Recent content by ridgerunner

For the sake of further discussion on this topic, allow me to present a working example problem which illustrates the principles at play. We'll use nice small integer values for all relevant parameters to simplify the needed calculations. The following example represents a DDW propeller cart...

A.T., Thank you for the response. I greatly respect your opinion. Indeed, you were the first person to respond to my Spork limit derivation when I first presented it, (in rough, handwritten form,) nearly three years ago. In your response at that time, you stated: "I have not checked the math...

I've written a paper that applies to an idealized DDWFTTW vehicle traveling at wind speed, i.e. the special case where a toy cart is hovering in a stationary position on a treadmill. This analysis assumes that the cart has a 100% efficient transmission connecting the rear wheels to the propeller...