evol escribió:Pero esto, ¿es cierto?
Yo te digo lo que he leído evol. Lo que si te puedo decir, es que un Harrier desprende un calor muy intenso cuando hace ejercicios de rotación a baja altura paralelo al suelo.
Te dejo esto para que lo puedas ver y leer si te interesa el tema.
1. Agency Name -
Office of Naval Research
2. Research Opportunity Title – Flight Deck Thermal Management
3. Program Name – ONR Enterprise Enablers (EPE) Future Naval Capabilities (FNC) Program:
EPE-FY11-01 – Flight Deck Thermal Management
4. Research Opportunity Number - ONR BAA 09-031
5. Response Date -
A) White Paper Due Date: 6 August 2009 by 2:00PM (Eastern Time)
B) Full Proposal Due Date: 23 October 2009 by 2:00PM (Eastern Time)
6. Research Opportunity Description -
The Office of Naval Research (ONR) is interested in receiving proposals for technologies that will
meet the demands for Flight Deck Thermal Management for U.S. Navy Amphibious Ships. A
jointly funded DARPA/ONR program is currently pursuing cooled heat pipe technologies for
arresting the ship thermal issues. Therefore this research opportunity is soliciting alternatives
to heat pipes for arresting the thermal impact from the exhaust plumes of new and
impending aircraft on amphibious ships. Both above deck (one-inch height maximum) and
below deck thermal management systems are being solicited. Preference will be given to
proposed systems that offer both above-deck and below deck options, are cost-effective to
install or maintain, and last the service life of the ship.
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6.1 Background
Amphibious Assault Ships are designed to support Marine expeditionary forces for extended periods of time. These ships resemble smaller aircraft carriers and are capable of supporting Marine aircraft and landing craft. These large warships are designed to
provide a rapid buildup of combat power ashore in the face of opposition. The LHA(R) amphibious assault ship is designed specifically to meet future Navy Marine Corps requirements, able to support the expanded capability of 21st century expeditionary strike platforms such as the MV-22 Osprey helicopter and the F-35B Joint Strike Fighter airplanes.
Deployment of the MV-22 Osprey has caused ship flight deck buckling from the excessive heat impact
from engine exhaust plumes. Navy studies have indicated that repeated deck buckling will cause
deck failure at approximately 40 percent of planned ship life. With the upcoming deployment of
the F-35B STOVL Joint Strike Fighter, it is anticipated that the engine exhaust plumes will have a
severe thermo-mechanical impact on the non-skid surface and flight deck structure of ships. The
MV-22 Osprey and the F-35 are capable of short take-off and vertical landing (STOVL). During
STOVL operations of these aircraft, engine exhaust is angled or positioned downward, directing
the hot exhaust onto the horizontal deck surface, thereby subjecting that surface to higher than
normal temperatures. For the MV-22 the localized region of heating, surrounded by regions of
cooler deck plate and mechanical constraints of the deck structure (longitudinal and transverse
stiffening beams are located under the deck plate) has lead to the observation of thermally induced
buckling which appears after approximately 10 minutes of aircraft operation (while the aircraft is
sitting on the deck turning rotors).
Currently there are no available solutions other than heavy structural modifications to mitigate
deck buckling and thermo-mechanical deck failure. The goal of this effort is to exploit thermal
management technologies that incorporate a thermally and functionally stable non-skid surface,
(which meets Navy requirements for application, safety, and performance) to form an integrated
deck thermal management system (DTMS) that mitigates the thermo-mechanical structural impact
from the MV-22 and F-35B JSF engine exhaust plumes. It is anticipated that the integrated DTMS
will be implemented on Navy LHD 1 and LHA 6 Class amphibious assault ships.
Y esto, por si quieres mas información (copia y pega y te llevara a la pagina informativa).
BAA 09-031
Amendment 0001
Un saludo evol, y sigue con tus miniaturas
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