Superconducting magnets for Maglifter launch assist sleds

Citation
Jh. Schultz et al., Superconducting magnets for Maglifter launch assist sleds, IEEE APPL S, 11(1), 2001, pp. 1749-1752
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
1051-8223 → ACNP
Volume
11
Issue
1
Year of publication
2001
Part
2
Pages
1749 - 1752
Database
ISI
SICI code
1051-8223(200103)11:1<1749:SMFMLA>2.0.ZU;2-4
Abstract
The Maglifter is an electromagnetic catapult being considered by NASA to re duce the cost of lifting a payload into space. The system would accelerate a vehicle of up to 590 tonnes to a final velocity of 268 m/s at an accelera tion of 2 g. Superconducting coils are considered for levitation because th ey permit track-to-vehicle clearances of more than 95 mm. The high clearanc es reduce tolerances and maintenance costs, and allow a system with permane ntly deployed wheels for take- off and emergency landing. Cable-in-conduit conductors (CICC) were selected because of their high electrical and mechan ical strength, as well as high energy margin for stability. The selected co il shape is a pair of racetrack coils forming a module with four modules on a sled. The superconducting levitation modules weigh about 4% of the gross lift off weight and are capable of achieving lift off at about 20 m/s. The maximum magnetic drag power is negligible compared to the power required f or acceleration.