승자총통이 있고 창까지 달린걸 보니 조선 후기형 화차인거 같긴 한데 어떤 걸 참고하셨나요?

그냥 판타지 화차입니다. 검차와 문종 화차, 변이중 화차를 섞어보았습니다.

oh, it's one of those! volley rockets? I have been curious as to how those work.

Um.... okay? Thanks?

Well, actually, this one is a fantasy one more closer to a ribauldequin. I just mixed the elements of Geomcha (a cart with spears and a mantlet attached on it, used for anti-cavalry purposes), Munjong Hwacha (the rocket cart made famous by the Mythbusters), and Byunyijung [url=https://www.culturecontent.com/cont.....t=Y]Hwacha[/url] (three sided ribauldequin invented by Byun Yijung [1546-1611], a mid Joseon dynasty bureaucrat, in 1592) in one cart.

Maybe I should try sketching a series depicting how rocket carts were used.

Is "Hwacha" meant to be an onomatopoeia?

No, it is a Sino-Korean word that means 'fire cart' when translated literally. The name was used to refer to any type of war wagons that had firearms, be it rockets, handgonnes, arquebuses, or swivel guns, mounted on it. They were also called Hwageo, as the Chinese character for cart or wagon, 車, can be pronounced either 'cha' or 'geo' in Korean.

So this was a large class of weapons and not just rockets? Interesting! I'd heard of the rocket variation but I'm interested to learn there were others. I had assumed (since I only knew of the rocket version) that "Hwacha" was meant to represent the sounds of the rockets, sort of like the English term "whizz-bang" for certain artillery shells.

Hmm.... whizz-bang. Interesting. Quite a humorous name for a weapon.

By the way, if you are interested, this Youtube video shows firing demonstration of a reconstructed Chongtong Hwacha (Hwacha with handgonnes) at the begging, and this video shows firing demonstration of reconstructed Byunyijung Hwachas.

Impressive, especially the first one.

Also known as ribaldoes, orgues, and Orgelschutze (the last two owing to their resemblance to organ pipes)...