The Greatest Planes That Never Were
The rather complicated design of the Boeing 2707-200 SST proposal in the mid-1960s
"Due to the kinetic heating experienced at Mach 2.7, a titanium alloy would be required, such high temperatures (as hot as 260 C / 500 F) being too great for aluminium alloys"
The rather complicated design of the Boeing 2707-200 SST proposal in the mid-1960s
"Due to the kinetic heating experienced at Mach 2.7, a titanium alloy would be required, such high temperatures (as hot as 260 C / 500 F) being too great for aluminium alloys"
![](https://scontent.faep9-1.fna.fbcdn.net/v/t1.0-9/72694872_10157558949364650_5260481781001355264_n.jpg?_nc_cat=103&_nc_oc=AQmlUwXcqYApI_MhLIyuxGdHtTXbJQ7Py7JIMCeBY5VJH1wCbxIybnMGGxB3A7-3kVM&_nc_ht=scontent.faep9-1.fna&oh=f17810922a4c8e0eb052937c5a554f62&oe=5E26F70A)
![](https://scontent.faep9-2.fna.fbcdn.net/v/t1.0-9/72596064_10157558949419650_6554474677606023168_n.jpg?_nc_cat=111&_nc_oc=AQnpSuNRu7nD9uwyBE2DVtEpNF9BaKrRGZRhhLEuvP555ObjtSAmXYl20ZHixwAZxIs&_nc_ht=scontent.faep9-2.fna&oh=e675a808a258feda3841e0081f43e546&oe=5E2C2005)