It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by Dark Crystalline
It's almost completely impossible to speed up something on the ground to 14k.
Plus, all the passengers would turn to a nice pancake after 14G would hit them around that time. Standard pilots are usually working around 7-9G. The best pilots from Hungary are flying around 11G. And that's the final threshold. And these guys are trained for this. So I don't think so that standard scientists without any proper training just simply traveling with 14k.
Originally posted by Badge01
Yeah, it's not g-force that's a limiter.
Originally posted by Badge01
You'd just accelerate slowly and since there are no sharp turns, presumably, the passengers would never feel the speed.
Originally posted by Badge01
With pneumatic tubes and a minimum of complexity, I'd think problems of friction and breakdown would be the real limiters of any such system.
Originally posted by Badge01
Also, why be so concerned about G-force. There's no need for rapid acceleration or rapid deceleration is there?
Originally posted by Badge01
There's no reason that any such system, however fantastic has to go from Zero to 14,000mph or whatever the top speed is (probably about MACH 3 inside a pneumatic tube, though I have no data) besides doing it gradually.
Originally posted by Badge01
The only acceleration that pilots experience, after taking off, or in diving or climbing, is turning.
Originally posted by Badge01
In addition, please consider doing some research. The fastest G ever experienced was FORTY-SIX G, that's 46G, in a rocket sled and the test pilot John Stapp lived.
aviators and astronauts who are subject to high levels of acceleration ('G'). It is designed to prevent a black-out and g-LOC (g-induced Loss Of Consciousness), due to the blood pooling in the lower part of the body when under G, thus depriving the brain of blood.
A G-suit does not so much increase the G-threshold, but makes it possible to sustain high G longer without excessive physical fatigue. Pilots still need to practice the 'G-straining maneuver' that consists of tensing the abdominal muscles in order to tighten blood vessels so as to reduce blood pooling in the lower body. High G is not comfortable, even with a G-suit. In older fighter aircraft, 6 G was considered high, but with modern fighters 9 or even 10 G can be sustained aerodynamically[citation needed] making the pilot the critical factor in maintaining high maneuverability in close combat.
G-LOC has resulted in a number of fatalities in which the aircraft and crew are lost.[citation needed] There is a need for high-G training and this can be accomplished in a man-rated centrifuge training system.