The Handy Man's Sub-Caliber Gun

Computational angular oscillatory motion for a .50 caliber bullet type firing from a helicopter machine gun

The present study investigates the epicyclic pitching and yawing motion phenomenon of spinning symmetric projectiles applying the 6-DOF free flight dynamic simulation modelling for small-yaw flat-fire trajectories. The computational results are compared with the corresponding classical second order linear differential solution. The ammunition will be used is the .50 API M8 bullet tfiring from M...

The Handy Exerciser.

This article was accepted for publication March 9. 1992. T he rehabilitation of upper extremities includes improving function or compensating for disabilities by adapting the environment, providing adapted equipment, or both. For the assessment and treatment of patients with various hand injuries, I devised a simple portable deVice, the Handy Exerciser, from recycled materials available in Zimb...

Introducing the Blackfin Handy Board

The Blackfin Handy Board is a new robot controller inspired by the original MIT Handy Board. The Blackfin Handy Board was developed in collaboration with Analog Devices, Inc., and is based on their Blackfin DSP chip, which combines a 16-bit integer DSP engine with a 32-bit RISC CPU. This paper provides an overview of the architecture of the Blackfin Handy Board, including the hardware design an...

The handy-dandy kitchen device.

In gray tree frogs, the duration of males' mating calls is correlated with enhanced genetic fitness among offspring (A. M. Welch et al., Reports, 19 June, p. 1928). Perhaps the same genes that enable some frogs to sustain longer calls also confer a survival advantage to their young (E. Pennisi, Research News, 19 June, p. 1837). If so, this may be an example of a more general, but underappreciat...

Tree structured fiber optics MANs