.
- ESC
- — Electronic speed controller.
- FWD
- — Forward. Denotes the forward end of the fuselage center section.
- HT
- — Horizontal tail.
- L/D
- — Lift-to-drag ratio.
- LE
- — Leading edge.
- MAC
- — Mean aerodynamic chord. The chord for a rectangular planform wing that would mirror the surface’s aerodynamic properties.
- NP
- — The longitudinal point on the aircraft where all aerodynamic forces act about. This location is measured from the aircraft CG.
- Propwash
- — The stream of sped-up air generated by a propeller wake.
- QC
- — Quarter-chord. The chordwise section of a wing 25% from the leading edge to the trailing edge.
- Re
- — Reynolds number.
- RPM
- — Revolutions per minute.
- SM
- — The MAC normalized distance from the aircraft CG to the aircraft NP.
- STD ATM
- — Refers to the standard atmospheric table that tabulates Earth’s atmospheric properties at varying altitudes.
- VT
- — Vertical tail.
- β
- — Sideslip angle.