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strake aeronautics wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 nose strakes 2 wing strakes 3 nacelle strakes 4 ventral strakes 5 rear strakes tail fins toggle rear strakes tail fins subsection 5 1 anti spin strakes 6 munitions 7 see also 8 references 9 external links toggle the table of contents strake aeronautics 6 languages deutsch français bahasa indonesia 日本語 português 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia flight control surface for other uses see strake disambiguation nose wing and ventral strakes vortices over the wing strakes of an f a 18e super hornet in aviation a strake is an aerodynamic surface generally mounted on the fuselage of an aircraft to improve the flight characteristics either by controlling the airflow acting as large vortex generators or by a simple stabilising effect in general a strake is longer than it is wide in contrast to a winglet or a moustache leading edge root extensions lerx are also sometimes referred to as wing strakes nose strakes edit on both supersonic and subsonic types smaller strakes are sometimes applied to the forward fuselage to control the fuselage flow at high angles of attack for example the concorde had small nose strakes to get a better directional stability 1 wing strakes edit further information leading edge root extension double delta wing aircraft concorde tupolev tu 144 boeing 2707 and lockheed l 2000 sst projects featured a forward extended leading edge that may be considered as a wing strake it provides the same additional vortex lift at high angle of attack by leading edge suction 2 nacelle strakes edit on jet aircraft where the engines are mounted in nacelles slung under the wings strakes may be added to one or both sides of each nacelle to produce vortices that energize the airflow over the wings in times of high angle of attack such as during takeoff and landing thus improving wing effectiveness ventral strakes edit socata tb 200 ventral strakes one or two ventral strakes are sometimes positioned under the fuselage as large vortex generators to provide a better tail surfaces efficiency typical examples can be seen on the socata tb family or the lockheed f 104 starfighter rear strakes tail fins edit one or two large fins or strakes are sometimes positioned under the rear fuselage or below the empennage to provide adequate stability at high angles of attack when the tail fin is shielded from the main airstream by the fuselage and or the wing wake typical examples can be seen on the piaggio p 180 avanti learjet 60 and beechcraft 1900 d the grumman x 29 research aircraft had rear fuselage lateral fins or tail fins 3 sometimes called strakes 4 continuous with the trailing edge of the main wing this allowed the positioning of a rear control surface at the end of each fin together with the main and forward canard wing control surfaces this effectively gave it a three surface configuration anti spin strakes edit spin strakes on dhc 1 chipmunk anti spin leading edge strakes or spin strakes or antispin fillet 5 may be placed at the tailplane roots of generally aerobatic aircraft such as the de havilland tiger moth british version scottish aviation bulldog and de havilland canada dhc 1 chipmunk 6 ventral or dorsal fins increasing the directional stability are also used as anti spin devices shortly after the wwii introduction of the d variant of the north american p 51 mustang fighter with its bubble canopy for improved pilot visibility a dorsal fillet or strake was added to the front of the vertical stabilizer fin in order to strengthen the tail empennage and to improve lateral stability in the yaw axis 7 munitions edit certain air deployed munitions particularly dumb or unguided 500 pound 230 kg bombs are often retrofitted with bolt on strake sets designed as an open collar with strakes fitted to the outside face these strake sets are used to alter and normalize the aerodynamics of the weapon yielding greater accuracy as most such munitions were manufactured with only tail mounted stabilizer fins the addition of longitudinal strakes proves a much cleaner flow of air around the weapon during its glide reducing the tendency to yaw and improving terminal accuracy citation needed strakes are also often found on smart or guided munitions as an aid to the guidance system by stabilizing the slipstream of air traveling over the weapon the actions of control surfaces are much more predictable and precise again improving the accuracy of the weapon citation needed see also edit index of aviation articles chine aeronautics leading edge extension vortex generator references edit andré peyrat armandy les avions de transport modernes et futurs teknea 1997 p 229 hoerner fluid dynamic lift double delta wings in hoerner fluid dynamic lift tail fins dorsal and others fins on fuselage miller j the x planes 2nd printing speciality press 1985 nasa tn d 6575 summary of spin technology as related to the light general aviation airplanes fig 10 daroll stinton the design of the aeroplane lateral and directional stability and spinning p 461 how many versions of the p 51 dorsal fin fillet are documented external links edit media related to strakes at wikimedia commons v t e aircraft components and systems airframe structure aft pressure bulkhead cabane strut canopy crack arrestor cruciform tail dope empennage fabric covering fairing flying wires former fuselage hardpoint interplane strut jury strut leading edge lift strut longeron nacelle rib spar stabilizer stressed skin strut t tail tailplane trailing edge triple tail twin tail v tail vertical stabilizer wing root wing tip wingbox flight controls aileron airbrake artificial feel autopilot canard centre stick deceleron dive brake dual control electro hydraulic actuator elevator elevon flaperon flight control modes fly by wire gust lock hotas rudder rudder pedals servo tab side stick spoiler spoileron stabilator stick pusher stick shaker trim tab wing warping yaw damper yoke aerodynamic and high lift devices active aeroelastic wing adaptive compliant wing anti shock body blown flap channel wing dog tooth drag reducing aerospike flap gouge flap gurney flap krueger flap leading edge cuff leading edge droop flap lex slats slot stall strips strake variable sweep wing vortex generator vortilon wing fence winglet avionic and flight instrument systems acas air data boom air data computer aircraft periscope airspeed indicator altimeter annunciator panel astrodome attitude indicator compass course deviation indicator efis eicas flight management system glass cockpit gps head up display heading indicator horizontal situation indicator ins isis multi function display pitot static system radar altimeter tcas transponder turn and slip indicator variometer yaw string propulsion controls devices and fuel systems autothrottle drop tank fadec fuel tank gascolator inlet cone intake ramp naca cowling naca duct self sealing fuel tank splitter plate throttle thrust lever thrust reversal townend ring war emergency power wet wing landing and arresting gear aircraft tire arrestor hook autobrake conventional landing gear drogue parachute landing gear landing gear extender oleo strut tricycle landing gear tundra tire escape systems ejection seat escape crew capsule other systems aircraft lavatory auxiliary power unit bleed air system deicing boot emergency oxygen system environmental control system flight recorder hydraulic system ice protection system in flight entertainment system landing lights navigation light passenger service unit ram air turbine retrieved from https en wikipedia org w index php title strake_ aeronautics oldid 1306762300 categories aircraft aerodynamics aircraft components hidden categories articles with short description short description matches wikidata all articles with unsourced statements articles with unsourced statements from august 2019 commons category link is on wikidata this page was last edited on 19 august 2025 at 14 58 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents strake aeronautics 6 languages add topic