New Segmented 3.png









SkyProwler is a vertical take-off and landing (VTOL) UAV/drone using the same switchblade transformation mechanism as SkyCruiser. It was recently on Kickstarter. It is now available for pre-order, please sign up for a pre-order coupon code.

Curious about SkyCruiser? Want SkyProwler? Let us know your email and we will send you a pre-order coupon.




Unparalleled Flight Performance

  • Aerodynamic Efficiency + Power = Speed (and also endurance and range)
  • Multirotor-powered vertical take-off and landing
  • Switchblade transformation in-flight
  • Efficient cruise flight purely on high-speed wings
  • High-powered thrusters





Multi-Mission Versatility

  • Winged Blade configuration for fixed wing cruise with multirotor-powered VTOL
  • Wingless Hornet configuration for pure multirotor flight
  • Easy reconfiguration in seconds in the field
  • Fully stabilized Eye Cam aerial action camera
  • Cargo drop-door module





SkyProwler Videos




Performance Parameters

Winged cruise speed (Blade config)

Cruise speed (Hornet config)

Winged Cruise (Blade) Range

Hornet Range

Max Ascent



Weather limit Blade

Weather limit Hornet

Service ceiling

Temperature range


Design Parameters

VTOL power systems

Thruster power system



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) 

~35mph/56kph (- ~15% with additional battery) 

~43 miles/69 km (+ ~40% with additional battery) 

~14 miles/22km (+ ~30% extra with additional battery) 

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

Blade ~40 min, Hornet ~24 min, (+ ~40 to 50% with additional battery) 

~550g/19.5oz (Blade), ~450g/16oz (Hornet)

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

Wind resistance ~22mph/35kph; 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

~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 Mission Planner; 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 Geo-fencing, Mapping, Surveys, GPS waypoints including transitions from cruise flight to hover and back, GPS follow, Automatic photography, Autonomous flight, etc.



12 Megapixel

ProAm 1080p30 - 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 30 frames per second (fps) and 720p at 60 fps

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

12 mega pixels

integrated gimbal stabilizaation (igs) via 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



Cruiser Segmented 3.png





SkyCruiser is a concept 5-seat hybrid VTOL transformer airplane with road-drive ability.
VTOL, vertical take off and landing, enables a traveler to travel directly from point A to point B,
instead of going from point A to an airport in a car say, then fly from the airport to another airport, and
then drive with a car from the other airport to point B. Rather than spending 3 to 4 hours going from LA to San
Francisco, for example, SkyCruiser takes you directly to your destination, point to point, in just a little over 1 hour.

Airplane Configuration - Fast and efficient forward flight

  • 505 kph / 314 mph cruise
  • 3 l per passenger per 100 km (76 passenger miles per g)
  • Hybrid power: ICU mated to electric grid driving electric motors



VTOL Configuration - Safe and quiet electric multirotor system

  • 8 independent VTOL rotors
  • Redundancy for extra safety
  • Arms and rotors fold away during switchblade transformation



Road Drive Configuration - For short trips on land

  • Wheel mounted electric motors, 150 hp total
  • Max speed: 120 kph / 75 mph
  • 0 to 100 kph (0 to 62 mph) in 7 s







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.


Technical Data

Airplane configuration - aerodynamically clean for fast and efficient forward flight

Airplane configuration - aerodynamically clean for fast and efficient forward flight

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

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



Width (hull)

Wingspan (full extension)



Empty Weight

Disc area (VTOL)

Electric power generation


VTOL electric motors

Propulsor electric motors

Cruise speed

Stall speed


Max take off weight

Fuel capacity

Maximum payload

Payload at full fuel load

Fuel efficiency (cruise flight)


Range (Cruise flight)

Maximum road speed

Road: 0-100 kph (0-62 mph)

8.4 m (27.5 ft)

1.3 m (cabin) / 1.8 m (road drive) / 2.3 m (tail surfaces extended)

1.5 m (4.9 ft)

9.5 m (31 ft) fully extended

8.1 sqm (87 sqft)


1,055 kg (2,216 lb)

70 sqm (754 sqft)

400 hp combustion engine coupled to 360 hp generator

12 kWh high discharge

4 x 80 hp electric motors (lift), 4 x 10 hp electric motors (lift + control)

2 x 150 hp

505 kph (314 mph)

160 kph (100 mph) fixed wing

145 kph (90 mph) fixed wing + small VTOL rotors

1,575 kg (3461 lb)

250 l (66 g)

455 kg (1,003 lb)

380 kg (838 lb)

15.1 l/100 km (16 mpg)

3 l per passenger per 100 km (1.25 g per passenger per 100 miles)

1,620 km (1.006 miles) with 5 passengers

112 kph (75mph)

7.5 s