| 摘要 |
FIELD: transport. ^ SUBSTANCE: invention relates to space engineering, particularly, to planet research vehicle motion on planet surface. Screw comprises metal rod 1 whereon elastic metal tube 2 is fitted. Tube 2 is tightened by moving ropes 3 spaced apart for distance "H". Said ropes, as-tensioned, are locked by clips 4. Spring coil 5 is coiled over elastic tube 2 with pitch "L". With screw slipping, said pitch "L", rope tightening diametre "D" and distance "H" vary. Thus, planet research vehicle cross-country capacity increases. ^ EFFECT: expanded performances. ^ 2 dwg |
