| DAB |
Defence Aquisition Board (US) |
| Dacron |
Covering material for light aircraft; trade name |
| DACT |
Dissimilar air combat training |
| DADC |
Digital air data computer |
| DADS |
Digital air data system |
| DAFCS |
Digital automatic flight control system |
| DARPA |
Defence Advanced Research Projects Agency (US DoD);
re: ARPA |
| databus |
Electronic network for passing digital data
between system processors and aircraft |
| |
sensors |
| dB |
Decibel |
| DBNS |
Doppler bombing/navigation system |
| DBS |
Doppler beam sharpening |
| DC |
Direct current |
| DDI |
Digital display indicator |
| dead-stick landing |
Landing a powered aircraft with all engines
stopped |
| dem/val or
DemVal |
Demonstration/validation |
| derated |
Maximum power of powerplant deliberately set
below maximum possible power |
| DEW |
Distant early warning (US) |
| DF |
Direction finder |
| DFCC |
Digital flight control computer |
| DFCS |
Digital flight control system;
also: digital fire control system |
| DFDR |
Digital flight data recorder |
| DFVLR |
Deutsche Forschungs- und
Versuchsanstalt für Luft- und Raumfahrt;
German |
| |
aviation research establishment |
| DGAC |
Direction Générale a l'Aviation Civile;
French civil aviation authority |
| dibber bomb |
Bomb which penetrates a concrete runway before
exploding |
| dihedral |
Upward wing inclination from root to tip |
| DINAS |
Digital inertial navigation/attack system |
| DINS |
Digital inertial navigation system |
| dirty |
Aircraft configuration with landing gear, flaps,
spoilers etc extended |
| disc loading |
Helicopter (or tilt-rotor) weight divided by
main rotor disc area |
| disposable load |
Total weight which can be loaded and unloaded
(payload, usable fuel, crew) |
| DLC |
Direct lift control |
| DME |
Distance measuring equipment; navigation aid,
measures distance to ground station |
| DMU |
Data management unit;
also:
distance measuring unit |
| DMZ |
Demilitarised zone |
| DoD |
Department of Defence (US) |
| dog-tooth |
Step in leading edge where chord increases;
aka saw-tooth |
| double-slotted flap |
Flap with additional aerofoil ahead of main flap |
| dry lease |
Leasing arrangement between two airlines without
crew or supporting services |
| DTE |
Data transfer equipment |
| DT&E |
Development test & evaluation |
| duty runway |
Designated runway for flying operations at a
specific time |
| DVI |
Direct voice input |
| DZ |
Dropping zone |