In hyper-stable flight, the bullet is flying with the minimum possible coning angle (alpha) of less than 0.1 degree.
Yes, I think I can help with that question, JB. We desire very high launch speeds for our copper bullets simply to maximize their supersonic range, not for mitigating any flight stability issues. We need to work in Mach speeds anyway to minimize air temperature effects.
In aeroballistics, we handle this difference in the velocity effects on aerodynamic pressure q by varying the drag, lift, and moment coefficients as functions of airspeed given in Mach Numbers, and this largely explains the characteristic shape of any drag curve, for example, plotted against Mach speed. Actually, in supersonic flight the aerodynamic pressure q is more nearly proportional to V^1.5, so Sg increases about with about V^0.5, or the square-root of velocity. Since the initial spin-rate is directly proportional to the muzzle velocity MV, increasing the spin-rate by firing at a higher MV does not affect the initial gyroscopic stability (Sg), at least theoretically for a subsonic bullet. The overturning moment M is modeled as inherently proportional to V^2 through its direct dependence on aerodynamic pressure q = (rho/2)V^2, which is a subsonic relationship. The gyroscopic stability (Sg) of the flying bullet at any time in its flight is basically a function of its current spin-rate squared (P^2) divided by a function of its current aerodynamic overturning moment (4 M). He believes fares will be highly competitive, priced at around $167, a similar price to budget airfares from Canberra to Melbourne.Not quite true, Flyer. G-Force experience:Īccording to Mr Modine, passengers will experience relatively small G-Forces but will be not be able to stand for the duration of their trip because of the vertical position. Most injuries during travel are caused by human error or adverse weather conditions’,he said. ‘It will also be the safest form of transport by far. ‘It may seem like something out of science fiction but the technology is now available for travel through airless tubes at 6,400km/h to become not only a reality, but a daily occurrence for passengers and cargo.’ Hyper Chariot’s President and Hollywood actor Matthew Modine, said: ‘With Hyper Chariot, we are aiming to bring nothing less than space travel on Earth, connecting cities and even countries in a way never before possible.’ Sci-fi to become a reality: It will also have the capacity to accelerate from 0 to 1600 km/h in just 60 seconds. Revolution in transportation:īut with Hyper Chariot’s futuristic bullet train – it could take less than 10 minutes, completely revolutionising the Australian commute forever. The 286km journey from Melbourne to Canberra is normally a seven-hour drive, a one-hour flight and a 16-hour train ride.
The ambitious super-shuttle concept will use roller coaster-type technology to catapult car-sized capsules through airless concrete tubes at five times the speed of sound – and it would only cost $167 for a ticket.Īccording to Hyper Chariot founders, it will be testing super speeds of up to 6400 km/h within the next ten years, and believes by 2040 ten-minute commutes across the country will be a daily occurrence. The creators of the super train, Hyper Chariot, claim it will one day carry passengers at a speed of 6400 km/h – meaning it could travel from Sydney to Auckland and back within the space of an hour. A new ‘hyper bullet train’ which could transport commuters from Canberra to Melbourne in only 10 minutes may be possible in a matter of years.
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