For 'Dimitris': Click thumbnail for 'sideslipwindvane AV-8B' big pic:
Aerial Pursuits Patrick McMonigle USMC Harrier Pilot
Volume 10.11 Newsletter of EAA Chapter 1114 Apex/Cary, NC Nov., 2004
http://www.bairdsolutions.com/pages/.../ap_nov_04.pdf
“...I am very careful therefore during hover operations required for landing on our small LHA/LHD carrier decks. The death equation dictates this: (angle-of-attack) x (sideslip angle) x (airspeed) = 0. A small wind vane on the nose helps us avoid sideslip, and a rudder shaker reminds us which rudder peddle to stomp on if we get into trouble...."