4wings.com Main page

Our Hovercraft products

• Alpha-I - 2 passenger Hovercraft
• Alpha-II - 4 passenger plus pilot Hovercraft
• Alpha-II - 6 passenger plus pilot Hovercraft

Guest pages:

• Airlift Hovercraft Hoverflyer 6 passenger Hovercraft with video link
• Airlift Hovercraft 7 passenger commercial rescue and military Hovercraft with video link
• Airlift Hovercraft 25 passenger commercial Hovercraft with video clip
• Industrial Object's GTH  Hovercraft

• "Mustang" from Airlift Hovercraft with video clip
• "Donar" from ABS Hovercraft with short video clip
• "Air rider " model Booster, Hunter and Wildcat
  

Hovercraft designs

• Update March 99
• Update may 99
• Update Jane. 2000
• Update June 2000
• Update Autumn 2002

Plans and Catalogs

Supplier and Material

Organizations and regulations

Tips and tricks

• Hovercraft hulls - core materials
• Hull construction
• Composite / sandwich  construction
• Epoxy
• Mixing epoxy - pottlife
• Kevlar
• Hovercraft skirt
• Bag-skirt
• Finger-skirt
• Bag and Finger skirt
• Lift calculator
• Engine compartment
• Mazda Wankel 13B Engine
• Service manual for Sachs Wankel (RC 1-18.5 , KM914B , KM24)
• Sachs Wankel engine KM 24 Manual ( 23 hp at 6000 RPM) 
• Fuel system on high speed Hovercraft
• Marinizing a Subaru 1.800 cc engine
• The "alternative drive" or  Hydraulic system  - "Fluid power "
• Velocity and pressure drop in pipes
  
• Duct Myths, Duct Physics
• Tip speed on fan or props
• Control Surfaces

Hovercraft Gallery

• Several image pages after the entrance

Frequently Asked Questions

• Where is a Hovercraft used
• Environmental impact of Hovercraft
• Flying a Hovercraft
• If a Hovercraft is so good - Why do we not see more in service
• Hovercraft History with video clip
• Our location - Info to Port Isabel
• South Texas weather links
  

File library

General aspect / overview

• Advanced Marine Vehicles Concepts

Hydraulic files:

• Flow controll / valves
• Pressure - Flow compensated piston pump
• Medium Duty Piston Motor
• Hydraulic filter
• Cooling and Heating in hydraulic systems
• Air cooled oil cooler
• Heat exchanger
• Hydraulic hose specifications
• Pressure rating of hydraulic tubing
• Velocity and pressure drop in pipes and Kinematic viscosity for some common fluids
• Hydraulic systems in aircraft
  

Flexible couplings engine to drive:

• Centaflex coupling

Controll surfaces:

• Differentally acting Elevons
• Pneumatic variable flow splitter

Propeller - Ducts

• Ducted propeller
• Shroud design
• SHROUDED ROTORS
  
• Wind rotor / fan  - blade construction
• Jetfan info
• Ducted counter-rotating axial flow fans
• Ducted fan propulsion for UAV
• Ducted fan propulsion for UAV
• Variable pitch fan
  

Engines:

• http://4wings.com/lib/files/Diesel200lb.pdf
• Yanmar marine diesel
• Sachs Wankel engine disasembly
• Sachs Wankle service data
• 
  

Wankel rotary combustion engines in relation to other engines for Hovercraft:

• Part 1
• Part 2
• Part 3
• Part 4
• Part 5
• Part 6
• Part 7
• Part 8
• Part 9
• Part 10
• Part 11
• Part 12
• Appendix 1
• Appendix 2
• Appendix 3
• Appendix 4
• Appendix 5

Fuel tanks

• Kracor marine fuel tanks

Parts break down :

• Hovercraft America parts list

Alternative energy approach:

• Building Battery Arrays with Lithium-Ion Cells
• How to build a 'permanent magnet generator' (PMG).
• How to build blades for your windturbine
• Solarheating