DARPA calls for help in designing submersible aircraft

Vehicle would be used to secretly drop military teams along coastal
locations -- Sharon Gaudin

October 9, 2008 (Computerworld) It may sound like something out of a
James Bond movie, but the U.S. military's Defense Advanced Research
Projects Agency is putting out the call for researchers to come up with
a design for a submersible aircraft.

Yup, you read it right. DARPA, a research branch of the U.S. Department
of Defense, is looking for someone to prove that a vehicle can be built
that will fly, as well as maneuver underwater.

The call for research went out earlier this month, and initial proposals
are due by 4 p.m. EST on Dec. 1.

As an agency, DARPA is no stranger to working on and putting out calls
for forward-looking technology.

Late in July, the California Institute of Technology announced that
researchers there had developed a high-resolution microscope, a project
funded in part by DARPA, that is small enough to sit on a computer chip.
The tiny microscope has the magnifying power of a top-quality optical
microscope and is designed so scientists can use it in the field to
analyze blood samples for malaria or to check water supplies for pathogens.

And DARPA is also behind the annual Urban Challenge, a 60-mile race
among up to 20 driverless, self-guided vehicles. The DoD hopes the event
-- and the research that goes into getting the cars ready -- will give
them new technology to use on the battlefield.

In its latest call for technology, the agency said it is looking to
"maintain its tactical advantage for future coastal insertion missions;
DARPA is interested in exploring radical new technologies that can
provide a game changing DoD capability for inserting small teams,
clandestinely, along coastal locations."

In a statement, DARPA said that "prior attempts to demonstrate a vehicle
with the maneuverability of both a submersible and an aircraft have
primarily explored approaches that would endow flight capability to
platforms that were largely optimized for underwater operations." Those
efforts, the agency said, "have been unsuccessful largely because the
design requirements for a submersible and an aircraft are diametrically
opposed."

DARPA noted that a submersible aircraft requires the speed and range of
an aircraft and the loiter capabilities of a boat; along with the
stealth of a submarine.

The agency is first looking for conceptual design proposals. The
proposals must also identify technical challenges and outline models or
experiments that will show how those challenges can be overcome.