▁ratio ▁and ▁employed ▁a ▁N AC A ▁ 8 - H - 1 2 ▁air fo il . ▁The ▁aircraft ▁had ▁a ▁very ▁high ▁wing ▁area ▁of ▁ ▁which ▁resulted ▁in ▁a ▁light ▁wing ▁loading ▁of ▁just ▁ 3 . 8 1   lb / sq ▁ft ▁( 1 8 . 6   kg / m 2 ). ▁ ▁The ▁prototype ▁B KB - 1 ▁was ▁originally ▁registered ▁in ▁Canada ▁as ▁CF - Z DK - X . ▁Later ▁it ▁was ▁moved ▁to ▁the ▁United ▁States , ▁owned ▁by ▁Kas per ▁and ▁registered ▁as ▁N 2 9 9 1 G . ▁ ▁As ▁a ▁test bed ▁the ▁aircraft ▁went ▁through ▁several ▁modification ▁states . ▁The ▁modifications ▁included ▁aer od ynamic ▁devices ▁to ▁improve ▁aircraft ▁control ▁above ▁the ▁st alling ▁angle . ▁These ▁reduced ▁the ▁st all ▁speed ▁to ▁ ▁and ▁resulted ▁in ▁a ▁ 2 0 0   ft / min ▁( 1 . 0   m / s ) ▁rate ▁of ▁descent ▁while ▁st alled . ▁This ▁allowed ▁st alled ▁land ings ▁with ▁no ▁ground ▁roll . ▁As ▁a ▁result ▁of ▁these ▁and ▁other ▁design ▁changes ▁the ▁aircraft ▁was ▁designated ▁as ▁the ▁B KB - 1 A , ▁the ▁" A " ▁indicating ▁aer ob at ics . ▁The ▁aircraft ▁was ▁intended ▁to ▁be ▁fully ▁aer ob atic , ▁including ▁t umb ling ▁man eu vers . ▁ ▁Kas per ▁had ▁a ▁plan ▁to ▁produce ▁the ▁aircraft ▁and ▁the ▁development al ▁derivative ▁Kas per ▁Bek as , ▁which ▁mount ▁different ▁wings ▁to