Canadian officials told their American counterparts that roadblock's to joining Trump's Golden Dome missile defence system had been lifted.

"Defence Minister David McGuinty visited the North American Aerospace Defense Command (NORAD) headquarters in Colorado on July 15 when he met with U.S. Gen. Gregory Guillot. McGuinty noted the government “removed all restrictions on air and missile defence of Canada” but specific details were not provided at the time.

“Defence sources, however, confirmed to the Ottawa Citizen that American officials were told that the February 2005 decision by then-prime minister Paul Martin not to join an existing U.S. missile defence system was no longer valid. At that time, the U.S. wanted Canada to join a largely unproven multi-billion dollar system which was to use ground-based interceptors to destroy incoming missiles aimed at North America.”

  • rbn@sopuli.xyz
    4·
    15 days ago

    For those of you who couldn’t relate to Mach 25 etc. please find below some numbers from Wikipedia. A weapon flying with ~8km / 5mi per second is really insane to me.

    Boost phase, which can last from 3 to 5 minutes. It is shorter for a solid-fuel rocket than for a liquid-propellant rocket. Depending on the trajectory chosen, typical burnout speed is 4 km/s (2.5 mi/s), up to 7.8 km/s (4.8 mi/s). The altitude of the missile at the end of this phase is typically 150 to 400 km (93 to 249 mi).

    Midcourse phase, which lasts approx. 25 minutes, is sub-orbital spaceflight with the flightpath being a part of an ellipse with a vertical major axis. The apogee (halfway through the midcourse phase) is at an altitude of approximately 1,200 km (750 mi). The semi-major axis is between 3,186 and 6,372 km (1,980 and 3,959 mi) and the projection of the flightpath on the Earth’s surface is close to a great circle, though slightly displaced due to earth rotation during the time of flight. In this phase, the missile may release several independent warheads and penetration aids, such as metallic-coated balloons, aluminum chaff, and full-scale warhead decoys.

    Reentry/Terminal phase, which lasts two minutes starting at an altitude of 100 km; 62 mi. At the end of this phase, the missile’s payload will impact the target, with impact at a speed of up to 7 km/s (4.3 mi/s) (for early ICBMs less than 1 km/s (0.62 mi/s)); see also maneuverable reentry vehicle.

    https://en.m.wikipedia.org/wiki/Intercontinental_ballistic_missile