Models View all RASSOR - Contra-rotating, single arm configuration. 5 33 3 RASSOR DRUM SCOOP Assembly 11 38 14 Multi stage radial tandem harmonic gear box 13 182 6 Adjustable spanner 8 100 0 Lunar soil sampler 16 76 4 3D printing of aerospace metallic structures and 3D printing of ablative material on a carbon fiber honeycomb matrix 128 764 17