The present disclosure describes ventilation systems having a reduced aerodynamic footprint. The vents in the ventilation systems are actuated with Shape Memory Alloys that actuate the vents on an as needed basis while effectively sealing the vents when not in operation. The present disclosure further describes a ventilation system in an aircraft nacelle that helps mitigate bowed rotors by cooling down the engine nacelle faster or by helping create a uniform temperature distribution in the nacelle. In various embodiments, the ventilation system comprises vents and fans embedded in the vents.

A vehicle front section structure including: a horn, the horn being provided at a vehicle front section; a bumper absorber, the bumper absorber being provided at a vehicle lower side of the horn, and the bumper absorber being capable of absorbing impact energy due to an impact load that has been input from a vehicle front side; and a grill, the grill being disposed at a vehicle lower side of the bumper absorber at a bumper cover configuring a design at a vehicle front end, and an opening portion being formed in the grill, wherein the bumper absorber is configured to include: a through-hole, the through-hole penetrating along a vehicle up-down direction, and an elastic body, the elastic body being is provided within the through-hole, and the elastic body having a hollow shape penetrating along the vehicle up-down direction.

A grill bracket, a rear end portion of which is fixed to a shroud, is provided below a fascia upper member which is provided in front of a bonnet (engine hood). A front-side portion of the grill bracket is configured as an impact absorbing structure (a rib structure with ribs, for example) which extends forward along a back face of the fascia upper member. A front end portion of the impact absorbing structure is configured to be bent downward. Impact absorption for a relatively-small load which is applied from an upward side is attained by downward-bending deformation of the grill bracket (the front-side portion). Impact absorption for a relatively-large load which is applied from a forward side is attained by a bracing operation as well as downward-bending deformation of the front-side portion.

A bumper assembly includes a bumper cover including one or more air deflectors extending inward from the bumper cover, a bumper reinforcement beam positioned rearward of the bumper cover, and a low speed bumper energy absorber that extends along a front surface of the bumper reinforcement beam between the bumper cover and the bumper reinforcement beam. The one or more air deflectors extend from the bumper cover toward the low speed bumper energy absorber at an oblique angle relative to a front face of the low speed bumper energy absorber to substantially isolate a portion of the bumper assembly from air leakage through the bumper assembly.

A front part structure of a vehicle is provided, that includes a bumper fascia disposed at a front part of the vehicle and having an upper end portion opposing a leading edge of a hood, a shroud disposed rearward from the bumper fascia, and configured to lead cooling air to a given device, a coupling member provided with a first portion coupled to the shroud and a second portion that is a portion located forward of the first portion and below the upper end portion of the bumper fascia, and an impact absorbing member provided with a support part that supports the upper end portion and intervenes between the upper end portion of the bumper fascia and the second portion of the coupling member, and a fixed part that is disposed below the support part and is fixed to the second portion.

A vehicle includes an air dam assembly disposed at a first end of the vehicle body that is configured to control an airflow between the vehicle body and a road surface from outside the vehicle to the under-hood compartment of the vehicle. The air dam assembly includes a housing having a top wall and a bottom wall defining a forward wall and an opposing rearward wall therebetween. A plurality of flexible pleats are disposed on the forward wall of the of the air dam housing.

To improve protection performance for a pedestrian colliding with a front portion of a traveling vehicle, a front bumper includes a bumper fascia, a front grill, and a decorative member. The decorative member includes a left part extending along a left edge portion of an opening, and a right part extending along a right edge portion of the opening. A left end portion of a bumper reinforcement is positioned on a right side of the left part of the decorative member. A right end portion of the bumper reinforcement is positioned on a left side of the right part of the decorative member.

To suppress deformation of a vehicle cabin by efficiently absorbing an impact load obliquely from a vehicle front side, a vehicle-body front structure includes an upper-side cross member, a lower-side cross member, upper-side impact absorption members that support respective ones of both vehicle-width-direction sides of the upper-side cross member, and lower-side impact absorption members that support respective ones of both vehicle-width-direction sides of the lower-side cross member. The upper-side impact absorption members and the lower-side impact absorption members are each positioned farther on a vehicle-width-direction outer side at a position farther on a vehicle front side.

To suppress damage on a bonnet at light collision, a vehicle-body structure includes rear-portion crush cans that perform compressive deformation when a first predetermined load is applied, and front-portion crush cans that perform compressive deformation when a second predetermined load smaller than the first predetermined load is applied. A front portion of a bonnet is positioned on a vehicle rear side of front portions of the rear-portion crush cans.

To improve protection performance for a pedestrian colliding with a front portion of a traveling vehicle, a front bumper includes a bumper fascia, a front grill, and decorative member. The disposition position and shape of a bumper reinforcement are set such that the bumper reinforcement is positioned inside an opening of the bumper fascia in a front view. Cross members are arranged at higher and lower positions than the decorative member and extend toward a vehicle-width-direction outer side beyond the bumper reinforcement.