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originally posted by: TXRabbit
I saw on one of these threads somewhere a map-graphic which showed common refueling routes across the country and luckily, the space above DFW here is a very common one.
Q - would these test-flights use these common lanes for refueling (if they refuel mid-air) so chances of seeing one are higher?
originally posted by: 1947boomer
A couple of weeks ago SonofaSkunk asked what I think is the right question: “What type of fuel would produce a green flame?” I haven’t seen anyone answer, but I think the answer is Diborane.
Diborane is a very energetic fuel that has the advantage that its combustion products are very light and therefore move very fast. When combined with a good oxidizer it can produce a rocket motor with a specific impulse almost as good as Lox-Hydrogen. But, in the liquid form, Diborane is much denser than liquid Hydrogen, so the fuel tanks can be much, much smaller and lighter. This makes it a really good candidate in theory for a single stage to orbit vehicle. Also, it burns with a very distinctive green flame.
Back in the 50s the US had a covert program to use Diborane in aircraft propulsion.
One detail was that the Diborane fuel included a gelling agent in it to stabilize it and make it resistant to premature decomposition.
My conjecture would be that there is a system out there flying around using Diborane fuel for the transatmospheric portion of the flight.
originally posted by: Astr0
Boron gel fuel
Burns a neat green colour
originally posted by: punkinworks10
originally posted by: Tajlakz
a reply to: Zaphod58
The problem is, we don't know what causes inertia, at least officially. Mach's principle--mass out there causes inertia here-- is interesting but pretty vague. We know that inertial mass is equivalent to gravitational mass, for whatever reason.
We need the deep black physics handbook
Inertia is a property of mass, absent external forces a mass at rest will stay at rest , and a mass in motion will stay in motion, it's as simple as that and is adequately demonstrated by interplanetary space craft.