SkyProwler is a vertical take-off and landing (VTOL) transformer drone using the switchblade transformation mechanism. Accessories include a 3D-stabilized camera and a cargo drop door. Please sign up for a Christmas discount coupon and visit our store.



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Airplane configuration - aerodynamically clean for fast and efficient forward flight

VTOL configuration - a big rotor disc area for efficient VTOL and hover

Technical Data and Details

Switchblade Mechanism

The patent pending switchblade mechanism forms the basis of the transformation of SkyCruiser and SkyProwler. Airplanes need to fly fast and to fly fast you need to be as aerodynamically clean as possible. That's why airplanes are long and narrow, somewhat drop-shaped and with as few 'things' sticking out as possible.

For vertical take-off and landing on the other hand, you need to be the opposite of aerodynamic. The more things you have sticking out producing lift (think of the extreme of a parachute for example) the easier it is to hover. This is one of the main reasons that helicopters which a great at hover, are not very good at forward flight, being slow as well as needing a lot of fuel.

The switchblade mechanism transforms an aircraft from the aerodynamically clean airplane configuration to the VTOL configuration, which features a number of rotors that together have a large rotor disc area that is ideal for hovering at low power.

The switchblade mechanism is of similar technical complexity as a gear retraction mechanism and in itself adds very little weight to SkyCruiser and SkyProwler.


Multi-Mission Versatility

SkyProwler can be reconfigured to fly without wings. You can simply take the wings off and fly SkyProwler more like a traditional multirotor. This makes it a slower aircraft with less range and endurance. But it makes it smaller and hence more suitable for small spaces, it makes it less susceptible to cross wind while hovering and it adds duration to its hover time because without wings the aircraft is lighter.

Blade configuration (with wings) and Hornet configuration (wingless).

Blade configuration (with wings) and Hornet configuration (wingless).

Performance Data

Winged cruise speed (Blade config)

Non-winged cruise speed (Hornet config)

Winged Cruise Range (Blade Config)

Hornet Range (No Wings)

Max Ascent



Weather limit Blade

Weather limit Hornet

Service ceiling

Temperature range


Design Parameters

VTOL power systems

Thruster power system



Number of batteries

VTOL propellers

Thruster propeller



Length of hull w/o tail and nose cone


Control and Interfacing

Ground station radio frequency

Ground station radio technology

Video down-link

Telemetry radio frequency

Ground station radio and video antennas

Flight controller CPU:

Flight controller compatibility


Ground control software

Ground control software based on

Ground control software functionality




Eye Aerial Action Cam and integrated gimbal stabilization (igs)

CMOS Imaging Chip

SD card

Camera trigger

Camera orientation (roll, pitch, yaw)

ProAm video

Upgrade Pro and ProX video

ProAm and Pro photo

Brushless Motors for igs

IGS controller

Lens mount

Eye Cam ProX upgrade


~60mph/100kph (- ~10% with additional battery)

~30mph/50kph (- ~15% with additional battery)

~40 miles/65 km (+ ~40% with additional battery)

~10 miles/15km (+ ~30% extra with additional battery)

~4m/s Blade, ~6m/s Hornet

Blade (Wings) ~40 min, Hornet (No wings) ~15 min, (+ ~30 to 40% with additional battery)

~450g/16oz (Blade), ~400g/14.5oz (Hornet)

~15mph/24kph crosswind during VTOL, otherwise ~25mph/40kph; light rain

Wind resistance ~20mph/32kph; light rain

~5,000m/16,500ft (Blade cruise flight); ~4,500m/14,800ft (Hornet)

~-15ºC/5ºF to 50 ºC/122ºF; check battery condition, especially in cold weather



4x ~130W, ~1,200rpm per input Volt

1x ~400W, ~1,300rpm per input Volt

digital, metal-geared, with bearings

3 cells ~5,000 mAh or 4 cells ~4,000 mAh

2: one in main battery hold (standard); one in cargo hold (additional)

~9 inch

~9 inch

Composites, carbon fiber, 7075-T6 aircraft aluminum, high strength foam, ABS





2.4 Ghz (FCC and CE compliant)

based on FrSky technology

5.8 GHz (FCC and CE compliant)

433 Mhz or 915 Mhz


32 bit, 168 Mhz, 256 KB RAM, Pixhawk based; with backup CPU

provided receiver; third party receivers such as Futaba (SBus), Spektrum or FrSky (SBus)

USB interface on flight controller and ground station radio

 GPS waypoints, GPS follow, autonomous missions, flight logging

open source Ground Control Software; will be available for download to all customers

program SkyProwler for autonomous missions independent of the radio ground station, it typically runs on a laptop and can connect to SkyProwler via a cable or in the air, via the telemetry radio, enables Mapping, Surveys, GPS waypoints including transitions from cruise flight to hover and back, Automatic photography, Autonomous flight, etc.




16 Megapixels

ProAm 1080p60 - class 10; Pro/ProX - SanDisk Extreme Plus or equivalent

via radio ground station or via on board buttons

Pitch control: +/- 90 degrees, Roll: +/- 45 degrees; Yaw: +/- 30 degrees

1080p HD at 60 frames per second (fps) and 720p at 120 fps

4K UHD at 30 fps, 1080p HD at 60 fps and 720p at 120fps

16 mega pixels

integrated gimbal stabilization (igs) via 3 x 12N14P micromotors

3-axis micro gimbal controller


allows for rapid lens and filter exchange allowing for in-field reconfiguration of the Eye Cam Pro (4K) for wide angle or zoomed (~ 2x zoomed) field of view with either a daylight filter or an NIR filter; more filters available upon request; advantage of separate filter and lens are vastly reduced costs because filters are cheaper than lenses