Leo Mhe Bashe ametamalaki sana mitandaoni. Je, huyu ndiye mchezaji wa akiba atakayeingia uwanjani baada ya 'Celestine Sikinde Mbunga'? Je, ndiye kiungo mkabaji baada ya mpwa wa 'Mtemi wa Unyanyembe'? Neno moja kwake! Je, nini kimekushangaza? Je, nini maoni yako?
In the mid-1950s, Hiller Aircraft constructed a series of flying platforms for an Army-Navy program. The pilot simply leaned in the desired direction and the platform would follow. Hiller Aircraft incorporated twin counter-rotating propellers in a round housing (ducted fan). Sixty percent of the platformβs lift was generated by thrust from the counter-rotating propellers and 40% was generated by air moving over the ducted fan's leading edge (Bernoulli principle).
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