faulty fuel sensor - oh puleeze

On Thu, 14 Jul 2005 13:14:22 -0700, wrote:


My recollection was that the turbopump used the engery in the expanding fuel
to pump the fuel. If the fuel runs out doesn't the turbopump stop pumping?

Mike
MU-2

There are a number of differnet ways that turbopumps
on rockets can be powered, what you are describing is an expander cycle,
the SSME is a staged combustion pump.

The pump is preburinign some small amount of fule to spin the turbine,
if I recall it's about 150,000 HP per pump per engine.
This is a lot of power.


The F-1 turbines for the engines on the Saturn V first stage each
produced, nominally, about 54,000 horses. Times five that is a huge
amout of power that needs to be harnesed. 7.6 Million pounds of
thrust was the result of that. Your Garretts should stand back in
awe.

Mike Weller

On Thu, 14 Jul 2005 19:22:33 GMT, Judah wrote:

But the regs say it only has to be accurate when empty!

You haven't flown a Mooney have you?

Time and fuel amount are your friends.

Mike Weller

"Mike Weller" wrote in message
news:1121443598.642f01f4298df066c5b035efb54d5426@o nlynews...
On Thu, 14 Jul 2005 13:14:22 -0700, wrote:


My recollection was that the turbopump used the engery in the expanding
fuel
to pump the fuel. If the fuel runs out doesn't the turbopump stop
pumping?

Mike
MU-2

There are a number of differnet ways that turbopumps
on rockets can be powered, what you are describing is an expander cycle,
the SSME is a staged combustion pump.

The pump is preburinign some small amount of fule to spin the turbine,
if I recall it's about 150,000 HP per pump per engine.
This is a lot of power.


The F-1 turbines for the engines on the Saturn V first stage each
produced, nominally, about 54,000 horses. Times five that is a huge
amout of power that needs to be harnesed. 7.6 Million pounds of
thrust was the result of that. Your Garretts should stand back in
awe.

Mike Weller


I can't afford to pay for 15 tons of fuel and O2 per second anyway.

Mike
MU-2

"Mike Rapoport" wrote in message
ink.net...



I can't afford to pay for 15 tons of fuel and O2 per second anyway.

Mike
MU-2


Uh Mike, you are paying for it. So am I

Allen

George Patterson wrote in
news:15FBe.6001$Om4.2374@trndny07:

Judah wrote:

But the regs say it only has to be accurate when empty!

Wrong.

George Patterson
Why do men's hearts beat faster, knees get weak, throats become
dry, and they think irrationally when a woman wears leather
clothing? Because she smells like a new truck.


I know. It was a joke. We've had that conversation already.

Yeah but all 100MM of us taxpayers are paying. If I owned a Saturn V, I
could only split the fuel three ways.

Mike
MU-2


"Allen" wrote in message
. ..

"Mike Rapoport" wrote in message
ink.net...



I can't afford to pay for 15 tons of fuel and O2 per second anyway.

Mike
MU-2


Uh Mike, you are paying for it. So am I

Allen