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
An aircraft with an engine. A non-self propelled aircraft would be a balloon or a glider.
* the line or plane indicating the limit or extent of something * a light, self-propelled movement upwards or forwards
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.