On Demand Structures – Submarine Launch of UUVs
Navy SBIR NX191 - Topic NX19-002
Special Out of Cycle BAA
Opens: April 12, 2019 - Closes: May 13, 2019 (2:00 PM ET)
AREA(S): Ground/Sea Vehicles
PROGRAM: Virginia Class Submarines
The U.S. Navy (USN) seeks to develop enabling capabilities for launch and
recovery (L&R) operations of Unmanned Underwater Vehicles (UUVs) from
submarines at prescribed submergence conditions. More specifically, there is a
need to launch vehicles of different hull diameters from a standard 21-inch
diameter by 25-foot long tube (ocean interface). To prevent damage to the tube
and vehicles, and to stabilize the vehicle’s orientation throughout the launch
event, a UUV Sabot System (UUVSS) is sought. Vehicles will be launched under
their own power and the UUVSS will separate from the vehicle upon exiting the
tube. The UUVSS can be designed as either expendable or nonexpendable.
The current state of inflatable soft structures technologies can provide unique
solutions to many challenges limiting today’s Undersea Warfare (USW)
operations, capabilities and system designs. Inflatable soft structures have
been successfully developed for DoD, NASA, and industry and are generally
categorized in the following sectors:
Provide concept designs, simulations of initial prototype designs, test results
from laboratory experiments, or other relevant documentation to demonstrate
that the proposed technical solutions are feasible for accomplishing the stated
objectives and meeting the performance parameters set forth in the Description.
Round I: Optimize the UUVSS design including material selections for the soft
structural components, hydraulic layout design and manifolding,
inflation/deflation sequencing, porting to a generic tube seawater pump,
hard-to-soft-goods connections, and environmental factors. Testing of the UUVSS
prototype shall be conducted by the U.S. Navy in accordance with stated
objectives. As stated in the solicitation, the period of performance for Round
I shall not exceed 6 months and the total fixed price shall not exceed
DUAL USE APPLICATIONS: Launch and recovery of commercial watercraft (e.g., Jet
Skis) is an opportunity space for dual use.
A., Cavallaro, P., and Hart, C. “MODAL ANALYSIS AND EXPERIMENTAL TESTING OF
AIR-INFLATED DROP-STITCH FABRIC STRUCTURES USED IN MARINE APPLICATIONS.” , 2017
ASME International Mechanical Engineering Congress and Exposition, Tampa, FL
November 3-9, 2017, IMECE2017-72097. http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2669415
P., Hart, C., and Sadegh, A. “MECHANICS OF AIR-INFLATED DROP-STITCH FABRIC
PANELS SUBJECT TO BENDING LOADS.” , NUWC-NPT Technical Report #12,141, 15
August 2013. https://apps.dtic.mil/dtic/tr/fulltext/u2/a588493.pdf
3. Sadegh, A.
and Cavallaro, P. “MECHANICS OF ENERGY ABSORBABILITY IN PLAIN-WOVEN FABRICS:
AN ANALYTICAL APPROACH.” Journal of Engineered Fibers and Fabrics, vol. 62, pp.
495-509, March 2012. https://www.jeffjournal.org/papers/Volume7/7.1.2Sadegh.pdf
P., Sadegh, A., and Quigley, C. “CONTRIBUTIONS OF STRAIN ENERGY AND PV-WORK ON
THE BENDING BEHAVIOR OF UNCOATED PLAIN-WOVEN FABRIC AIR BEAMS.”, Journal of
Engineered Fibers and Fabrics, Vol 2, Issue 1, 2007 pp. 16-30. https://www.jeffjournal.org/papers/Volume2/Sadegh.pdf
Eugene A., Baumeister III, Theodore, and Sadegh, Ali M.
P., Sadegh, A., Quigley, C. “BENDING BEHAVIOR OF PLAIN-WOVEN FABRIC AIR BEAMS:
FLUID-STRUCTURE INTERACTION APPROACH.”, 2006 ASME International Mechanical
Engineering Congress and Exposition, Chicago, Ill, November 05, 2006,
P., Sadegh, A. and Johnson, M. “MECHANICS OF PLAIN-WOVEN FABRICS FOR INFLATED
STRUCTURES.” Composite Structures Journal, Vol. 61, 2003, pp. 375-393.
C., Cavallaro, P., Johnson, A., and Sadegh, A. “ADVANCES IN FABRIC AND
STRUCTURAL ANALYSES OF PRESSURE INFLATED STRUCTURES.” Conference Proceedings of
the 2003 ASME International Mechanical Engineering Congress and Exposition,
IMECE2003-55060, November 15-21, 2003, Washington, DC. http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1595613
Unmanned Underwater Vehicles; UUV; Launch and Recovery Systems; Soft