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Product profile

Fi4

Fi4 is ACSL confined-space inspection drone. It uses a carbon-fiber core, foam bumper, stable flight controls and IP55 protection for narrow pipes and hars...

Facts

Company
ACSL
Product type
uav
Status
active
Website
https://product.acsl.co.jp/en/product/post-435/

About Fi4

Fi4 combines a rigid carbon-fibre core with a replaceable foam bumper that protects the aircraft during contact and provides flotation. Its forward-biased propeller arrangement lets the drone move through a narrow pipe without pitching sharply, reducing the control difficulty and risk of striking the surrounding surface.

A waterproof gimballed camera captures cracks and defects, while orthogonal imaging supports subsequent measurement. The 2.4-kilogram aircraft is IP55 rated, flies for approximately four minutes and reaches three metres per second. A dedicated smart-controller application displays the pipe environment in real time. ACSL developed Fi4 with NJS for sewer and closed-space inspection.

Summary

Type: Inspection drone

Core: Confined flight

Function: Find defects

Audience: Inspectors

Specifications

aircraft_weight
2.4 kg including survey camera and battery
applications
Sewer and duct survey, pipe navigation, GPS-denied inspection, confined-space survey
bumper
replaceable foam; flotation
controller
Smart controller with dedicated app, real-time pipe condition display
core_material
Carbon fiber
dimensions
610 mm length, 290 mm width, 145 mm body height, 220 mm camera-side height
flight_time_minutes
About 4 minutes maximum flight time min
ingress_protection
IP55
propeller_layout
forward-biased layout for pipe-like spaces
speed_range
3 m/s maximum flight speed m/s

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