Zobrazeno 1 - 10
of 17
pro vyhledávání: '"B.L. Maas"'
Publikováno v:
Community Ecology. 6:167-176
Plant community types and botanical composition of herbaceous and woody plants in the Borana lowlands were investigated by multivariate methods (TWINSPAN and DCA) based on 125 plots of size 20 m × 20 m sampled from three districts across different f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d547ed1239320c8aa11f49709561f7cf
https://doi.org/10.1556/comec.6.2005.2.5
https://doi.org/10.1556/comec.6.2005.2.5
Autor:
B.L. Maas, D.P. Bauer
Publikováno v:
IEEE Transactions on Magnetics. 31:203-208
The use of serrated bore surface has the potential to overcome the velocity performance limitations of railgun plasma armatures. The authors evaluated several serrated bore configurations to determine their effect on plasma armature length, stability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32518f5c5508f99cf25bb2922238856d
https://doi.org/10.1109/20.364701
https://doi.org/10.1109/20.364701
Publikováno v:
IEEE Transactions on Magnetics. 29:1017-1020
Peak current ratings for diodes are usually given as a surge current rating for a specified pulse. These surge current ratings can be as high as several 10's of kA for the larger devices. It has been found that these devices are capable of conducting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9d6327beae2a897f898ef702e851024
https://doi.org/10.1109/20.195719
https://doi.org/10.1109/20.195719
Publikováno v:
IEEE Transactions on Magnetics. 29:461-466
It is noted that several deficiencies hamper full-scale railgun development for hypervelocity applications. Two key deficiencies are lack of hypervelocity performance (i.e., >6 km/s) and lack of compact power supplies. Highly distributed power suppli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d949a207d5b5166414639f209d6a3410
https://doi.org/10.1109/20.195619
https://doi.org/10.1109/20.195619
Publikováno v:
IEEE Transactions on Magnetics. 29:745-750
The authors have been investigating alternative techniques for controlling the residual plasma left behind by the accelerating plasma armature. They believe that, if residual plasma resistance can be made sufficiently high, secondary currents will no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09c7868d7835b718829c514b95b59540
https://doi.org/10.1109/20.195669
https://doi.org/10.1109/20.195669
Publikováno v:
IEEE Transactions on Magnetics. 29:763-768
The authors describe the theory and test results for multiarmature launch of high L/D (length-to-diameter ratio) projectiles. Railgun launchers with multiple armatures can distribute the accelerating force. Each armature is supplied gun current for a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b50cf101d6713b258f758b90cd86939
https://doi.org/10.1109/20.195672
https://doi.org/10.1109/20.195672
Publikováno v:
IEEE Transactions on Magnetics. 29:467-471
It is pointed out that railgun barrels containing multiple isolated rail pairs can be used to control armature current distribution and/or to obtain independent circuits for use with specialized power supplies. Armature current control can be used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6af56841ee75ba0c543de89641312ccb
https://doi.org/10.1109/20.195620
https://doi.org/10.1109/20.195620
Publikováno v:
IEEE Transactions on Magnetics. 25:353-356
The authors have devised and tested a technique that allows the armature contact and bulk voltage to be measured during a railgun launch. The technique has been applied to both plasma and metal armatures. It requires no specialized equipment and can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91c8dee35e56602ca87df72f9e561eea
https://doi.org/10.1109/20.22563
https://doi.org/10.1109/20.22563
Autor:
J.P. Barber, B.L. Maas
Publikováno v:
IEEE Transactions on Magnetics. 25:72-74
It is noted that electrical contacts have not been experimentally investigated at velocities above a few hundred meters per second. The authors describe a ballistic technique which can be used to measure friction coefficient and contact resistance at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bc15156162cfa7199b1c4998ec0b2ce
https://doi.org/10.1109/20.22507
https://doi.org/10.1109/20.22507
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