Abstract: An all-composite assembly such as a composite laminate aircraft empennage has vertical and horizontal stabilizers with differing sets of interlaminar fracture toughnesses and differing stiffnesses to improve flight characteristics. Composite laminate skins are bonded to unitized and stiffened understructure to reduce weight and improve damage containment.

Abstract: The present invention includes: a slat 3; and a position adjustment mechanism that adjusts an attachment position of the slat 3 to a main wing 1 by causing the slat 3 to swing, the position adjustment mechanism including: a pivot shaft S1 as a center of the swing motion of the slat 3; and a driving shaft S2 that is rotatably supported on a rail 12, and induces the swing motion of the slat 3. The driving shaft S2 includes: a main shaft 30 that causes the slat 3 to swing by acting thereon; an inner-side eccentric bushing 31 that is fixed to the main shaft 30, and eccentric with respect to the main shaft 30; and an outer-side eccentric bushing 32 that is eccentric with respect to the inner-side eccentric bushing 31, rotatably arranged therearound, and supported rotatably with respect to the rail 12.

Abstract: Systems and methods for configuring a direct lift control system of a vehicle are disclosed. An example system provided herein includes a spoiler coupled to an aircraft, a direct lift control schedule to generate a plurality of spoiler deflection commands and a controller to control an actuator coupled to the spoiler to actuate the spoiler based on the spoiler deflection commands to modulate lift of the aircraft without using a short-period pitch control.

Abstract: A control system for an aircraft high lift device includes a threshold setting unit configured to output one of a plurality of configuration change thresholds as an active output threshold, a threshold deactivation unit coupled to the threshold setting unit and configured to temporarily increase the active output threshold to a deactivation value, a configuration setting unit coupled to the threshold deactivation unit and configured to set the aircraft high lift device from a first configuration to a second configuration, if a measured value of an angle-of-attack of the aircraft exceeds the active output threshold, and a threshold control unit configured to control the threshold deactivation unit to temporarily increase the active output threshold to the deactivation value while the aircraft high lift device is mechanically moving from a first configuration to a second configuration.

Abstract: A pilot control interface and method are described for selective control of an autopilot system by a pilot of an aircraft in which the autopilot system is installed. The pilot control interface includes a passive network that is selectively switchable between a plurality of states across an output interface that is made up of no more than two conductors that are in electrical communication with the autopilot system. Modification of a current autopilot flight mode can be performed incrementally or continuously based on respective momentary and continuous pilot input actuations.

Abstract: The invention relates to fiber reinforcement for making an elongate mechanical part (10) out of composite material having a lug (14) at at least one end for receiving a pin for making a pivot connection with another part, the fiber reinforcement being made from a central fiber structure (106; 106?) for forming a core that is obtained by three-dimensional weaving, from a peripheral fiber structure (16; 16?) that is to form a belt surrounding the central structure so as to form at least one empty cylindrical space in the lug of the part, and from at least one annular fiber structure (112; 112?; 112?) that is to form a ring that is formed inside the empty space provided between the central structure and the peripheral structure.

Abstract: A main landing gear bay 15 which is formed inward of a fuselage 11 of an aircraft 10 from an opening portion provided in a surface of the fuselage 11 so as to store a main landing gear 13 of the aircraft 10, the main landing gear bay 15 including inclined regions 16 and 17 that are continuous from a rim of the opening portion to the fuselage 11 surface in an airframe axis direction X of the aircraft 10, wherein the inclined regions 16 and 17 are formed so as to have a larger depth toward the rim of the opening portion. Since the inclined regions 16 and 17 are formed so as to have a larger depth toward the rim of the opening portion, the aerodynamic drag acting on the main landing gear bay can be reduced. Accordingly, the fuel consumption of the aircraft can be improved.

Abstract: An aircraft wheel which is provided with rotational driving unit (110). The driving unit comprises a driving ring (111) which is associated with structure (112) for attaching the ring to a rim of the wheel. The attachment structure is fixed to treads (119) of the rim which further serve to retain removable brake blocks (121) with which the rim is provided.

Abstract: A rotor assembly includes a rotor hub rotatable about a central axis including a plurality of rotor hub arms and blade yokes, each blade yoke including yoke arms located at opposing lateral sides of a corresponding one of the rotor hub arms to which the rotor hub arm is operably connected. The rotor assembly further includes blade retention bearings, each blade retention bearing being a single-element bearing disposed at a corresponding one of the rotor hub arms and which is supportive of a corresponding one of the blade yokes. Rotor blades are secured to corresponding ones of the blade yokes.

Abstract: A control member (10) having a collective pitch lever (20) extending from a first end (21) to a second end (22). Said control member (10) has a handle (30) for controlling a yaw movement control device, said handle (30) being secured to an inner ring (40) that is guided to pivot about a second axis (AXLAC) by an outer ring (50) secured to said second end (22), said inner ring (40) being constrained to move together with said outer ring (50) and the lever (20) in pivoting about said first axis (AXCOL).

Abstract: A rotor blade (1) with an exterior shell (20) extending in a span and chord wise direction and at least one control flap (4) extending in essentially span wise direction to said exterior shell (20). Load transmission means inside said blade chamber (7) comprise piling type housings (13) respectively with one actuator (8, 9), one flap drive (10, 11) and a longitudinal girder (15). Said at least one piling type housing (13) comprises at least one upper strap (14) and at least one lower strap (14) oriented essentially in said chord direction in between said longitudinal girder (15) on the one side and the support for said at least one actuator (8, 9) on the other side, each of said upper and lower straps (14) being symmetric aligned in chord direction relative to at least two pivot bearings (35, 36). Said upper and lower straps (14) are stiff in chord direction and flexible in span wise direction.

Abstract: A plurality of UAVs may be operated in a fleet, each of the UAVs in the fleet being configured to work collectively to achieve one or more functions, such as to create a display or implement an antenna array. The fleet of UAVs may operate individually and/or may be coupled to one another to operate as a collective unit. In some embodiments, one or more UAVs in the fleet may operate individually, while two or more UAVs in the fleet may be connected to one another. In such embodiments, the individual UAVs and the connected UAVs may together comprise the fleet.

Abstract: This disclosure is directed to monitoring a noise signature of an unmanned aerial vehicle (UAV) and varying the speed of the motors of the UAV to reduce unwanted sound (i.e., noise) of the UAV based on the noise signature. The noise signature of the UAV may be measured by an audio sensor of a vibration sensor, and feedback may be provided to the UAV. The UAV may generate noise during flight, which may include a number of noise components such as tonal noise (e.g., a whining noise such as a whistle of a kettle at full boil) and broadband noise (e.g., a complex mixture of sounds of different frequencies, such as the sound of ocean surf). By measuring the noise signature of the UAV, and varying the motor revolutions per minute (RPM) during flight operations, the UAV may reduce tonal components of the UAV noise signature.

Abstract: The fuselage of an aircraft comprises a floor structure, a roof structure, a first lateral side structure, a second lateral side structure, and a middle structure. The floor structure, the roof structure, the first lateral side structure, and the second lateral side structure define a fuselage space between them. The middle structure spans at least part way between the floor structure and the roof structure, and runs between the first lateral side structure and the second lateral side structure such that the middle structure partitions the fuselage space into an occupant space and a cargo space. A seat for a pilot is disposed in the occupant space lateral to a portion of the middle structure and a portion of the cargo space.

Abstract: An aircraft galley power and control system is disclosed having a plurality of electrical appliances within a monument, the galley control system including a control panel removed from the electrical appliances that include controls for operating each of the electrical appliances, The galley also includes a galley controller interface for receiving commands from a display screen on the control panel and communicating the commands to the electrical appliances.

Abstract: A method and apparatus for disposing of waste in an aircraft. An apparatus comprises a receptacle system. The receptacle system is configured to hold the waste. The receptacle system is located in a space between a galley and a bulkhead of the aircraft.

Abstract: Methods provide for a configurable tray table. According to aspects of the disclosure, a tray rail is rotatable connected to a frame of a support assembly. Three tray table segments create a tray assembly having a multi-planar configuration and is coupled to the tray rail. A first tray table segment is pivotally connected to a second tray table segment via a first hinged longitudinal edge of the second tray table segment. A third tray table segment is pivotally connected to the second tray table segment along a second hinged longitudinal edge that is parallel to the first hinged longitudinal edge.

Abstract: A wind turbine blade is disclosed. The blade includes a heating mat for generating heat. The heating mat is mounted at an outer surface of the blade. The heating mat includes a first section with a first end section and a second section with a second end section. The first end section and the second end section are electrically connectable to a respective power terminal for supplying power to the heating mat. The second end section defines an opposite end section of the heating mat in a longitudinal direction of the heating mat with respect to the first end section. The first section and the second section run along the surface of the blade in one or more loops from the first end section to the second end section.

Abstract: A pressure relief latch includes a first housing, the first housing having a handle pivotably attached, and a safety release with a hook. A roller support is slidingly engaged with the first housing and linked to the handle. The roller support has a locking pin, and has a roller attached to one end. A second housing includes a spring and a keeper extending away from the spring. When the latch is in use, the keeper of the second housing and the roller of the first housing are engaged when the latch is in the closed position. The hook of the safety release engages the locking pin of the roller support when the latch is in the closed position, preventing upward rotation of the handle. When the safety release is actuated, the hook disengages the locking pin. Upward rotation of the handle causes the roller and the keeper to disengage.

Abstract: A method of synchronizing engines of an airplane in accordance with at least one activation logic (10, 10?) defining a deactivated state (20), a primed state (22), and at least one activated state (16, 18), and comprising: passing (32) synchronization from the deactivated state to the primed state when a pilot of the airplane issues an activation order; passing (36) synchronization from the primed state to the activated state when at least certain safety and/or activation conditions are satisfied; and passing (24, 34) synchronization from the activated or primed state to the deactivated state when the pilot issues a deactivation order or whenever at least some of the safety conditions are not satisfied.

Abstract: The invention relates to a device for cooling a component (2) in a vehicle by means of a cooling air flow (4), wherein the device has at least one air inlet (11) and at least one air outlet (12), which are arranged such that the cooling air flow (4) is adjusted from the air inlet (11) to the air outlet (12) as a result of a difference in pressure produced during movement of the vehicle as a result of varying high flow velocities of the ambient air. The invention also relates to a method for cooling a component (2) in a vehicle by means of an above-named device.

Abstract: A device is disclosed for preventing gases and/or fluids emanating from a wing box of an aircraft from passing to an aircraft fuselage cell situated underneath it. The device comprises at least one sheet-like material positioned below or above the wing box. The sheet-like material is preferably made of a woven fabric comprising aramid fibers or the like, which fabric in order to ensure the required seal vis-à-vis liquid and/or gaseous substances, in particular vis-à-vis fuels, has been impregnated or soaked with an epichlorohydrin elastomer compound or with some other elastomer, for example a rubber compound or the like.

Abstract: An assembly includes an actuator assembly having a housing, a piston positioned at least partially within the housing and movable relative to the housing for an overall actuation stroke, a first spring operatively engaged between the piston and the housing to provide actuation biasing force therebetween, a second spring operatively engaged with the piston, and a spring guide. The spring guide is operatively engaged with the first spring and operatively engaged with the piston via a sliding connection. The spring guide is further configured to limit a stroke of the first spring such that the first spring contributes actuation biasing force between the piston and the housing for only a fractional portion of the overall actuation stroke of the piston.

Abstract: A method of calculating and displaying the true airspeed of a rotorcraft. At least one omnidirectional airspeed sensor is installed at the top of a tail fin of the rotorcraft. The true airspeed of the rotorcraft flying at speeds that are lower than or equal to at least one airspeed threshold of the rotorcraft is calculated by correcting the measurements supplied by the airspeed sensor installed at the top of the tail fin as a function of the effects produced by the air stream generated by rotation of the main rotor of the rotorcraft on the characteristics of the speed of the air stream measured by the tail fin airspeed sensor. For this purpose, a correction rule calibrated in test flight is advantageously applied to correct the measurements supplied by the airspeed sensor installed at the top of the tail fin.

Abstract: An overheat sensor system is provided. A controller may create an aircraft temperature profile and may compare temperature sensor data to the profile. The system may provide an output indicating temperatures or fires.

Abstract: A canisterized satellite dispenser includes one or more of: a pair of guide rails that eliminate the requirement of a rectangular profile for the satellite; a preload system that secures the canisterized satellite during transport and launch, and releases to deploy the canisterized satellite; a constant-force spring to provide a uniform and predictable dispensing force; an external rectangular profile in each dimension; and internal support surfaces that simplify the design of canisterized satellites, particularly those with deployable components. Each canisterized satellite includes a pair of opposing flanges on a lower portion of the satellite that ride in a channel formed by the dispenser's guide rails and restraining flanges; no other support constraints are imposed. During travel and launch, the satellite flanges are held against the restraining flanges, rigidly fixing the satellite to the dispenser until the satellite is deployed.

Abstract: The invention relates to a method for filling a receptacle (200) with carbon nanotubes from another receptacle (106) whereby the CNTs are passed from one receptacle to the other by means of a coupling (300) comprising a double-valve device (30), each valve being coupled to one of the receptacles, the valves (31, 32) closing independently and tightly and being openable only when they are coupled to one another.

Abstract: A device that has a device body defining an opening at one end thereof, a storage chamber within the device body for storing multiple doses of a substance therein, and a sliding stopper, sealing engageable with the device body, through which the chamber is filled. The stopper has a body and a flexible portion, which may be in the form of a plurality of flexible members, extending therefrom. The flexible portion or members are movable between first and second positions. In the first position, during filling, the portion or members are substantially laterally extending from the stopper body and engaging the opening of the device body. Accordingly, the axial position of the stopper with respect to the device body is secured during filling of the chamber therethrough. In the second position, after filling, the portion or members are substantially axially-extending from the stopper body and disengaged from the rim or opening of the device body. Accordingly, the stopper is axially slideable through the body.

Abstract: A bag rack and dispensing system and method of packaging and dispensing items, such as food, is disclosed. The bag rack and dispensing system includes a rack that is formed of a base assembly and a hanger assembly on which multiple storage bags can be hung. A method of using the bag rack and dispensing system for packaging and dispensing food items includes, but is not limited to, the steps of hanging the storage bags on the rack of the bag rack and dispensing system, opening the frontmost storage bag, holding open or propping open the storage bag using a hooking device, placing the food item(s) or any other types of item(s) into the storage bag, removing the hooking device, if used, closing the storage bag, and removing the filled storage bag from the rack of the bag rack and dispensing system.

Abstract: Method for arranging a foil in a tray, comprising: providing a tray (1) having a bottom, an upright wall, a tray opening and a circumferential outwardly extending flange composed out of at least two abutting portions; providing a foil (7) having at least dimensions corresponding with the outer dimensions of the flange; heating a central zone (15) of the foil; urging the heated central zone of the foil against the bottom, the upright wall and at least partially over the flange, wherein the edge of the heated central zone runs over the interfaces of abutting portions. Intermediate product with a foil lying loose over a flange of the tray. Device comprising a mold (5) for receiving a tray (1), means for arranging a foil (7) over the mold, heating means comprising a plate which is arranged over the mold for heating the foil and means for urging the foil in the mold.

Abstract: A net wrapping system includes an insertion assembly configured to move between a home position and an insert position. The insertion assembly has at least one insertion assembly spreader roll configured to engage net wrapping from a net roll. The net wrapping system also includes a fixed spreader roll proximate to the net roll and configured to engage the net wrapping along a length of the fixed spreader roll circumferential surface when the insertion assembly is in the home position. The net wrapping system further includes a back wrap roll located along a net path between the fixed spreader roll and the at least one insertion assembly spreader roll and configured to cause the net wrapping to maintain engagement with substantially the same length of the fixed spreader roll circumferential surface when the insertion assembly is in the insert position.

Abstract: A displacement device is for preparing a bag for its installation at a filling point (or second location) of packaging equipment. The displacement device grabs the bag from the pick-up location (or stack) (at which first position and orientation parameters have been previously measured), displaces the bag while measuring second position and orientation parameters of the bag, adjusting the operation and displacement of the displacement device for displacing and installing the bag at the filling point; at the same time, the measurement of the next bag's first position and orientation parameters is done to adjust the operation and displacement of the displacement device for grabbing the next bag on the stack. Such a double location evaluation, which is concomitant on two different bags, allows savings in processing time.

Abstract: A device for opening and emptying filled two-piece capsules, each having a capsule lower part and a capsule upper part, comprises a separator block for separating the capsule lower part from the capsule upper part. A guide pusher is provided for pressing individual two-piece capsules into the separator block in a pressing direction. The separator block has a first clamping track for the lower capsule part and a second clamping track for the capsule upper part. The clamping track have a direction of advancement in which the capsule upper part or capsule lower part can be moved by the guide pusher and be clamped perpendicularly thereto. The two clamping tracks are inclined such that their directions of advancement diverge at an angle to the pressing direction of the guide pusher.

Abstract: A container made of plastic, provided with a body and with a bottom extending from an end of the body, the bottom having a peripheral seat defining a seating plane, a central zone at an inner area of the bottom surrounding a pellet and corresponding to a zone of injection of the material of a preform used to produce the container, a concave arch extending from the central zone to the peripheral seat, a series of principal reinforcing grooves extending radially from the central zone to at least the peripheral seat. The arch has two concentric regions, including a central region and a peripheral region, separated by a median axial step that extends annularly continuously around the central zone, so that the central region is raised with respect to the peripheral region.

Abstract: (1) A container for a nonaqueous electrolytic solution, containing a material containing an aluminum or aluminum alloy layer, and storing a nonaqueous electrolytic solution containing a nonaqueous solvent having dissolved therein an electrolyte salt, the container having a cap and a plug each formed of a resin, and maintaining the nonaqueous electrolytic solution to have a water content of 50 ppm or less after storing in the container for 30 days, (2) a nonaqueous electrolytic solution placed in the container, and (3) a method for storing a nonaqueous electrolytic solution. The container for a nonaqueous electrolytic solution is a light weight container that prevents the nonaqueous electrolytic solution from being decomposed on storing to maintain the high quality, and facilitates and ensures the handling of the nonaqueous electrolytic solution.

Abstract: A dispenser carton including a removable bin dispenser. The removable bin dispenser forms part of the exterior surface of the carton, but may be detached from the carton to allow access to the carton. The carton has a dual dispensing feature in that the carton may either be displayed with the removable bin dispenser positioned on the carton to form a counter top dispenser configuration or a hanging configuration or the carton may be displayed with the removable bin dispenser simply removed to form a shelf-loaded carton configuration.

Abstract: A container comprising a finish, a sidewall portion extending from the finish, a base portion extending from the sidewall portion and enclosing the sidewall portion to form a volume therein for retaining a commodity, and a plurality of horizontally disposed rib members disposed in at least one of the sidewall portion and the base portion. The plurality of horizontally disposed rib members is continuously disposed about the sidewall portion or the base portion and, in some embodiments, defines a perimeter length about 3-5% shorter than perimeter lengths of adjacent lands. The plurality of horizontally disposed rib members providing improved structural integrity such that a pre-fill size of the container is approximately equal to a post-filled, cooled size of the container.

Abstract: A blank of foldable sheet material for forming a container is provided. The blank includes a top panel, a front tuck flap extending from a front edge of the top panel, and a top side panel extending from a side edge of the top panel. The blank also includes a bottom panel, a front panel extending from a front edge of the bottom panel, and a corner portion. The corner portion includes a minor diagonal panel extending and a major diagonal panel. The corner portion also includes a corner panel hingedly connected to the minor and major diagonal panels. The front panel is configured to engage the front tuck flap to at least partially define a first releasably secure closure of the container, and the top side panel includes a front edge configured to engage the minor diagonal panel to at least partially define a second releasably secure closure of the container.

Abstract: The present invention discloses a pallet comprising a plurality of elongate base members (102) being spaced apart from one another at its long edges with a plurality of block structures (108) arranged one by one within and along the long edges of each base member (102) that the base member (102) carries a plurality of paired slits (106) and each slit (106) cuts into every block structure (108) at a predetermined length; and a plurality elongate deck units (101) perpendicularly disposed on top of the base members that each deck unit is defined by a first construct (103), with an n-shaped cross-sectional profile, sandwiched in between a pair of second constructs (104), with an inverted L-shaped cross-sectional profile, and each deck unit (101) has a conjoined horizontal flat surface and a pair of downwardly extending portions (105) formed by the contiguous first (103) and second constructs (104); wherein the paired vertical extending portions (105) of each deck unit (101) are slotted into the aligned paired sli

Abstract: The present invention relates to a container assembly having a first container part (2) with a dispensing opening (8), and a second container part (3) with a dispensing opening (9). Thus, the first container part (2) and the second container part (3) can be connected to one another such that the dispensing opening (8) of the first container part (2) points in a first direction and the dispensing opening (9) of the second Container part (3) points in a second direction.

Abstract: A collapsible bin container having a base portion and side walls hingedly connected to the base portion. At least one of the side walls includes an integrally formed hinge lug having a first generally cylindrical portion and a second flat angled portion. The base portion includes a corresponding hinge slot having an opening configured to receive the hinge lug only when the side wall is positioned at a first angle with respect to a horizontal surface.

Abstract: A transparent silicone cover and accompanying transparent silicone securing bands that safeguard a glass pharmaceutical vial from shattering or cracking as a result of handling by automated dispensing units, patients, or medical or veterinary staff while simultaneously allowing inspection and reading of an enclosed vial, its contents and all labels in their entirety, as well as scanning of barcodes in the clinical setting. The main body provides a cylindrical lumen for the vial to rest in securely while effectively protecting the vial's sidewalls and base. One side of the main body has a narrow slit from top to base which also extends inwardly partially across the base, allowing the main body to flex open, offering easy insertion and removal of a vial. The transparent silicone securing bands fit tightly over the main body to further safeguard the enclosed vial. The entire assemblage is autoclavable, hypoallergenic, microbe resistant, removable and reusable.

Abstract: A coating composition for a food or beverage can that includes an emulsion polymerized latex polymer formed by combining an ethylenically unsaturated monomer component with an aqueous dispersion of a water-dispersible polymer.

Abstract: A foldable handle for a cook-pot including a bracket attached to the cook-pot, a handle member, a lock member and a bracing link member. The handle member has an upper end portion pivotally connected to the bracket, and opposed first and second sidewalls, each with an upper opening located in the upper end portion of the handle member and a lower opening located in a lower end portion of the handle member. The handle member has a guide channel with a lock member slidably disposed therein for movement between the upper and lower end portions of the handle member. First and second resiliently flexible members each having a projection for removably fitting within corresponding upper and lower openings of the first and second sidewalls. The link member has a first end rotatable retained by the bracket, and a second end rotatably attached to the lock member.

Abstract: A clamshell food tray. In some embodiments, the clamshell food tray can comprise a window such that a viewer can see into the interior of the clamshell food tray when the clamshell food tray is in a closed configuration. In some embodiments, the clamshell food tray can have apertures configured to accept a beverage container.

Abstract: The head (16) includes an application wall (30) having a central axis (A-A?), in which the application wall (30) defines at least one product dispensing orifice (82A), off-centered with respect to the central axis (A-A?), It includes a removable cap, mobile between a position for closing each dispensing orifice (82A) and a product dispensing position, the removable cap (32) comprising a bearing element (106B) on the application wall (30). The dispensing orifice (82A) remains clear when the bearing element is applied on the application wall (30), When the cap (32) occupies its closing position, each dispensing orifice (82A) is placed facing an intermediate closed region (154) of a bearing element (106B), located between a first exterior contact region (152A) of the bearing element (106B) with the application wall (30) and a second interior contact region (152B) of the bearing element (106B) with the application wall (30).

Abstract: An improved cork closure for beverage and wine bottles having a recess on the outer face of the closure. The recess is designed to facilitate the extraction process by providing central constraint on the position of the corkscrew on the face of the closure and to guide the corkscrew along the axis of the closure. This recess does not interfere with any other type of extraction device.

Abstract: A crown cap is adapted to be removably coupled to a bottle. The crown cap has a circular central region and a downwardly extending side wall in a generally cylindrical configuration. The side wall has an inwardly scrolled lower edge. The central region of the crown cap radially terminates in an upwardly extending exterior projection. The crown cap has a downwardly extending interior projection radially interior of the exterior projection. An adhesive is provided in the exterior projection.

Abstract: A cap is for a container body including a mouth portion having an upper potion provided with a thread, a middle portion provided with an annular bead portion, and a lower portion provided with an annular shoulder portion. The cap includes a cap portion, a ring portion, and the locking mechanism. The ring portion serves as a tamper-evident ring configured to be connected to the lower end of the cap portion through a breakaway part. The ring portion has an elastic piece folded and anchored on the annular bead portion. The ring portion is rotatably provided between the annular bead portion and the annular shoulder portion. The locking mechanism is configured to be operated by a rotational operation to prevent the cap portion from being unintentionally unscrewed.

Abstract: A manway cover assembly can be used to control access to the interior of a railroad tank car or other type of tank or structure. A manway cover assembly can also be used for selectively sealing an access passageway of a tank. The manway cover assembly can have an internal seal that remains sealed independent of movement between the cover and the opening within a set range of movement. The manway cover assembly can have a tightening system and a cover to control access to the opening.