\n\tESDU Aero C.01.01.01 gives graphs for the lift-curve slope derived by correlating results of wind-tunnel tests on models without simulated propeller slipstream. The lift-curve slope is based on an effective area for the fin and rudder that includes the fuselage area directly below the fin root chord (where there is a small fillet the root chord is defined by extending the fuselage top line and fin leading edge to intersect; the effect of large fillets is not covered). The method involves obtaining the lift-curve slope of a rectangular wing of equivalent aspect ratio that allows for the end plate effect of the tailplane. Graphs plot: (i) the ratio of the fin and rudder lift-curve slope to that of the rectangular wing, (ii) the lift-curve slope of the rectangular wing as a function of the equivalent aspect ratio and the trailing-edge angle of the rudder, and (iii) the equivalent aspect ratio as a function of the tailplane position on the fin. It is noted that there is also an effect of wing position on the fin and rudder lift-curve slope but it is believed that effect is covered by a scatter band shown on the graph plotting the lift-curve slope ratio. The effect of a gap between the fin and rudder may be treated by the method of ESDU Aero C.01.01.04. A method for estimating the centre of pressure for the sideforce is suggested. The lift-curve slope is predicted to within 10 per cent. For fins mounted on a circular fuselage ESDU 82010 should be consulted while for twin fins and rudders ESDU 92007 may be used.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"
Lift-Curve Slope for Single Fin and Rudder – (I) Body Shape Merging into Fin<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ESDU<\/b><\/a><\/td>\n 1982-04-01<\/td>\n 5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-559598","1":"product","2":"type-product","3":"status-publish","5":"product_cat-esdu","7":"first","8":"instock","9":"sold-individually","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/559598","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:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=559598"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=559598"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=559598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}