ScanEagle Drone Specs: 18-Hour Endurance and FLARES Launch
Insitu publishes an 18-hour endurance rating, a 62-pound maximum takeoff weight, and a 17-pound payload capacity for the ScanEagle unmanned aircraft system. Because the airframe lacks conventional landing gear, every flight begins on a rail launcher or the FLARES vertical-lift kit and ends on a suspended retrieval line.
What Insitu Publishes for the ScanEagle
The ScanEagle drone delivers up to 18 hours of continuous flight endurance while carrying a 17-pound (8-kilogram) modular sensor payload. Insitu positions the airframe as the platform that invented the agile intelligence, surveillance, and reconnaissance (ISR) category. Key operational parameters published on Insitu's published ScanEagle specifications include a maximum takeoff weight (MTOW) of 62 pounds (28 kilograms), an operational service ceiling of 19,500 feet (5,950 meters), and a maximum horizontal airspeed of 80 knots (41.2 meters per second).
The aircraft measures 5.6 feet (1.71 meters) in total fuselage length and features a wingspan of 10.2 feet (3.1 meters). Having no wheeled landing gear or skids, the airframe relies entirely on specialized ground hardware for mission initiation and retrieval. Sorties require either a rail launcher or the FLARES vertical take-off and landing kit. Recovery uses a vertical arresting line that engages a hook mounted on the aircraft's wing.
To understand how this airframe compares to larger fixed-wing platforms across defense fleets, examine our overview of fixed-wing drones.
ScanEagle Drone Specifications and Performance Benchmarks
The primary performance specifications published by Insitu define a tactical unmanned aerial system (UAS) with an 18-hour endurance rating. The propulsion core operates on heavy fuels such as JP-5 or JP-8, as well as a C-10 gasoline engine.
Payload electrical draw remains capped at 150 watts of continuous bus power. Communications architecture supports both line-of-sight encrypted radio links and Proliferated Low-Earth Orbit (PLEO) satellite constellations for extended operations beyond visual range.
For additional context on how tactical designs contrast with multirotor aerial systems, consult our detailed comparison of fixed-wing vs multirotor drones.
| Specification | Published figure |
|---|---|
| Fuselage Length | 5.6 ft (1.71 m) |
| Wingspan | 10.2 ft (3.1 m) |
| Maximum Takeoff Weight (MTOW) | 62 lb (28 kg) |
| Maximum Payload Weight | 17 lb (8 kg) |
| Payload Bus Power | Up to 150 W |
| Operational Endurance | 18 hours (Insitu also publishes "18+ hours of endurance carrying 17 lbs") |
| Operating Service Ceiling | 19,500 ft (5,950 m) |
| Maximum Horizontal Speed | 80 knots (41.2 m/s) |
| Engine Type and Fuel Options | Heavy fuel (JP-5 or JP-8) or C-10 gasoline engine |
| Satellite Communications (SATCOM) | Proliferated Low-Earth Orbit (PLEO) constellation C2 |
| Published Unit Price | Unpublished by manufacturer |
Launch and Recovery Without a Runway
Runway independence on the ScanEagle drone relies on two distinct deployment mechanisms. The traditional method uses a rail launcher to launch the 62-pound aircraft. Standard recovery uses the SkyHook system, catching the aircraft's wing hook on a vertical line.
The alternate deployment configuration uses the FLARES vertical take-off and landing kit to launch the aircraft vertically without modifying the base airframe. During a FLARES launch, FLARES climbs vertically with the mated ScanEagle to 500 feet above ground level, dashes into the wind, and releases the aircraft into fixed-wing flight in under 5 minutes before returning to the launch point. If a launch is aborted, FLARES returns and lands vertically with ScanEagle still attached.
Recovery with the FLARES assembly operates in reverse using the Mast Augmented Recovery System (MARS). Tethered FLARES hoists the capture rope to roughly 300 feet, allowing the incoming ScanEagle to catch the line via its wing hook in under 5 minutes. FLARES then descends as the capture rope is wheeled onto the winch in MARS and ScanEagle settles onto the mast before the unloaded FLARES lands.
Expeditionary Footprint and Crew Setup Requirements
Operating the ScanEagle drone in remote environments demands attention to transport volume and environmental limits. A complete mission set with the FLARES system packs into a single standard 463L cargo pallet measuring 108 inches long, 88 inches wide, and 62 inches high (2.74 by 2.24 by 1.57 meters). Insitu states that a trained crew of two operators can set up the equipment and achieve launch readiness within 30 minutes.
The operational flight envelope covers ambient surface temperatures ranging from -20 degrees Celsius to +45 degrees Celsius. The launch and retrieval systems function in winds between 0 and 30 knots, with 10 knot gusts.
For maritime applications, the small physical footprint of the FLARES package enables flight operations from compact ship decks in choppy waters. Insitu advertises the gear as hardened for heavy seas, steep vessel roll, and tight flight decks. Readers evaluating maritime aviation can read how naval forces approached shipboard unmanned flight on our analysis of the MQ-8 Fire Scout.
Sensors, Datalinks, and Over-the-Horizon Command
Sensors available for the ScanEagle drone cover day and night intelligence collection across land and maritime environments. Operators can install electro-optical (EO) cameras and telescopes, medium-wave infrared and EO sensors, synthetic aperture radar (SAR) with MMTI, and AIS maritime vessel identification. Target marking options include laser rangefinders, laser pointers, and tactical laser designators.
Accommodating these instruments requires staying within strict payload limitations. Because the onboard electrical system supplies a maximum of 150 watts and carries no more than 17 pounds of payload, crews must configure mission gear selectively rather than mounting every sensor package at once. Ground control relies on Insitu's Common Ground Control Station running INEXA Control software, which enables one operator to supervise multiple airframes.
Command links include line-of-sight digital encrypted or analog video channels paired with protected radio control uplinks. When missions extend beyond terrestrial radio horizons, the aircraft connects to Proliferated Low-Earth Orbit satellite constellations.
Navigation Resilience in GPS-Contested Airspace
Insitu reports that the ScanEagle has been operating in GPS-contested and GPS-denied environments since 2018. To keep flying when satellite positioning drops offline, the aircraft uses visual-based navigation and alternate onboard navigation algorithms.
The radio systems include adaptive frequency switching to counter intentional RF interference on control bands. For automated airspace safety, the software incorporates detect and avoid (DAA) capabilities alongside weather avoidance.
Insitu publishes those electronic-warfare statements; no independent flight-test results are available.
Fleet Placement and Conflicting Manufacturer Flight Hours
Evaluating the ScanEagle drone requires examining how it fits against larger hardware in the manufacturer's lineup. The larger Integrator airframe provides a maximum takeoff weight of 175 pounds (79 kilograms) and carries up to 50 pounds (23 kilograms) of sensors powered by a 500-watt electrical supply. The Integrator reaches up to 27.5 hours of endurance and set a company record with a 25.5-hour operational mission, offering a substantial step up from ScanEagle's 150-watt and 17-pound ceilings.
A detailed review of Insitu collateral shows internal discrepancies regarding total operational flight hours across its fleet. On the official ScanEagle product page, Insitu claims over 1.6 million combat flight hours for the airframe alone. On the general products overview page, the company states its suite of platforms is backed by 1.4 million hours of real-world operational experience. On Insitu's own RQ-21A product page, the manufacturer states its systems are backed by more than 1.6 million operational hours; our RQ-21A Blackjack page covers that aircraft.
These three figures use inconsistent denominators and cannot describe the exact same operational metric. For an analysis of parent company structure and corporate holdings, see our Insitu company profile.
The ScanEagle Procurement and Unit Cost Question
Insitu publishes no public flyaway cost or package list price for the ScanEagle drone. Because the company does not release fixed pricing tables, calculating a standard per-aircraft price from open manufacturer literature is impossible.
To see how military aircraft pricing models function in practice, review our breakdown of military drone cost structures.
If you are assessing the ScanEagle against competing tactical surveillance airframes, compare the published 18-hour endurance and 150-watt payload power ceiling directly against your mission sensor requirements. For broader classification criteria, review our taxonomy of types of military drones to identify systems matching your operational profile.
Drones and UAS FAQs
How long can a ScanEagle stay in the air?
Insitu publishes an operational endurance of up to 18 hours for the ScanEagle drone. The manufacturer also notes that the airframe can achieve 18+ hours while carrying 17 pounds of payload.
How does the ScanEagle land without a runway?
The ScanEagle recovers without landing gear using a vertical arresting line. In standard operations, the aircraft engages the SkyHook cable with a hook installed on its wing. When using the vertical-lift FLARES kit, FLARES suspends the capture rope at roughly 300 feet, catching the aircraft via its wing hook and lowering it onto a recovery mast in under 5 minutes.
What engine does the ScanEagle use?
The aircraft uses either a heavy-fuel engine designed to burn JP-5 or JP-8 fuels or a C-10 gasoline engine.
How much does a ScanEagle drone cost?
Insitu does not publish a unit price or list price for the ScanEagle on its product pages.
Who makes the ScanEagle, and is Insitu owned by Boeing?
The ScanEagle is manufactured by Insitu. The business identifies itself officially as Insitu, A Boeing Company. Insitu designs both the ScanEagle and the larger Integrator tactical unmanned aircraft system. Our Insitu company profile is where we track its corporate structure and ownership.
How far can a ScanEagle fly from its operator?
The aircraft supports over-the-horizon flight using Proliferated Low-Earth Orbit satellite constellations. Insitu states that space-based connectivity enables command and control well beyond terrestrial radio range, supporting extended ISR sorties within its 18-hour fuel endurance window.