Homework 1
Due: Wed Sept 7
(late due to Labor Day holiday)
1.
Read Ch 1 of Anderson. You will need to use other references to look up most of the
numbers I ask for below.
Cite your references.
2.
What is the density of air and water at standard conditions, in MKS units and English
units? What is the ratio of the density of water to air?
3.
What is the kinematic viscosity of water, air, and motor oil, in MKS and English (foot,
lbm, sec) units? What is the ratio of the kinematic viscosities of air and oil to water?
4.
What is the standard atmospheric pressure in MKS units? What is it in psi? What is the
pressure in air at 30,000 ft (according to the standard atmosphere)?
5.
What is the speed of sound in MKS units in standard air? What is your Mach number if
you are driving along the road at 30 mph?
What is the speed of sound in air at 30,000 ft
(according to the standard atmosphere)? What is the airspeed of a 747 flying at 30,000 ft
at Mach .87?
6.
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 Fall '09
 Aerodynamics, Imperial units, mks, MKS Units

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