fgreco@govt.shearson.COM (Frank Greco) (05/24/91)
) We are trying to bring up an Air Traffic Control display on ) an X window terminal and there seems to be some problems. [insert-favorite-deity-here] help us all! Frank G.
jpc@fct.unl.pt (Jose Pina Coelho) (05/27/91)
In article <9105241440.AA25083@fis1.shearson.com> fgreco@govt.shearson.COM (Frank Greco) writes: > ) We are trying to bring up an Air Traffic Control display on > ) an X window terminal and there seems to be some problems. > > [insert-favorite-deity-here] help us all! Forget about the favourite, just insert them all. The planes are going to start crashing by the dozen each hour. As long as X can be crashed by a stray client (though it needs no client to crash) it cannot be used for applications where safety is considered. Of course, in a simulator would be O.K. Attention ANA76, VAR89, TYD457: Lookout for each other, the shape extension is gone and we can't tell you appart. [General Broadcast] - Everybody: the server has gone down and we need 5 minutes to get it and the ATC running... Trty not to crash. -- Jose Pedro T. Pina Coelho | BITNET/Internet: jpc@fct.unl.pt Rua Jau N 1, 2 Dto | UUCP: ...!mcsun!unl!jpc 1300 Lisboa, PORTUGAL | Home phone: (+351) (1) 640767 - If all men were brothers, would you let one marry your sister ?
erwin@trwacs.UUCP (Harry Erwin) (05/28/91)
jpc@fct.unl.pt (Jose Pina Coelho) writes: >In article <9105241440.AA25083@fis1.shearson.com> >fgreco@govt.shearson.COM (Frank Greco) writes: >> ) We are trying to bring up an Air Traffic Control display on >> ) an X window terminal and there seems to be some problems. >> >> [insert-favorite-deity-here] help us all! >Forget about the favourite, just insert them all. >The planes are going to start crashing by the dozen each hour. >As long as X can be crashed by a stray client (though it needs no >client to crash) it cannot be used for applications where safety is >considered. >Of course, in a simulator would be O.K. >Attention ANA76, VAR89, TYD457: Lookout for each other, the shape >extension is gone and we can't tell you appart. >[General Broadcast] - Everybody: the server has gone down and we need >5 minutes to get it and the ATC running... Trty not to crash. These concerns are real. Air Traffic Control has to be man-rated, or at least it has to avoid degrading safety. I work in this area, and X performance (as well as reliability) is not yet up to the requirement. Harry Erwin erwin@trwacs.fp.trw.com -- Harry Erwin Internet: erwin@trwacs.fp.trw.com
rgalek@faatcrl.UUCP (rgalek) (05/30/91)
erwin@trwacs.UUCP (Harry Erwin) writes: >These concerns are real. Air Traffic Control has to be man-rated, >or at least it has to avoid degrading safety. I work in this area, >and X performance (as well as reliability) is not yet up to the >requirement. > Harry Erwin > erwin@trwacs.fp.trw.com Would you care to be more specific about the exact ATC requirements the X performance and reliability are not up to? Also, does the present NAS system then meet these requirements in your opinion? Richard Aleksandr