will be -7°; therefore, the true heading will be 340°-7°-333° true. h. Exercises. Find heading and air speed, given scheduled ground speed, course, wind speed, and wind direction:

(1) GS=185, C=110°, WS=35, WD=172° (2) GS=232, C=351°, WS=47, WD=33°

APPENDIX I

MISCELLANEOUS UNITS AND CONVERSION FACTORS

1. Formulas.

a. Area of circle, radius=r, is πr2 (=3.1416).

b. Area of rectangle, width=w, and length=l, is wl.
c. Area of triangle, base=b, and altitude=h, is bh/2.
d. Volume of sphere, radius=r, is 1⁄2 πr3 (π=3.1416).
e. Volume of prism, area of base=A, height=h, is Ah.
2. Conversion factors.

-7.4805 United States gallons (gal.)

1 kilometer per hour=0.62137 statute mile per hour

(km./hr.)

1 knot

=0.53959 knot

=1 nautical mile per hour

=1.853249 km./hr.

=1.151553 mph. or miles/hr.

1 statute mile per hour=1.4666 feet per second

NOTE.-Time given for Tokyo is standard time. Difference in standard time between New York and Tokyo is 14 hours.

5. Densities.

Gasoline (aviation) weighs 45 lb./cu. ft. or 6 lb./gal.

Oil (aviation) weighs 56 lb./cu. ft. or 7.5 lb./gal.

Water weighs 62.4 lb./cu. ft. or 8.34 lb./gal.

Air (dry) weighs .0765 lb./cu. ft. at 15° C. (59° F.) and standard atmospheric pressure.

26

4150 4166 4183 4200

4216

27

28 4472

29

4232
4314 4330 4346 4362
4378 4393 4409 4425 4440
4487 4502 4518 4533 4548 4564 4579 4594 4609 1.5
4624 4639 4654 4669 4683 4698 4713 4728 4742 4757 1.5

4249 4265 4281

4298 1.6

4456 1.6

35 5441 5453 5465
5478
5490 5502 5514 5527 5539 5551 1.2
36 5563 5575 5587 5599 5611 5623 5635 5647 5658 5670 1.2
37 5682 5694 5705 5717 5729 5740 5752 5763 5775 5786 1.2
38 5798 5809 5821 5832 5843 5855 5866 5877 5888 5899 1.1
39 5911 5922 5933 5944 5955 5966 5977 5988 5999 6010 1.1

42

40 6021 6031 6042 6053 6064 6075 6085 6096 6107 6117 1.1
41 6128 6138 6149 6160 6170 6180 6191 6201 6212 6222 1.0
6232 6243 6253 6263 6274 6284 6294 6304 6314 6325 1.0
43 6335 6345 6355 6365 6375 6385 6395 6405
44 6435 6444 6454 6464 6474 6484 6494 6503

6415 6425 1.0

6513 6522 1.0

46

6628 6637

47

48

45 6532 6542 6551 6561 6571 6580 6590 6599 6609 6618 1.0
6646 6656 6665 6675 6684 6693 6702 6712 .9
6721 6730 6739 6749 6758 6767 6776 6785 6794 6803 .9
6812 6821 6830 6839 6848 6857 6866 6875 6884 6893 .9
49 6902 6911 6920 6928 6937 6946 6955 6964 6972 6981

80 9031 9036 9042 9047 9053 9058 9063 9069 9074 9079 .5 81 9085 9090 9096 9101 9106 9112 9117 9122 9128 9133 .5 82 9138 9143 9149 9154 9159 9165 9170 9175 9180 9186 .5 83 9191 9196 9201 9206 9212 9217 9222 9227 9232 9238 .5 84 9243 9248 9253 9258 9263 9269 9274 9279 9284 9289 .5

90

91

9590 9595 9600 9605

92

93

94

9542 9547 9552 9557 9562 9566 9571 9576 9581 9586 .5 9609 9614 9619 9624 9628 9633 .5 9638 9643 9647 9652 9657 9661 9666 9671 9675 9680 .5 9685 9689 9694 9699 9703 9708 9713 9717 9722 9727 .5 9731 9736 9741 9745 9750 9754 9759 9763 9768 9773 .5

9912

9956

9961 9965 9969

9777 9782 9786 9791 9795 9800 9805 9809 9814 9818 .5
9823 9827 9832 9836 9841 9845 9850 9854 9859 9863 .5
9868 9872 9877 9881
9886 9890 9894 9899 9903 9908 .4
9917 9921 9926
9930 9934 9939 9943 9948 9952 .4
9974
9978

9983 9987 9991 9996 .4