Superconducting electromagnets for large wind tunnel magnetic suspension and balance systems
Abstract
A superconducting electromagnetic suspension and balance system for an 8 x 8-ft, Mach 0.9 wind tunnel is presented. The system uses a superconducting solenoid as a model core 70 cm long and with a 11.5 cm OD, and a combination of permanent magnet material in the model wings to produce the required roll torque. The design, which uses an integral cold structure rather than separate cryostats for mounting all control magnets, has 14 external magnets, including 4 racetrack-shaped roll coils. Helium capacity of the system is 3.0 to 3.5 l with idling boiloff rate predicted at 0.147 to 0.2 l/h. The improvements yielded a 50-percent reduction in the system size, weight, and cost.
- Publication:
-
Applied Superconductivity Conference
- Pub Date:
- September 1984
- Bibcode:
- 1984apsc.conf.....B
- Keywords:
-
- Electromagnets;
- Magnetic Suspension;
- Superconductors;
- Weight Indicators;
- Wind Tunnel Apparatus;
- Solenoids;
- Structural Design;
- Wind Tunnel Models;
- Electronics and Electrical Engineering