roulis

Terminological databases

ID 726651 Last modified 30.12.2004

Domain maritime traffic; seaborne traffic

külgõõtsumine preferred

rullumine

rolling

roulis

Rollen

keinuminen

tasakaaluasendist hälbinud laeva kõikumine ümber horisontaalse pikitelje (muutuv kreen). R. halvendab inimeste ja mehhanismide töötingimusi: koormab konstruktsioone inertsijõududega, võib põhjustada lasti nihkumise laadruumis ning avaldab laeval viibivatele inimestele füsioloogilist mõju (merehaigus). Vabavõnkeperiood sõltub laevakere kujust ja lasti raskuskeskme asendist. Mida suurem on rullumise periood ja väiksem amplituud, seda vähem avalduvad rullumise negatiivsed tagajärjed.

the transverse oscillating rotation of a vessel about a longitudinal axis, which results when it meets waves with crests approximately parallel to the length of the ship. When a vessel rolls, it disturbs a much larger cross section of water than when it is steady. This increases its resistance to propulsion, and requires a corresponding increase in the propulsive power necessary for a given speed.

külgõõtsumine preferred

rullumine

rolling

Usage examples

Main propulsion machinery and all auxiliary machinery essential to the propulsion and the safety of the ship shall, as fitted in the ship, be designed to operate when the ship is upright and when inclined at any angle of list up to and including 15° either way under static conditions and 22,5° under dynamic conditions (rolling) either way and simultaneously inclined dynamically (pitching) 7,5° by bow or stern.

roulis

Rollen

keinuminen

ID 527579 Last modified 05.04.2023

Domain Air Forces -> General

pöörlemine preferred

keeris deprecated

roll preferred

roulis preferred

pöörlemine preferred

keeris deprecated

roll preferred

roulis preferred