300 , 000 | PN 280, 000 Pp MS Note: T Bars show amount of air sampled in the ~, altitude increment using optimum impactor size NO from Figure 3. 260 , 000 D7 5 MW 223 pounds Ib. Asymptote 240,000} Altitude Sampling Starts, ft 220,000 SY wa,00 PS Pounds sampled from altitude to DN 180,000 > 160,000 _™ | 100,000 feet ! SY ! 75 Lb. —~ | | NN | <Q Constant tip — speed | f 140,000;— 77 1b = | Eq. 4 ) 120,000k— 113 1p. oN 102 Lb. 100, 000 | M 0 50 100 150 200 | 250 300 Air Sampled (lbs) Fig. 4 -- Pounds of Air Sampled versus Altitude 109