Some Obscurish facts
#1476
The fastest and highest flying airplane ever built is the SR-71 Blackbird. A commercial passenger jet typically cruises at 35,000 feet (about 7 miles) and just over 500 miles per hour. The Blackbird can fly at over 80,000 feet (40 miles altitude, just 10 miles short of outer space) and 2,000 miles per hour (mach 3). Even in the very thin air at that altitude, the special titanium skin of the delta wing, twin engine, black aircraft, heats up to over 500 degrees Fahrenheit. The skin requires up to one-half hour after landing to cool off enough that ground crews can service it. At 80,000 feet, the sky looks different. In the middle of the day it can range in color from very dark blue to almost black
The fastest and highest flying airplane ever built is the SR-71 Blackbird. A commercial passenger jet typically cruises at 35,000 feet (about 7 miles) and just over 500 miles per hour. The Blackbird can fly at over 80,000 feet (40 miles altitude, just 10 miles short of outer space) and 2,000 miles per hour (mach 3). Even in the very thin air at that altitude, the special titanium skin of the delta wing, twin engine, black aircraft, heats up to over 500 degrees Fahrenheit. The skin requires up to one-half hour after landing to cool off enough that ground crews can service it. At 80,000 feet, the sky looks different. In the middle of the day it can range in color from very dark blue to almost black