The Charles Stark Draper Laboratory, Inc.

William W McFarland, Jr

Jamie M Anderson

Gregory A Kirkos

Donald C Fyler

Mark Drela

Richard T Martorana

Sean George

Brent Appleby

Edward Bergmann

Seth Kessler

Steven Jacobson

Simon Mark Spearing

Peter A Kerrebrock

Thomas G Ogrodnik

A crawler device for traversing in a confined environment, searching victims or inspecting defections, comprises an elongated flexible drive shaft extending along a central axis between a proximal end and a distal end, a motor operatively connected to the drive shaft for turning the drive shaft, and a plurality of segments disposed over the drive shaft. Any two adjacent segments are joined by an articulate joint. Each segment has a wheel assembly including drive wheels. At least two segments further include a gear assembly operatively connecting the wheel assembly to the drive shaft. Turning the drive shaft provides distributed traction force to the drive wheels of the at least two segments, and thereby drives the crawler device.

Crawler device

A flyer assembly is adapted for launching with, transit in, and deployment from an artillery shell having a central void region extending along a ballistic shell axis. The flyer assembly includes a jettisonable shroud and a flyer. The shroud extends along a shroud axis, and is positionable within the central void region with the shroud axis substantially parallel to the shell axis. The flyer is adapted to withstand a launch acceleration force along a flyer axis when in a first state, and to effect aerodynamic flight when in a second state. When in the first state, the flyer is positionable within the shroud with the flyer axis parallel to the shroud axis and the shell axis. The flyer includes a body member disposed about the flyer axis, and a foldable wing assembly mounted to the body member. The wing assembly is configurable in a folded state characterized by a plurality of nested wing segments when the flyer is in the first state. The wing assembly is configurable in an unfolded state characterized by a substantially uninterrupted aerodynamic surface when the flyer is in the second state. The flyer assembly is adapted to be launched from a ballistic delivery system such as an artillery cannon, and can thus reach a target quickly, without expending system energy stored within the flyer. During launch, the flyer is coupled to the shroud so as to maintain a portion of the flyer in tension during an acceleration of the flyer along the flyer axis resulting from the launch. The flyer assembly is adapted to withstand the high g-load and high temperature environments of a cannon launch, and can tolerate a set-back g load of about 16,000 g.

Flyer assembly

Growing community of inventors

Watertown, MA, United States of America

William W McFarland, Jr