The Future of Advanced Air Mobility

Heaviside is one of two single-seat personal air vehicles being developed by eVTOL startup Kitty Hawk, the other being the Flyer. The company has consistently refused to provide any information about the development timeline for these aircraft. 

It claims that Heaviside will be "100 times quieter" than existing helicopters, but declines to provide any supporting data.


Our objective assessment of this program’s probable success.

FutureFlight assesses the probability of success for a new aircraft program by considering the following criteria:

  • Total investment funds available in proportion to the anticipated cost of getting an aircraft certified and in service
  • A company’s in-house capability (in terms of numbers of engineers, technical staff, and customer support teams)
  • The past experience of the company and its senior leadership in developing aircraft
  • The caliber and past experience of key program partners
  • Whether key aircraft systems have been selected and are available for use
  • Whether the preliminary design review has been completed
  • Whether the design for the full-scale prototype has been completed
  • Whether the type certification process has been formally initiated with an appropriate regulator
  • Whether the company has achieved a first flight with a full-scale prototype
  • The number of hours logged in a flight test program
  • Whether type certification has been achieved
  • The number of orders and commitment received for the aircraft
  • Whether the company has adequate facilities to begin series production of the aircraft
Our Methodology

Since Kitty Hawk spun off its Cora eVTOL aircraft into the new Wisk joint venture with Boeing, it has been unclear what will become of its Heaviside and Flyer models. It refuses to clarify how far work has progressed on either aircraft or provide any projected performance data.

Kitty Hawk Personal Air Vehicle Models

Heaviside Specifications

Optionally-piloted vtol Tiltrotor


  • Passenger Capacity
  • Range
    100 mi
  • Cruise Speed
    180 mph
  • Powerplant Type
  • Power Source
  • Endurance
  • Max Altitude
    5,000 ft
  • Takeoff Distance
  • Landing Distance
  • Empty Weight
    826 lb
  • Payload Weight


  • Length
  • Width
  • Height
  • Wingspan
    20 ft

The Heaviside tiltrotor aircraft has eight electric motors, powering eight propellers. Six of the tilting propellers are located on the rear edge of the main wing, with two more on a forward canard.