A straight wing is good for a low-powered, slow moving aircraft. A straight, thick wing is good for short takeoff and landing aircraft, and high-speed, high-thrust aircraft need a swept wing.
self propelled reaper
Lunokhod-1 was the first self-propelled vehicle on the moon.
They didn't invent the plane, they just built the first working self propelled plane in 1907 at Kitty Hawk beach NC btw it's spelled Wright
* the line or plane indicating the limit or extent of something * a light, self-propelled movement upwards or forwards
An aircraft with an engine. A non-self propelled aircraft would be a balloon or a glider.
How to Change the Tires on Self-Propelled lawn Mower
How do you change the blade on a Toro 21" self-propelled mower
Dyson makes several different models of self-propelled vacuums.
A rocket.
The modern definition of a torpedo is a self-propelled underwater missile. (see related question)
There were 4 wheels on the first self propelled vehicle, built by Henry Ford.
Use a wound up rubberband as propulsion. I'll leave the design to your imagination.