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Posted by on Sep 8, 2013 | 0 comments

Rotary Wing Vs Fixed Wing UAVs

Rotary Wing Vs Fixed Wing UAVs

One of the first decisions that anyone looking to employ UAV technology will need to consider is whether to opt for a “Fixed Wing” or a “Rotary Wing” aircraft.  Both categories of platform possess a unique set of advantages and limitations that render them more or less suitable for different applications.  Understanding the key characteristics of each and the corresponding implications on their use is essential for identifying the ideal UAV to meet your needs.

Fixed wing aircraft are characterised by a comparatively simpler structure and more efficient aerodynamics that provide the advantage of longer flight durations at higher speeds.  UAVs like the Trimble Gatewing X100 are capable of a maximum flying time of 45 minutes with a cruising speed of 80km/h.  This makes fixed wing UAVs ideal for applications like aerial survey which requires the capture of geo-referenced imagery over large areas.  A limitation to fixed wing aircraft are that they are dependent upon either a launcher or a runway to facilitate takeoff and landing, which can also have subsequent implications upon the type of payloads that they carry.  To land a fixed wing UAV like the Trimble Gatewing X100 it is recommended that you have a landing space of 150m x 30m.

In contrast, rotary wing aircraft involve greater mechanical complexity which translate generally into lower speeds and shorter flight ranges.  A hexacopter like the Aibotix X6 has a maximum flying time of around 30 minutes with a top speed of around 60km/h.  Their advantages, however, are their ability for Vertical Takeoff and Landing (VTOL) and their capacity to hover and perform agile maneuvering.  This makes rotary wing UAVs well suited to applications like facility inspections, which require maneuvering around tight spaces and the ability to maintain visual on a single target for extended periods.  Rotary wings also facilitate greater flexibility with the payloads that they can deploy.

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