194 Ë 6 First manned HTS Maglev vehicle in the world
Fig. 6.54:Evaporation rate of the new
thin-bottom liquid nitrogen vessel [22].
Fig. 6.55:Photographs of the on-board HTS Maglev equipment.
equipment was fixed to the HTS Maglev measurement system SCML-01. The on-board
Maglev equipment was above the PMG, and it could move up and down at different
velocities. Figure 5.7b shows the measuring system for the levitation forces on a single
on-board HTS Maglev equipment over a single-NdFeB PMG [54].
The first levitation forces of single on-board HTS Maglev equipment over the PMG
were measured successfully on December 2, 2000. Figure 6.56 shows the measurement
interface for the levitation forces on the single on-board HTS Maglev equipment
over a NdFeB PMG (surface magnetic flux density was 1.2 T). The main data of
the levitation forces of the single on-board HTS Maglev equipment are listed in
Tab. 6.12. As shown in Fig. 6.56 and Tab. 6.12, the levitation force of single on-board
HTS Maglev equipment over the PMG was 1202 N at a levitation gap (between PMG
surface and superconductors) of 15 mm. The levitation force was 1724 N at a levi-
tation gap of 8 mm. Moreover, the levitation force was up to 1823 N at a levitation
gap of 7 mm.
The levitation forces of single on-board HTS Maglev equipment above the PMG
were measured again on December 24, 2001 [26]. Figure 6.57 shows the levitation
forces of single on-board HTS Maglev equipments above the PMG. Figure 6.58 shows