Phugoid motion damped li cas?

Cov txheej txheem:

Phugoid motion damped li cas?
Phugoid motion damped li cas?
Anonim

hom phugoid feem ntau yog maj mam damped low-frequency oscillation hauv nrawm u, uas khub niam txiv mus rau hauv tus cwj pwm θ thiab qhov siab h. … Yog li lub phugoid yog classical damped harmonic motion uas ua rau lub dav hlau ya ib maj mam sinusoidal ya davhlau txoj kev hais txog lub nominal trimmed qhov siab datum.

Yuav ua li cas dampen phugoid motion?

Ib qho chaw ruaj khov, txo qis phugoid tuaj yeem ua tiav los ntawm kev tsim lub me me stabilizer ntawm tus Tsov tus tw ntev dua, lossis, ntawm tus nqi ntawm lub suab thiab yaw "static" stability, los ntawm kev hloov cov nruab nrab ntawm lub ntiajteb txawj nqus mus rau nram qab.

Yuav ua li cas yog yob txoj kev?

Roll subsidence hom yog tsuas yog qhov damping ntawm rolling motion. Tsis muaj lub sijhawm aerodynamic ncaj qha tsim los ncaj qha rov qab tis-theem, piv txwv li tsis muaj rov qab "caij nplooj ntoos hlav quab yuam / lub sijhawm" proportional rau yob lub kaum sab xis.

Dab tsi yog yam cuam tshuam rau lub sijhawm thiab kev ua kom lub zog oscillations?

Qhov tseem ceeb tshaj plaws, lub sijhawm oscillation yog ncaj qha proportional rau caj npab 'ntev. Ntxiv mus, lub sij hawm ntawm oscillation yog inversely proportional rau lub ntiajteb txawj nqus. Kev nce ntawm pendulum caj npab ntev ua rau muaj kev nce ntxiv hauv lub sijhawm. Tsis tas li, qhov kev ncua ntev ua rau txo qis hauv lub sijhawm.

Yuav ua li cas cuam tshuam txog kev ruaj ntseg ntev?

Qhov kev ruaj ntseg ntev ntev ntawm lub dav hlau tau cuam tshuam los ntawm qhov kev ncua deb (lub sijhawm caj npab lossis caj npab npab)nruab nrab ntawm qhov nruab nrab ntawm lub ntiajteb txawj nqus (c.g.) thiab qhov chaw aerodynamic ntawm lub dav hlau. Cov c.g. yog tsim los ntawm tus tsim ntawm lub dav hlau thiab cuam tshuam los ntawm nws cov loading, raws li los ntawm payload, neeg nrog caij, thiab lwm yam.

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