摘要:
A combustion chamber for a gas turbine engine comprising at least one Helmholtz resonator having a resonator cavity and a resonator neck in flow communication with the interior of the combustion chamber. The cavity extends around at least part of the neck and is spaced apart therefrom to define a cooling chamber therebetween. The cooling chamber allows the neck and the cavity to be cooled with a flow of cooling air. The sunken neck allows the resonator to be located within enclosures with minimal volume without compromising on the damping properties afforded.
摘要:
A combustion chamber suitable for a gas turbine engine is provided with at least one Helmholtz resonator having a resonator cavity and a resonator neck in flow communication with the chamber interior. The resonator neck is provided with at least cooling holes extending through its wall for improved damping and cooling, at least one of the holes is directed towards the resonator cavity.
摘要:
A combustor wall of a gas turbine engine is provided with an acoustic damper component. The component has a first metering passage, a first damping chamber, a first damping passage, a second damping chamber and a second damping passage. Air flows through the damper to be ejected into the combustion chamber from the second damping passage at a selected velocity and volumetric flow. The flow being sufficient to damp instabilities from the combustion process.
摘要:
A method is presented for managing authentication credentials for a user. A session management server performs session management with respect to the user for a domain that includes a protected resource. The session management server receives a request to access the protected resource, which requires authentication credentials that have been generated for a first type of authentication context. In response to determining that authentication credentials for the user have been generated for a second type of authentication context, the session management server sends to an authentication proxy server a first message that contains the authentication credentials for the user and an indicator for the first type of authentication context. The session management server subsequently receives a second message that contains updated authentication credentials for the user that indicate that the updated authentication credentials have been generated for the first type of authentication context.
摘要:
The invention provides federated functionality within a data processing system by means of a set of specialized runtimes. Each of the plurality of specialized runtimes provides requested federation services for selected ones of the requestors according to configuration data of respective federation relationships of the requestors with the identity provider. The configuration data is dynamically retrieved during initialization of the runtimes which allows the respective runtime to be specialized for a given federation relationship. Requests are routed to the appropriate specialized runtime using the first requestor identity and the given federation relationship. The data which describes each federation relationship between the identity provider and each of the plurality of requesters is configured prior to initialization of the runtimes. Configuration data is structured into global specified data, federation relationship data and requestor specific data to minimize data change, making the addition or deletion of requesters very scalable.
摘要:
A method and a system are presented in which federated domains interact within a federated environment. Domains within a federation can initiate federated single-sign-on operations for a user at other federated domains. A point-of-contact server within a domain relies upon a trust proxy within the domain to manage trust relationships between the domain and the federation. Trust proxies interpret assertions from other federated domains as necessary. Trust proxies may have a trust relationship with one or more trust brokers, and a trust proxy may rely upon a trust broker for assistance in interpreting assertions. When a user is provisioned at a particular federated domain, the federated domain can provision the user to other federated domains within the federated environment. A provision operation may include creating or deleting an account for a user, pushing updated user account information including attributes, and requesting updates on account information including attributes.
摘要:
A method and a system are presented in which federated domains interact within a federated environment. Domains within a federation can initiate federated operations for a user at other federated domains. A point-of-contact server within a domain relies upon a trust proxy within the domain to manage trust relationships between the domain and the federation. The point-of-contact server receives incoming requests directed to the domain and interfaces with a first application server and a second application server, wherein the first application server responds to requests for access to controlled resources and the second application server responds to requests for access to federated user lifecycle management functions, which are implemented using one or more pluggable modules that interface with the second application server.
摘要:
A variable geometry combustor (15), comprising: a combustor liner (42) defining at least one dilution port (86) for providing air to a dilution zone (85) of the combustor; and at least one valve (90) positioned adjacent the dilution port (86) for controlling the flow of air through the dilution port (86), the valve (90) being settable to maintain one of a plurality of different open configurations.
摘要:
A dynamic information retrieval service is provided that can be configured to retrieve entitlement information from a plurality of providers. Any application that requires entitlement data may make a request for that information to the dynamic information retrieval service using a single standard interface. A request includes information describing the identity of the user and a list of names representing the entitlement data that are required. The dynamic information retrieval service determines the appropriate provider for the entitlement information, retrieves the entitlement data, and returns the requested entitlement data to the application. The dynamic information retrieval service may also cache the entitlement data. The dynamic information retrieval service may process requests requiring several distinct items of entitlement data to be retrieved in parallel. Therefore, applications may send a single request for entitlement data for a single user, but for several providers.
摘要:
The present invention provides a process for the preparation of polymer which comprises the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers and an initiator into the top of a reactor ii) polymerizing the monoethylenically unsaturated monomer to form a gel-like aqueous mixture comprising the polymer, iii) squeezing the gel-like aqueous mixture comprising the polymer out of the bottom of the reactor using inert gas, wherein the reactor is either a vertical fully conical reactor having an angle (alpha) between top diameter (d1) of the reactor and inner wall of the reactor of smaller than 90° but larger than 45° or is made up of 2 to 5 connected vertical fully conical parts, which are on top of one another, each having an angle between top diameter of the part and inner wall of the part of smaller than 90° but larger than 45°.