摘要:
A heat exchanger for cooling a fluid in a flow path and containing a component liable to phase change below a temperature thereof comprises a series of tubes for the passage of coolant and an injector for introducing an anti-freeze component into the fluid in the flow path. The injector is an antifreeze injector, such as a methanol injector arranged for connection to a source of methanol. The antifreeze injector comprises a plurality of injection portions and is arranged to inject a more concentrated antifreeze at a first injection portion in a first region of air flow and a more water-diluted antifreeze at a second injection portion which is more upstream than the first injection portion at a second region of air flow that is warmer than the first region.
摘要:
Disclosed are methods, systems, and non-transitory computer-readable medium for supersonic flight entry/exit management. For instance, the method may include determining whether a transition between supersonic and subsonic flight is approaching; and in response to determining the transition between subsonic and supersonic flight is approaching, performing a supersonic flight entry/exit process. The supersonic flight entry/exit process may include: obtaining center of gravity (CG) information for the vehicle, drag information for the vehicle, and a planned trajectory of the vehicle (trajectory data); performing an analysis of the trajectory data to determine whether the planned trajectory is safe and consistent; based on a result of the analysis, adjusting the planned trajectory or confirming the planned trajectory of the vehicle; and based on the adjusted planned trajectory or the confirmed planned trajectory of the vehicle, generating actuator instructions to execute the adjusted planned trajectory or the confirmed planned trajectory.
摘要:
A method, apparatus, and system for mitigating undesired effects of a vehicle traveling at a speed greater than a critical Mach number for the vehicle. Ultraviolet energy is generated using a plurality of ultraviolet energy sources associated with an interior structure of the vehicle that travels at the speed greater than the critical Mach number for the vehicle. The ultraviolet energy is transported from the plurality of ultraviolet energy sources past an exterior of the vehicle around a selected location of the vehicle. A plasma is created around the selected location to mitigate the undesired effects of the vehicle traveling at the speed greater than the critical Mach number for the vehicle.
摘要:
A method (1000) of assembly of a thermal insulation system (200) for an aircraft (100, 600) that includes a high temperature component (106, 602) and a temperature sensitive component (206), includes coupling (1002) a first plurality of magnets (208) to an interior surface (202) of a carrier (201), thermally coupling (1004) the high temperature component to an exterior surface (222) of the carrier, and coupling (1006) a second plurality of magnets (209) to an exterior surface (210) of a container (204). The first plurality of magnets is configured to generate a first magnetic field (216), and the second plurality of magnets is configured to generate a second magnetic field (218) oriented opposite to the first magnetic field. The temperature sensitive component is thermally coupled (1008) to an interior surface (220) of the container, and the container is positioned (1010) within an interior space (214) of the carrier. The interior space is defined by the interior surface of the carrier.
摘要:
A method of controlling a magnitude of a sonic boom caused by off-design-condition operation of a supersonic aircraft at supersonic speeds includes, but is not limited to the step of operating the supersonic aircraft at supersonic speeds and at an off-design-condition. The supersonic aircraft has a pair of swept wings having a plurality of composite plies oriented at an angle such that an axis of greatest stiffness is non-parallel with respect to a rear spar of each wing of the pair of swept wings. The method further includes, but is not limited to the step of reducing wing twist caused by operation of the supersonic aircraft at supersonic speeds at the off-design condition with the composite plies. The method still further includes, but is not limited to, minimizing the magnitude of the sonic boom through reduction of wing twist.
摘要:
A method of providing an aircraft having a fuselage and a wing configured for extensive laminar flow at design cruise conditions, the method characterized by a) providing wing biconvex-type airfoils having values of thickness, chord and shape along the wing span which provide substantially optimal aircraft range at design cruise conditions, considering the influences of wing drag and wing weight; b) providing wing leading edges, which are configured to effect laminar flow; c) providing fuselage and wing contours which, in combination, produce reduced total wave drag and produce extensive areas of laminar boundary layer flow on the wing; and d) providing wing sweep angularity that facilitates provision of a), b) and c).
摘要:
An air vehicle (100, 102) having a bilaterally asymmetric configuration may include a body (104) having a longitudinal axis (106). The air vehicle (100, 102) may further include longitudinally offset engine nacelles (234, 236), asymmetrically lengthened engine nacelles (232), and/or longitudinally offset protruding aerodynamic surfaces (190). (Fig. 1)