The table below shows an comparison between different on-board power supply solutions
|
Typology
|
Energy Source
|
Heading direction
|
Max gen. Power
|
Traction
|
Altitude Wind
|
Power Utilisation
|
Yearly Availabilty
|
Operativity
|
|
Endothermic Engine Powered Vessel
|
|
Fossil
|
ALL
|
50 MW
|
Electric
Direct
|
N.A.
|
Traction
Aux
|
Always (depending on fuel availability)
|
AUTO
|
|
Hauled sail boat
|
|
Wind
|
120°(60°+60° hauled)
|
50kW
|
Aerodynamic Lift Effect
|
NO
|
Traction
|
3000h
|
MANUAL
|
|
Downwind sail boat
|
|
Wind
|
60°
|
30kW
|
Aerodynamic Drag Effect
|
NO
|
Traction
|
3000h
|
MANUAL
|
|
Skysails: direct kite-based traction
|
|
Wind
|
270°
[1]
|
5MW
|
Aerodynamic Enhanced Drag
|
YES
|
Traction
|
6000h
|
Servo Assisted
|
|
Alcyone: Savonius-based direct traction
|
|
Wind
|
ALL
|
4kW
|
Aerodynamic
|
NO
|
Aux
Traction
|
1600h
|
AUTO
|
|
KitVes Project: Electrical on-board generation possibly combined
with direct traction
|
|
Wind
|
ALL
|
60kW[2]
3MW
[3]
30MW[4]
|
Electric
Pure Lift[5]
|
YES
|
Traction
Aux
|
6000h[6]
|
AUTO
|
[2] KitVes maximum power based on the expected results from
the demonstrator realized in this proposal exploiting wind in altitude.
[3] KitVes maximum power up-scaling the demonstrator.
[4] KitVes possible improvement based on the combination of
the lift force with the airfoil thrust speed transferred to a linear
alternomotor slider running on the whole side of the vessel.
[5] The airfoil flight is performed so that the energy
subtracted to the wind is maximum. The airfoil control system drives the airfoil
in order to exploit the lift force, that is, the force component which is
orthogonal to the wind velocity. The airfoil lifts up sweeping the wind front
continuously.
[6] Altitude wind is typically more strong and constant
than the corresponding ground wind; The yearly availability is an open parameter
only limited by the flying altitude.