Bloodhound LSR Thread As Requested...
Discussion
Warmfuzzies said:
Storer said:
Are the fuel tanks/bladders foam(or something) filled to slow movement of the liquid. This would be of major importance if the car started to move away from straight ahead.
Rapid movement of large amounts of liquid can completely destabilise a vehicle.
None of you at Bloodhound are novices so I am sure you have this calculated to the Nth degree but it would be interesting to hear what you have done.
The word bladder is used, could i infer a collapsable tank, therefore negating the movement of liquid as the fuel is used?Rapid movement of large amounts of liquid can completely destabilise a vehicle.
None of you at Bloodhound are novices so I am sure you have this calculated to the Nth degree but it would be interesting to hear what you have done.
The jury is out currently on whether or not to fit the foam as in Thrust SSC it caused some issues with blocking filters.
IN51GHT said:
Warmfuzzies said:
Storer said:
Are the fuel tanks/bladders foam(or something) filled to slow movement of the liquid. This would be of major importance if the car started to move away from straight ahead.
Rapid movement of large amounts of liquid can completely destabilise a vehicle.
None of you at Bloodhound are novices so I am sure you have this calculated to the Nth degree but it would be interesting to hear what you have done.
The word bladder is used, could i infer a collapsable tank, therefore negating the movement of liquid as the fuel is used?Rapid movement of large amounts of liquid can completely destabilise a vehicle.
None of you at Bloodhound are novices so I am sure you have this calculated to the Nth degree but it would be interesting to hear what you have done.
The jury is out currently on whether or not to fit the foam as in Thrust SSC it caused some issues with blocking filters.
IN51GHT said:
Sometimes there's just no access for a full size spanner......
I hope they are safety shorts.
Chopping up tools to get them to do a job is all part of building a one off.
I understand the issue with parts in the filter but I don't understand how fuel slosh is not an issue?
Paul
Storer said:
IN51GHT said:
Sometimes there's just no access for a full size spanner......
I hope they are safety shorts.Chopping up tools to get them to do a job is all part of building a one off.
I understand the issue with parts in the filter but I don't understand how fuel slosh is not an issue?
Paul
Simply put, without meaning to be patronising to anybody or rambling incoherently too much....
During accel the fuel obviously is forced rearwards (to the right on the images below) to an angle of 63.4degrees, we have Tornado pumps suitable placed to pick this fuel up from the rear section of the main tanks. Transfer pumps in the aux tanks also ensure any fuel held in those is fed to the rear section of the main tank.
During deccel the fuel wants to go into the fwds section of the main tank to an angle of 71.6 degrees, there are trap doors to help reduce this effect which are forced closed by the fuel, any fuel that does find it's way into the fwd section is transferred back into the rear section by another transfer pump.
The two pumps in the main section of the main tank each have two inlets, only one of these four (in total) inlets has to be able to suck fuel. In addition one inlet each pump also has a 3d printed "trumpet" to enable us to scavenge as much fuel as possible from the base of the tank.
One concern of mine was that due to the power of the pumps we'd suck the bag up into the trumpet, so a "ring piece" (yes I really called it that on the drg) is mounted on M3 x 10mm PCB standoffs on the trumpet mouth to prevent this happening.
IN51GHT said:
KarlMac said:
Ring piece. 
Reminds me of the time I did a secondary drain hole and got away with calling it the No. 2 orifice.
The car is littered with them.Reminds me of the time I did a secondary drain hole and got away with calling it the No. 2 orifice.
Guess where the foreskin lives......
KarlMac said:
IN51GHT said:
KarlMac said:
Ring piece.
Reminds me of the time I did a secondary drain hole and got away with calling it the No. 2 orifice.
The car is littered with them.Reminds me of the time I did a secondary drain hole and got away with calling it the No. 2 orifice.
Guess where the foreskin lives......
IN51GHT said:
Afraid as it's covered under the RR agreement that is one of the few areas we cannot disclose.
:-)I'd wager exactly a tiny bit longer than either one or 2 runs (including start, warm up, braking and contingency), depending on the refuelling strategy.
Given the goal, carrying "extra" fuel beyond the required doesn't make much sense.
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