Pendulum based power supply for projectiles
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsKevin Boulais, Wayne L. Hopkins
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Abstract
A field coil stator of an electrical generator is fixed to the fuse body of n explosive projectile within which the rotor of the generator is supported for limited rotation dampened by a pendulum to effectively induce an electrical output from the stator field coils during and after launch of the projectile from an internally rifled gun barrel. The rotor is rotationally isolated from the stator during launch by shock absorbing means to avoid defeat of the pendulum dampening action on the rotor.
Claims17
In combination with a projectile body having an axis about which rotation is induced during launch from an internally rifled barrel, a power source comprising:
- an electrodynamic stator fixed to the projectile body, a magnetic rotor, bearing means mounting the rotor within the projectile body for angular displacement about said axis, pendulum means connected to the rotor for dampening said angular displacement thereof, means for rotationally isolating the rotor from the projectile body during said launch from the barrel and field coil means mounted by the stator for supply of electrical energy generated therein in response to said rotation of the projectile body during and after said launch thereof.
In combination with a projectile body having an axis about which rotation is induced during launch, a power source comprising:
- an electrodynamic stator fixed to the projectile body, a magnetic rotor, bearing means mounting the rotor within the projectile body for angular displacement about said axis, pendulum means connected to the rotor for dampening said angular displacement thereof and electrical converter means connected to the stator for supply of electrical energy induced therein by said rotation of the projectile body relative to the rotor following said launch.
In combination with a projectile body having an axis about which rotation is induced during launch, a rotor within the projectile body, bearing means mounting the rotor for angular displacement about said axis and means for rotational isolation of the rotor from the projectile body during said launch, comprising:
- guide means for limiting axial displacement of the rotor along said axis in response to forces induced during said launch of the projectile body and shock absorbing means for yieldably resisting said axial displacement of the rotor.
Dependencies are inferred from the claim text.