Formålet med bloggen er å bidra til informasjon om luftfart av alle slag. Også litt om ubåter og forsvarsspørsmål. Nyheter vil du finne her også, en del på engelsk som er det mest brukte luftfartsspråket. Har du selv noe som bør komme ut, så send meg en mail til per.gram@hesbynett.no
Bloodhound grounded til neste uke - Bilen har en NAMMO rakettmotor + Eurofighter motor - BBC
Bloodhound på Farnborough i 2016 - Foto: Per Gram
Bloodhound land speed car will be back racing next week
By Jonathan AmosBBC Science Correspondent, Hakskeen Pan, South Africa
9 November 2019
The Bloodhound land speed challenger is likely to be back out on its South African lakebed track early next week.
Engineers are now satisfied they understand why a heat alarm has been triggering on the car when it runs.
Bloodhound was in the middle of trying to post a speed of 550mph (885km/h) on Friday when the sensor system alerted driver Andy Green that temperatures might be too high in the engine bay. He aborted, pulling up early having reached only 481mph (774km/h).
Something similar occurred on Wednesday as well, although right at the end of the run when the vehicle was slowing down.
But by Saturday afternoon, the British Bloodhound team had split open the upper-chassis of the car for inspection, including of that troublesome sensor, and concluded there was nothing seriously awry.
Known as a "firewire", the sensor is essentially two parallel wires running through a plastic sheath.
This wiring criss-crosses the engine bay. When it gets too hot, the plastic melts and the two metal cores touch, triggering the alarm.
Engineers could find sections of firewire that had bubbled and warped, indicating they had experienced heating, but separate temperature strips in the bay revealed that nothing had approached the level of a fire risk.
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