BEHIND THE SYSTEMS

What makes a drone useful?

Understand the enabling technologies, then follow how they develop.

9 entries

In-depth explainer

MQ-9 Reaper in flight against a clear blue sky

Energy, endurance and useful time on task

Understand energy and power, payload trade-offs and turnaround, using simple worked arithmetic and real aircraft configuration examples.

Reviewed 23 Sept 20264 min read

In-depth explainer

Sea Hunter unmanned trimaran arriving at Pearl Harbor with its sensor mast above the central hull

How surface and underwater drones work

Compare USVs, AUVs and ROVs, their supervision and data flows, and the launch, recovery and support that make maritime autonomy practical.

Reviewed 23 Sept 20264 min read

In-depth explainer

U.S. Navy personnel preparing a cylindrical underwater vehicle for launch from a dock in Corpus Christi

Reliability, maintenance and the real cost of a drone

Look beyond the purchase price to useful output, availability, repairability and software support, with a worked lifetime-cost comparison.

Reviewed 23 Sept 20265 min read

In-depth explainer

Airworthiness and airspace integration

A practical explanation of design assurance, aircraft condition, detect and avoid, and operating permission, illustrated by the Protector transit.

Reviewed 23 Sept 20264 min read

In-depth explainer

RQ-21A Blackjack rising from a mobile launcher beneath a cloudy sky

Drone communications: control, data and reliability

Distinguish capacity, delay, availability and security. Explore how airborne and underwater systems deliver useful information to people.

Reviewed 23 Sept 20264 min read

In-depth explainer

XQ-58A Valkyrie experimental UAV flying alongside an F-16

Mission autonomy and human–machine teaming

Understand the functions software can perform, the work people retain, and what credible demonstrations reveal about supervision and coordination.

Reviewed 23 Sept 20264 min read

In-depth explainer

Modular drones and mission payloads

Why physical fit is only the beginning: power, data, software, operator procedures and support determine whether a new payload is useful.

Reviewed 23 Sept 20264 min read

In-depth explainer

Yellow Spot quadruped robot carrying a sensor head during a demonstration inside a Pearl Harbor shipyard building

Navigation beyond satellite signals

How GNSS, inertial sensors and visual references contribute to a position estimate—and why uncertainty matters as much as the route.

Reviewed 23 Sept 20264 min read

In-depth explainer

Sensors and sensor fusion: from observation to understanding

How cameras, thermal imaging, radar and sonar produce different evidence, with examples of integration, uncertainty and misleading comparisons.

Reviewed 23 Sept 20264 min read

Decode the terminology

UGV: Uncrewed ground vehicle.
USV: Uncrewed surface vessel.
UUV: Uncrewed underwater vehicle: an umbrella term.
AUV: Autonomous underwater vehicle, operating without a tether.
ROV: Remotely operated underwater vehicle, commonly controlled through a tether.
UAV: Uncrewed aerial vehicle: the aircraft itself.
UAS: Uncrewed aircraft system: aircraft, control, communications and support elements.
ISR: Intelligence, surveillance and reconnaissance.
RPAS: Remotely piloted aircraft system.
MALE: Medium altitude, long endurance.
HALE: High altitude, long endurance.
VTOL: Vertical take-off and landing.
STOL: Short take-off and landing.
EO/IR: Electro-optical and infrared sensors.
GNSS: Global navigation satellite system, such as GPS.
CCA: Collaborative combat aircraft.
C-UAS: Counter-uncrewed aircraft systems.
EW: Electronic warfare.
FPV: First-person view: a camera view from the aircraft.
IOC: Initial operational capability: a programme milestone.
CDR: Critical design review: a development milestone.

Read beyond the headline.

Compare named configurations and documented evidence. Endurance depends on payload and conditions; an order, a first trial and operational use establish different things. The support system matters alongside the vehicle.