초록 ▼

An exhaust nozzle includes an annular exhaust duct for discharging exhaust from an aft end thereof. Circumferentially adjoining chevrons extend from the duct aft end around only an arcuate portion thereof leaving a plain arcuate shelf between terminal ones of the chevrons. Each of the chevrons has a

An exhaust nozzle includes an annular exhaust duct for discharging exhaust from an aft end thereof. Circumferentially adjoining chevrons extend from the duct aft end around only an arcuate portion thereof leaving a plain arcuate shelf between terminal ones of the chevrons. Each of the chevrons has a triangular configuration and a compound arcuate contour both circumferentially and axially.

대표청구항 ▼

An exhaust nozzle includes an annular exhaust duct for discharging exhaust from an aft end thereof. Circumferentially adjoining chevrons extend from the duct aft end around only an arcuate portion thereof leaving a plain arcuate shelf between terminal ones of the chevrons. Each of the chevrons has a

An exhaust nozzle includes an annular exhaust duct for discharging exhaust from an aft end thereof. Circumferentially adjoining chevrons extend from the duct aft end around only an arcuate portion thereof leaving a plain arcuate shelf between terminal ones of the chevrons. Each of the chevrons has a triangular configuration and a compound arcuate contour both circumferentially and axially. ly invocable sub-entity. 6. The method defined in claim 4 wherein the first internally invocable sub-entity comprises a subroutine. 7. The method defined in claim 1 wherein the set of generic functions comprises addition, subtraction, multiplication, division, and at least one conditional operation. 8. The method defined in claim 1 further comprises performing a storage creation operation by selecting an entity from the population of programmatic entities; and adding a new storage definition branch to the selected entity. 9. The method defined in claim 8 wherein adding a new storage definition branch comprises: choosing a storage dimension and storage type for the new storage definition branch; selecting an ordered set of storage sizes responsive to the storage dimension and storage size, the set of storage sized being appropriate for the storage dimension and storage size; adding a storage writing branch and a storage reading branch to the new storage definition branch; inserting a storage read branch and storage write branch pair into the selected entity; and inserting a copy of the storage read branch and storage write branch pair for each dimension of the storage definition branch greater than one. 10. The method defined in claim 1 further comprises performing a storage addition operation by: selecting an entity from the population of entities; adding a new storage definition branch to the selected entity; choosing a storage dimension, storage type, and storage size for the new storage definition branch; adding a storage writing branch and a storage reading branch to the new storage definition branch; choosing a node within the selected entity; inserting a storage read branch and storage write branch pair at the node, wherein a write branch consists of a subtree rooted at the node; and inserting a copy of the storage read branch and storage write branch pair into the selected entity for each dimension of the storage definition branch greater than one. 11. The method defined in claim 1 further comprises performing a storage deletion operation by: selecting an entity from the population of entities; choosing a storage read branch and storage write branch pair in the selected entity; deleting the storage read branch and storage write branch pair; removing references to the selected storage read branch and storage write branch pair from the set of terminals and set of functions; and deleting all invocations of the deleted storage read branch and storage write branch pair from the selected entity. 12. The method defined in claim 1 further comprises performing a storage duplication operation by: selecting an entity from the population of entities; choosing a storage read branch and storage write branch pair in the selected entity; duplicating the storage read branch and storage write branch pair in the selected entity; and replicating preexisting invocations of the chosen storage read branch and storage write branch pair with invocations of the duplicated storage read branch and storage write branch pair. 13. The method defined in claim 1 further comprises performing a storage argument duplication operation by: selecting an entity from the population of entities; choosing a storage read branch and storage write branch pair in the selected entity; choosing an argument from an argument list of a storage definition branch corresponding to the storage read branch and storage write branch pair; adding a new argument to the argument list which is a copy of the argument; duplicating the new argument for all invocations of the argument list of the storage read branch and storage write branch pair in the selected entity; and replicating preexisting storage in the selected entity. 14. The method defined in claim 1 further comprises performing a storage argument deletion operation by: selecting an entity from the population of entities; choosing a storage read branch and storage writ