Jerry Pournelle was working in operations research at Boeing. There he came up with the concept for Project Thoraka "Rods from God". The options for bombardment are the same as for normal space warfare: In David Weber 's Honorverse series, kinetic strike weapons are a standard armament of all space navies that conduct orbit-to-ground operations.
They are, however, less vulnerable than manned drop podsas they can decelerate much more quickly, and thus hold their velocity lower in the atmosphere.
A "StarGate" is a sort of orbital fortress defending the planet from invading Teleships. A related issue that deserves a brief mention is the use of spacecraft as weapons against ground targets.
Bodies had been penetrated longitudinally from shoulder to lower abdomen. The State Department, who was generally tasked with interpretation of the treaty, stated internally that such a system would violate the treaty because it permanently stationed nuclear weapons in orbit, and it would be impossible to differentiate offensive from defensive orbiting nuclear weapons.
This means, that it must typically be rated to interrupt the full short-circuit current that can occur on the busbars on the SUPPLY side of the breaker.
That's more like it, now we are getting into tactical nuclear weapons levels of damage. This holds the leaders hostage to the people, ensuring they go through with their side of the bargain. This value is not dependent on any rating of the VFD itself, except in the very few situations where it may have been installed at the motor end of the cable supplying the VFD.
The Warren Ellis comic Global Frequency issue 12, "Harpoon", August featured the threat of kinetic spears, weapons designed to be dropped from satellites, heat up on re-entry, and strike the ground with the force of a tactical nuke, and as hot as the edge of the sun.
Real life concepts and theories During the Vietnam War, there was limited use of the Lazy Dog bomb, a steel projectile shaped like a conventional bomb but only about At this juncture, a reputation for honesty and honor would greatly help the attacker.
If the incoming asteroid is intended to take out a city, even a small deflection quite late would send it over rural or uninhabited territory, greatly reducing damage. Don't forget to consider the application's environmental requirements. This forces the attacker to guard the asteroid for months while it is moved into position, and the logistics costs of doing so are quite high.
Or bio-weapons; a man-made plague that had gotten out of control and all but depopulated the planet. The system would also have to cope with atmospheric heating from re-entry, which could melt non-tungsten components of the weapon.
As the rod approaches periapsis and the target due to gravity, it picks up immense speed until it begins decelerating in the atmosphere and reaches terminal velocity shortly before impact.
Manufacturers also equip with a variety of instruments and indicators inside the variable frequency drive panels, such as voltmeter, ammeter, frequency meter, and power indicator light, alarm lights, running lights, power frequency lights etc, which will monitor the VFD control panels working status in real time.
He turned to leave. A single weapon in space would not upset the [strategic] balance. The phrase "Rods from God" is also used to describe the same concept. Hit-To-Kill Missiles or megawatt-class chemical laser.
The performance of control is evaluated through simulating the whole system in Simulink and the suggested SVM-based DTC controlling system is shown to be superior to other controlling strategies investigated in the literature. There would be no need to deploy missiles, aircraft or other vehicles.
First off, small asteroids are not suitable for use in this manner. The only area where an asteroid wins over a nuclear weapon is in dealing with terminal defenses. Previous article in issue.
Either way, the motor system has to accommodate the VFD output - so the system is designed differently. If the VFD is protected through a circuit breaker mechanical contacts, controlled by some bi-metallic device, or an over-current relaythe contacts of this circuit breaker must be rated to withstand breaking of the highest current that can occur under operation of the VFD.
In science fiction In the mids, popular science interest in orbital mechanics led to a number of science fiction stories which explored their implications.SPACE VECTOR MODULATION BASED INDUCTION MOTOR DRIVE 1.
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54 CHAPTER 4 SPACE VECTOR MODULATION INDUCTION MOTOR DRIVE INTRODUCTION Like most motors, an AC induction motor has a fixed outer portion, called the stator.Download