Models View all RASSOR - Contra-rotating, single arm configuration. 6 45 3 RASSOR DRUM SCOOP Assembly 11 48 14 Multi stage radial tandem harmonic gear box 13 223 6 Adjustable spanner 8 106 0 Lunar soil sampler 17 94 4 3D printing of aerospace metallic structures and 3D printing of ablative material on a carbon fiber honeycomb matrix 137 844 17