|Credit: Wizkids Heroclix|
Wonder Woman's Invisible Jet first appeared in the Senational Comics #1 in January of 1942 by William Moulton Marston. According to Wikipedia, the plane was supposed to be allegorical political statement that women's suffragettes were made to feel invisible. It's an interesting interpretation, but surely it inserts a political spin on what should otherwise be a fantasy story.
|Credit: The New Original Wonder Woman|
|Credit: Super Friends TV Show|
But as Wonder Woman's powers developed flying on her own, the invisible jet plane was seldom used. But keeping it within the storyline, the plane was written with many new origins and even became self-aware. Later on, after the DC comics universe history reboot, the plane becomes more than a plane. It continues on to transform and adapt itself into corresponding eras. It changes even into other transports at Wonder Woman's need. It's been seen to even go under water.
The plane has no real defense weapons. Since being created by a pacifist society, there are no guns, cannons, lasers, or other weapons on board. According to wikipedia, the jet plane can fire projectiles from itself. But this is done as a last resort as the plane can only regenerate slowly.
|Credit: Super Friends TV show|
Even if a transparent jet seems campy, I think the name would be derived by it's purpose. It's supposed to be undetectable by radar - thereby making it a literal invisible plane. It was written ahead of it's time relative to science fiction. You could even speculate that it's the first ship to use cloaking technology.