Up 弾道ミサイル原潜 (SSBN) 作成: 2023-08-10
更新: 2023-08-10

  • 用語
    • 弾道ミサイル原潜 (戦略ミサイル原子力潜水艦, SSBN,
      　Strategic Submarine Ballistic Nuclear, )
    • 潜水艦発射弾道ミサイル (SLBM, Submarine-Launched Ballistic Missile)
    • cold launch


初出不明 (引用しているWebサイトが複数あり，それから引用)



坂本明 (2017), p.207 から引用：





FictionTalk : " What Is An Intercontinental Ballistic Missile? ICBMs (Explained)", 2022. から引用：




How do they work?
On a very basic level, ICBM’s work by launching from a ground-based (or submarine-based) launcher, reaching suborbital space-flight at about 620 miles (1,000 kilometers), and eventually releasing their payloads to re-enter Earth’s atmosphere and plummet towards their target back on Earth.
ICBM’s are multi-phase rockets that go through a sequence of events prior to the rocket reaching its target.
Those events can be divided in three phases.

The Boost Phase
During this phase of the missile trajectory, the rockets get the missile airborne.
It usually lasts somewhere around 3 to 5 minutes depending on the type of rocket fuel being used.
It can use two types of fuel: solid-fuel or liquid propellant (the time is always shorter for the solid fuel rocket).
There is no difference in the distance that the different fuels can send their payloads.
Also depending on the trajectory chosen, typical burnout speed is 4 〜 7.8 km/s.
Altitude at the end of this phase is typically 150 to 400 km.

Midcourse Phase
This phase lasts around 10-25 minutes depending on the trajectory of the ICBM.
Here, the rocket reaches space (sub-orbital spaceflight).
The flightpath represents a part of an ellipse with a vertical major axis.
At this point the rocket is going to be moving incredibly fast, somewhere around 25,000-27,000 km/h (7〜7.5 km/s).
Halfway through the midcourse phase the rocket will fly at an altitude of 1,200 km and by the ending phase it will reach altitudes between 3,000-6000 km .
This is where the missile will reach it’s fastest velocity.

Terminal phase
Starting at the altitude of 100 km, the last phase is where the rocket reenters the Atmosphere.
The nose cone section carrying the warhead separates from the final rocket booster and drops back to Earth.
At this point the warhead is only minutes from the target, and it is also impossible to use any counter-measures to stop it from finishing its path.