UWS-4 Aero Design: Part 3, Engine and Propeller Sizing

In part 3 of our video series on using Dan Raymer's Book "Simplified Aircraft Design for Homebuilders" to design the UWS-4 ultralight airplane, we work on Engine Sizing and Propeller Diameter and number of propeller blades (2 or 3). Engine sizing is just determining the Horse Power (HP) we need for takeoff. For the propeller diameter we use Dan's equations to get a first estimate and then use the desired propeller tip speed to determine the maximum diameter for the propeller to keep the propeller tip speed from creating a transonic shock wave..
If you want to find more detailed information about the design process you can get Dan's book here (This is an Amazon Associates link which means that the channel will get a small portion of the sale):
Dan Raymer's Book "Simplified Aircraft Design for Homebuilders":
amzn.to/3owAUJL
A list of books that I use in my ultralight design efforts can be found here:
www.ultralight...
Links:
UA-cam Channel: / @designer103
Aero Terminology Playlist: • Aero Terminology
UWS-1 Ultralight Design Playlist: • UWS-1 Design
Patreon: / ultralight_airplane_wo...
Facebook: / ultralightairplanework...
Website: www.Ultralight...
Aero Design Terms and Resources: www.Ultralight...
FAA AC 103-7: www.faa.gov/do...
Disclaimer: If you use any of the information that you see on this video on a project of your own, YOU become the engineer and responsible party for your project. It is possible that miscalculations were made in the production of this video. Since you are now the engineer for your project, you must verify the information that you use.