Patriot armsX4
Patriot
Four arms. Four motors.
The configuration for long-endurance missions.
Coaxial heavy-lift multirotor
Kestrel
Lift with confidence.
A rugged, heavy-lift UAV with coaxial motors and independent electronic speed controllers, designed to carry demanding professional payloads.
Estimated cruise / mission time55 minutes
1.75 kg payload · 52 Ah battery.
Excludes a fixed 10-minute reserve. Modelled, not flight-tested.
EVOLUTION FLIGHT / KESTREL
Coaxial heavy-lift multirotorDesigned in Australia. Manufactured in the USA and Australia
Maximum payload10 kg / 22.0 lb
Payload interfaceQuick-connect
Manufacturing · Australian designUSA & Australia
Patriot + Kestrel · A shared airframeChange the arms.
Change the arms.
Change the capability.
One airframe can be your Patriot X4 or your Kestrel X8. Fit Patriot arms for a quadcopter, or swap to Kestrel arms for a coaxial X8.
Same
airframeTool-free
arm changes
airframeTool-free
arm changes
Kestrel armsX8
Kestrel
Four arms. Eight motors.
Fit the Kestrel arm set for coaxial X8 capability.
Tool-free. In minutes.
Removing the arms is part of normal assembly and pack-down. It takes only a few minutes and requires no tools. The landing legs also detach without tools.
A spare arm. More options.
Carry a spare arm, a clockwise (CW) propeller and a counter-clockwise (CCW) propeller. You have the parts for a replacement arm setup in the field if something happens.
Big capability. Small pack-down.
With the arms and legs removed, the drone packs down to a very compact size. Bring the Kestrel arm set too, and the same airframe can become an X8.
Choose the arms to suit the mission.
Discuss both configurationsKestrel · Flight-time estimatesPlan around
Plan around
your payload.
See how payload and battery choice affect estimated mission time. These examples use the same cruise / mission model as the calculator.
4.7 kg battery · 17.90 kg total weight
5.2 kg battery · 18.40 kg total weight
| Total payload | 40 Ah battery | 52 Ah battery |
|---|---|---|
| 1.75 kg | 42 min | 55 min |
| 3 kg | 37 min | 49 min |
| 5 kg | 31 min | 41 min |
| 8 kg | 23 min | 32 min |
All figures exclude a fixed 10-minute battery reserve and include the 11.45 kg airframe, battery and stated payload. Payload includes the sensor, mount and accessories. These are modelled estimates, not measured Kestrel flight results or guaranteed endurance. Cruise efficiency and reserve are modelling assumptions; wind, battery condition and powered payloads can reduce flight time.
Calculate your Kestrel missionExplore your flight time
Start with your mission.
Choose your aircraft, payload and battery. See a modelled flight-time estimate and build a configuration brief.
Your configuration briefDiscuss this configuration ↗
Patriot configuration
Estimated cruise / mission time—
How this estimate is calculated
Based on Evolution Flight’s flight-performance model, using your selected aircraft, battery and payload. The calculator uses the efficient-cruise profile to estimate available mission minutes.
The calculator subtracts a fixed 10-minute battery reserve from the modelled flight time before displaying your mission minutes. This reserve model does not predict a landing voltage. Cruise efficiency is a modelling assumption, not a measured mission result.
Weight includes airframe, battery and entered payload. Powered sensors, wind, air density, battery health and flight manoeuvres may reduce endurance. Low-thrust estimates extrapolate below the bench measurements. Confirm your complete mission configuration with the team.
Measured reference68 minutes in hover
Modelled estimates, not guaranteed flight times. Your choices carry into the enquiry.
Designed around your operation
Capability that counts.
Designed for survey-grade LiDAR, cinema cameras and other professional sensors, the Kestrel uses the same airframe as the Patriot with coaxial X8 arms. Swap the arms to change configuration, and remove arms and landing legs without tools for compact transport.
01
Independent propulsion
Each arm has two independent motors and controllers, providing propulsion redundancy.
02
Stability in wind
Coaxial propulsion helps maintain control and stability in turbulent conditions.
03
Tool-free modularity
Remove the arms in a few minutes as part of everyday assembly and pack-down. The landing legs also detach without tools for compact transport.
04
Secure control
Encrypted data links, permission-only hardware pairing, and locally retained flight data.
05
Payload integration
A dampened quick-connect mount helps isolate vibration and makes payload changes simple.
Configure your capability
The right payload changes everything.
Discuss a Kestrel configuration around the sensor, mounting, power and data interfaces you need.
010203
LiDAR systems
Explore sensors for aerial and ground-based mapping.
Camera & mapping workflows
Bring imaging, positioning and processing together.
Custom integration
Review mounting, power and data connections.
Payload compatibility is confirmed for each configuration. Archive imagery illustrates previous integration work.
Discuss your payloadTechnical details
Download specification sheetKestrel specifications.
| Maximum payload | 10 kg |
|---|---|
| Maximum take-off weight | 25 kg |
| Shared airframe | Kestrel X8 or Patriot X4 by changing the arm set |
| Assembly and pack-down | Tool-free removable arms and landing legs; arm removal takes a few minutes |
| Estimated cruise / mission time | 55 estimated mission minutes · 1.75 kg payload · 52 Ah battery · excludes 10-minute reserve |
| Estimated cruise / mission time — 40 Ah | 42 minutes · 1.75 kg payload · excludes 10-minute reserve |
| Maximum tested wind | 36 km/h (10 m/s) |
| Rated wind tolerance | 25.2 km/h (7 m/s), ground level, no payload |
| Maximum survey speed | 12 m/s |
| Maximum flight speed | 15 m/s |
| Operating temperature | −10°C to 40°C, no payload |
| Airframe without battery or payload | 11.45 kg |
| Battery options | 40 Ah · 4.7 kg / 52 Ah · 5.2 kg; model assumes 12S |
Published figures vary with payload, batteries, accessories, environment and operating reserves. Endurance ranges do not represent flight time at maximum payload. Reference PDFs may cover earlier configurations. Confirm the current mission specification with our team.
Make an informed choice
Plan the aircraft around the job.
Work through payload, endurance and field logistics before choosing a configuration.
LiDAR drone buying guide
Compare complete payload mass, flight-time evidence and the integration questions that matter.
Read the buyer’s guide ↗The 68-minute Patriot result
See the payload, battery and endpoint behind the measured hover result.
Review the test configuration ↗Patriot X4 or Kestrel X8?
One shared airframe, interchangeable arm sets and two configurations for your operation.
Compare the current aircraft ↗Beyond the aircraft
Keep your operation moving.
Find aircraft documentation, warranty information and customer support through Evolution Flight One.
01
Aircraft documentation
Download the Kestrel reference specification sheet.
View specification PDF 02Warranty & supply terms
Read the 2026 Terms and Conditions of Supply and Limited Warranty Policy.
View warranty & terms 03Customer portal
Access your account and customer support through Evolution Flight One.
Open Evolution Flight OneBefore your next mission
A few useful answers.
Which flight-time figure should I use?
Kestrel flight times are modelled cruise / mission estimates, not measured flight results. At a 1.75 kg payload, the calculator estimates 42 minutes with 40 Ah or 55 minutes with 52 Ah, with a fixed 10-minute reserve already excluded.
Can I carry the maximum payload with either battery?
Check the complete take-off mass. With an 11.45 kg airframe and 25 kg maximum take-off mass, the remaining mass is 8.85 kg with the 4.7 kg / 40 Ah battery or 8.35 kg with the 5.2 kg / 52 Ah battery. This must include the payload, mount and any additional equipment. The separate 10 kg payload ceiling does not override the take-off limit.
How do I confirm a LiDAR integration?
Send the exact sensor model, total installed mass, dimensions, centre of gravity, power demand and data interfaces. Compatibility and mission performance are reviewed for the complete configuration. Read our LiDAR drone buying guide to prepare your brief.
Can one airframe be both a Patriot and a Kestrel?
Yes. Patriot and Kestrel share the same airframe. Fit Patriot arms for the X4 quadcopter configuration, or change to the Kestrel arm set for the coaxial X8 configuration.
Do I need tools to assemble or pack down the aircraft?
No tools are needed to remove the arms or landing legs. Removing the arms takes only a few minutes and is part of normal assembly and pack-down, leaving a very compact aircraft for transport.
What arm spares can I carry in the field?
Carry a spare arm plus a clockwise (CW) and a counter-clockwise (CCW) propeller to have the parts for a replacement arm setup available in the field.
How do I choose a payload?
Share the sensor model, total weight, dimensions, power needs and data interfaces. We will review the mounting and aircraft configuration with you.
How long will it fly with my payload?
Endurance depends on the complete configuration, flight profile, conditions and reserve requirements. Ask for a mission-specific estimate; the published endurance range is not a claim at maximum payload.
Where can I get documentation and support?
Use the aircraft specification download, browse Support & resources, or open the Customer portal for help through Evolution Flight One.
Build your configuration
Let’s talk Kestrel.
Tell us your application, payload and operating environment.
Discuss Kestrel