U fiirso qoraalka hoose ka dibna ka jawaab su'aasha kadib isla luqadda qoraalka:  Marinka: Sannadihii 1990-meeyadii, Shaybaarka Cilmi-baarista Ciidanka Cirka (AFRL) wuxuu bilaabay barnaamijka HyTECH ee loogu talagalay kor u qaadista hypersonic. Pratt & Whitney waxay qandaraas ka heshay AFRL si ay u horumariyaan matoorka scramjet ee shidaalka ka soo baxa ee hydrocarbon kaas oo horseeday horumarinta matoorka SJX61. Mashiinka SJX61 waxaa asal ahaan loogu talagalay NASA X-43C, oo ugu dambeyntii la joojiyay. Mashiinka waxaa loo adeegsaday barnaamijka Bandhigga Mashiinka Scramjet ee AFRL dabayaaqadii 2003. Gawaarida tijaabada duulimaadka ee loo yaqaan'scramjet' waxaa loo magacaabay X-51 27kii Sebtember 2005.  Su'aal: Muxuu ahaa masiirka ugu dambeeyay ee barnaamijka diyaaradaha X-43C ee NASA?
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