SBIR-STTR Award

Expendable Glider for Oceanographic Research
Award last edited on: 11/6/2018

Sponsored Program
STTR
Awarding Agency
DOD : Navy
Total Award Amount
$597,788
Award Phase
2
Solicitation Topic Code
N08-T016
Principal Investigator
Douglas E Humphreys

Company Information

Vehicle Control Technologies Inc

1902 Campus Commons Drive Suite 120
Reston, VA 20191
   (703) 620-0703
   info@vctinc.com
   www.vctinc.com

Research Institution

University of Massachusetts - Dartmouth

Phase I

Contract Number: N00014-08-M-0269
Start Date: 6/23/2008    Completed: 4/22/2009
Phase I year
2008
Phase I Amount
$100,000
The proposed Glider design concept is based on quantitative tradeoffs between cost and performance. Existing glider technology has been analyzed, and two significant design details have led to a simplified design that will result in a compact, less expensive glider and a simplified delivery/launching mechanism. Using its high fidelity simulation and design tools, VCT has gained important new insights into glider design for performance. This has led to tradeoffs among wing parameters, vertical fin size, Ycg shift and rudder deflection for optimizing turn performance. Combining these discoveries has led to the design of the proposed wingless glider that can achieve equal or better turn performance of the legacy winged gliders. Legacy gliders use a weight-shift method pitch, roll and heading control. This increases the internal complexity of the system as it requires the weight to be mobile, and also increases the size of the pressure housing, effectively increasing the gliders size, weight, buoyancy required, and ultimately, cost. The low-cost expendable glider we are proposing would use a lift-up mast to transmit information. The mast is raised using the same actuator that operates the variable buoyancy engine, but at an extended stroke position.

Benefit:
The technology solution that is proposed here will allow for expendable ocean gliders that will not require recovery when the mission is completed. This eliminates the need for a surface vessel for recovery, and also for launch if they are air-dropped. The total cost for deployment to the Navy is dramatically reduced due to the gliders mass-production design.

Keywords:
Expendable Glider Oceanographic Research Manufacturing Processes Wingless Glider Simplified Antenna Extension, Expendable Glider Oceanographic Research Manufacturing Processes Wingless Glider Simplified Antenna Extension

Phase II

Contract Number: N00014-09-C-0527
Start Date: 8/25/2009    Completed: 2/28/2011
Phase II year
2009
Phase II Amount
$497,788
One of the main obstacles to the adoption of underwater gliders for regular use in military operations is their costs, both the per-unit cost and the cost of recovering them at the end of a mission. STTR N08-016 aims to develop an expendable underwater glider (xGlider) that has a per-unit cost of less than $50,000. The Phase I effort produced the preliminary design of an xGlider the met the three major design goals: Has a per-unit production cost of less than $50k o Actual per-unit manufacturing cost is estimated to be $49,327. Is Expendable o Low per-unit cost makes recovery of the vehicle after use optional. Has equal or better performance than legacy glider systems o Baseline xGlider outperforms legacy systems in speed and turning diameter. This proposal outlines the planned work for Phase II of STTR N08-016 which includes the detailed hydrodynamic design, the preliminary and detail guidance and control (G&C) system design, fabrication, integration, and extensive testing and operation of the prototype xGlider.

Benefit:
If the Expendable glider makes its cost and performance objectives, it will revolutionize the glider industry by making available low cost gliders for several critical Navy missions such as MCM (UCCI program) and ASW (PLUS program). The availability of an expendable glider will generate a market for mass production of gliders, which will accelerate the lowering of system costs for both gliders and UUVs.

Keywords:
Buoyancy Engine, VCT, G&C, UUV, Glider