Minuteman
|
Last Activity: Today 22:52
About Me
- About Minuteman
- Location
- Austin, TX
- Ratings
- Voted "Best"
- Flight Time
- Every minute
- Aircraft Type
- The ones with wings
-
Signature
"We are Miracle Whip, and we will not tone it down!"
Blog
View Minuteman's BlogRecent Entries
Latest Blog Entry
Posted in Uncategorized
I went out for a run tonight and the mind was wandering:
Why did the SR-71 need ¾ of Arizona to make a 90º turn?
If the aircraft is traveling at M=3.0, that's roughly 30 miles a minute. A standard-rate 90º turn should take 30 seconds, or about 15 miles. 2-pi-r is the circumference of a circle, so a standard-rate turn at Mach 3 should be roughly a 5 nm circle, not 300 nm.
Something don't compute, and its probably that the SR-71 doesn't do standard-rate...
Why did the SR-71 need ¾ of Arizona to make a 90º turn?
If the aircraft is traveling at M=3.0, that's roughly 30 miles a minute. A standard-rate 90º turn should take 30 seconds, or about 15 miles. 2-pi-r is the circumference of a circle, so a standard-rate turn at Mach 3 should be roughly a 5 nm circle, not 300 nm.
Something don't compute, and its probably that the SR-71 doesn't do standard-rate...
Recent Comments
The myths about supersonic...




