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Mach Number
Answers


 Use the definition
of Mach number obtained from the Mach number slide
and the information in the activity to determine the speed of a jet
at Mach 3. ~2220 mph or 3572 km/hr.
 Convert the speed
of sound units of mph to km/hr. ~1191 km/hr.
 Let's find the
top speed of some interesting jets. The maximum Mach number of the jets
listed can be found on the World Wide Web. Use the data to fill in the
Mach number, then compute and fill in the speed in the table below.
Jet

Max Mach Number

Mach Speed, km/hr

B747

.85

1012

F18

2.0

2382

SR71

3.0

3573

 The
X15
was a research aircraft designed and built for NASA. Using its maximum
Mach number (from the World Wide Web), compute its maximum speed.
Max Mach number
= 6.72
Max Speed =
8003 km/hr

Related Pages:
Standards
Activity
Worksheet
Lesson Index
Aerodynamics Index


