▁been ▁helped ▁by ▁the ▁addition ▁of ▁ 1 , 0 0 0   lb ▁of ▁lead ▁ball ast ▁in ▁the ▁nose ▁against ▁the ▁wishes ▁of ▁T arr ant . ▁ ▁Oper ators ▁ ▁Royal ▁A ircraft ▁Est ab lish ment ▁ ▁Spec ifications ▁( est im ated ) ▁ ▁See ▁also ▁▁ ▁W itt eman - L ew is ▁X N BL - 1 ▁- ▁a ▁design ▁by ▁Bar ling ▁for ▁a ▁similar ▁aircraft ▁for ▁the ▁US ▁Army ▁ ▁References ▁ ▁Notes ▁ ▁Cit ations ▁ ▁External ▁links ▁▁ ▁http :// members . a ol . com / ww atr ans / unique . htm ▁ ▁http :// www . uh . edu / eng ines / ep i 2 0 9 9 . htm ▁ ▁Category : 1 9 1 0 s ▁British ▁bom ber ▁aircraft ▁Category : Tri plan es ▁Category : Cancel led ▁military ▁aircraft ▁projects ▁of ▁the ▁United ▁Kingdom ▁T abor ▁Category : S ix - eng ined ▁push - pull ▁aircraft ▁Category : A ircraft ▁first ▁flow n ▁in ▁ 1 9 1 9 ▁Category : A viation ▁acc idents ▁and ▁inc idents ▁in ▁ 1 9 1 9 ▁Category : A viation ▁acc idents ▁and ▁inc idents ▁in ▁England <0x0A> </s> ▁is ▁a ▁cent aur ▁on ▁a ▁highly ▁ecc ent ric ▁orbit ▁from ▁the ▁outer ▁Sol ar ▁System , ▁originally ▁estimated ▁by ▁J PL ▁to ▁be ▁a ▁near - E arth ▁astero id ▁approximately ▁ ▁in ▁diameter . ▁Con vers ely , ▁the ▁Minor ▁Planet ▁Center ▁class