{"id":557258,"date":"2024-11-05T18:17:28","date_gmt":"2024-11-05T18:17:28","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-020082009\/"},"modified":"2024-11-05T18:17:28","modified_gmt":"2024-11-05T18:17:28","slug":"esdu-020082009","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-020082009\/","title":{"rendered":"ESDU 02008:2009"},"content":{"rendered":"

INTRODUCTION<\/strong><\/p>\n

General<\/strong><\/p>\n

The increasing need for the internal carriage of weapons and
\nstores on combat aircraft in response to the dual requirements of
\nlow drag and low radar signature has created the need for
\ninformation on weapons bays with doors. During weapon deployment
\nthe bay is necessarily open to the effects of the external flow,
\nwhich creates an unsteady flow environment both within and around
\nthe bay. Such flows can engender not only aerodynamic problems in
\nterms of increased drag and potential difficulties with weapon
\ndeployment, but also structural and acoustic problems related to
\nthe high intensity tones that can be generated. These structural
\nand acoustic problems can affect the design of both the bay and its
\ncontents B on-board avionics for navigation and guidance can be
\nseriously affected by intense acoustic tones and the random
\nvibrations induced by the unsteady flow. The vibrational
\nenvironment alone requires special design standards for equipment
\nin aircraft, see References 53, 54, 56 and 57, and spacecraft, see
\nReference 55.<\/p>\n

Although weapons bay design is the main area in which cavity
\ndata are required, other areas, such as undercarriage bay design,
\ncan also benefit from the use of such data. Obviously, the geometry
\nof weapons and undercarriage bays will vary according to each
\napplication, but a reasonable, albeit idealistic, shape to assume
\nis a rectangular planform cavity B most researchers have made this
\nassumption, and it is the configuration adopted in this Data Item.
\nThat is not to say that other configurations are not required;
\nindeed other planform shapes, such as elliptical, have been tested
\nand require study in their own right.<\/p>\n","protected":false},"excerpt":{"rendered":"

Aerodynamics and Aero-Acoustics of Rectangular Planform Cavities – Part I: Time-Averaged Flow<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ESDU<\/b><\/a><\/td>\n2009-05-01<\/td>\n102<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":557265,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-557258","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-esdu","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/557258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/557265"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=557258"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=557258"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=557258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}