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.

moments are presented for maximum single strake deployments for α = 20° to 65°. Forebody yawing moments and pressure distributions are presented at α = 50° for two symmetric strake deployments. Comparisons with ground facility results for a full-scale F-18 model are included.

2017年7月26日 · This 23-second video taken in 1995 shows the F-18 High Alpha Research Vehicle (HARV) undergoing a Phase III Strake Experiment flight test over Edwards Air Force Base in California’s Mojave...

strakes were installed on the F-18 HARV radome and were designed to provide increased levels of yaw control at high angles of attack where conventional rudders become ineffective. This paper describes and reports flight results from off-surface flow visualization and forebody pressure distributions of the F-18 HARV with

2003年4月1日 · Results from these studies show that a pair of conformal actuated forebody strakes applied to the F-18 HARV can provide a powerful and precise yaw control device at high angles of attack.

2024年4月27日 · The airflow at some point over the top of a wing that is close to a fuselage will not necessarily be in the exact direction of flight. You would then expect the strake orientation to be finessed to follow the airflow, so as to minimize yawing forces and drag.

NASA’s Dryden (now Armstrong) Flight Research Center in Edwards, California, used an F-18 Hornet fighter aircraft as its High Angle-of-Attack (Alpha) Research Vehicle (HARV) in a three-phased flight research project lasting from April 1987 until September 1996.

forebody and strakes of the NASA F-18 High Alpha Research Vehicle (HARV) equipped with actuated forebody strakes. Forebody yawing moments were obtained by integrating the

NASA F- 18 High Alpha Research Vehicle (HARV) equipped with actuated for. body strakes. Forebody yawing moments . trakes. Results show that large yawing moments can be generated with forebody strakes. At angles of attack greater than 40 °, deflecting one strake at a time re.

The McDonnell Douglas F/A-18 Hornet is an all-weather supersonic, twin-engine, carrier -capable, multirole combat aircraft, designed as both a fighter and attack aircraft (hence the F/A designation).