(https://blogger.googleusercontent.com/img/a/AVvXsEirHxlxZioFokPFF0ohJ22MxDAThvTqaP9ejETZf0Rc2vJttnegbGkh3aw_aQBvQYAvrR3MyVTAsVVmFAn930RWV7_sVQ4b4CboEeEb7cQdEyothB2SJ_C_VmPfPkfGlorZW-XqX5S8w3nM2njL4RDuqjuHjfBTWY6eMnIYMzxwSfms3kL5bOjZYVlpdA=s900)
I've been fiddling around in Blender, putting together a Space Opera spaceship loosely based on the ship of Doctor Zarkov in the 1935 Buster Crabbe Flash Gordon serials.
Something I hadn't remembered, but which I discovered when I looked at a screen-shot from one of the films, is that the ship has a fixed undercarriage just like an aeroplane of the era.
(https://blogger.googleusercontent.com/img/a/AVvXsEiz1qvsWVEokNP-PRvaCFObw2rkK1Zk-ZRvvZ8UwO8A4y5LhDnqGAMMcQvxixxiQqC6JPJeVwsldaHkFEUb52CP13yysk_dYeW2vOXXKBE1xN6yfJceHSShqAyeULhbh0HPi14GGRpoCjtEU2rnM_c_j-lgpDXHMgKWmPWLDMAsTKOrh55XF1j7VzTg9w=s600)
I tried a variety of layouts for the STLs.
The one-piece model (the red one) didn't print well at all; Cura's support game proved to be weak.
The green one, split longitudinally, worked fairly well, but in the end I went with the blue one, split fore and aft, as it required the absolute minimum of supports.
The STLs are available (free) at https://www.thingiverse.com/thing:5215636 (https://www.thingiverse.com/thing:5215636)
The model, as designed, is roughly 150mm long.