TABLE OF CONTENTS
NOTE
The plastic components of your computer may warp if exposed to excessive heat or sunlight . .. . 140? F or 60? C will do it.
JS314294E
? Jeppesen Sanderson, Inc., 1981, 1988. 1987. 1994 All Rights Reserved
55 Inverness Drive East, Engl ew ood, CO 80 11 2?5498
TABLE OF CONTENTS
PART A- CALCULATOR SIDE
PART B-WIND SIDE
Time - Speed - Distance . . . . . . . . . 2 The CR "Wind'' Disc . . . . . . . . . . 30
Fuel Consumption . . . . . . . . . . 4 Addition - Subtraction . . . . . . . . . 32
Conversions . . . . . . . . . . . . . . . . . . 5 Weight of Fuel and Oil . . . . . . . 9
Wind Solution on the CR . . . . . . . 33
Flight Planning with Forecast Winds . . . . . . . . . . . . 37
Altitude . . . . . . . . . . . . . . . . . . . . 11 Density Altitude . . . . . . . . . . . 12
Finding Winds in Flight . . ... . . 41
True Cow-se (Track! and Ground Speed ....... ..... . 44
True Altitude . . . . . . . . . . . . . 12 True Heading and True Air Speed . . . . . . . . . . . . 48
True Air Speed . . . . . . . . . . . . . . 14 OfT-Course Correction . . . . . . . . . 51
The CR Cursor . . . . . . . . . . . . 15 Radius of Action . . . . . . . . . . . . . 53
Mach Number ... . .? . ? .... 17 Wind Components for Takeoff and Landing . . . . . . . 55
Temperature Rise . . . . . . . . . . 20
"Old" Method ? True
Air Speed ..... . ... .... 21
PART C-ANSWERS, DEFINITIONS AND HINTS
P1?essure Pa tt-ern . . . . . . . . . . . . . 23 Answers to Practice Problems . . . 57
Slide Rule Use . . . . . . . . . . . . . . . 25 Definitions . . . . . . . . . . . . . . . . . . 58
Time and Distance to Station ... 28 Some Hints on the CR . . .. ..... 60
PART A-CALCULATOR SIDE
CR-2 and CR-3
0 Unit Index 0 Cursor Hairline 0 Recovery CoefCicient 1.0 0 Nautical-Statute Conversion Arrows 0 Calibrated Air Speed Window G Time Index 0 True Air Speed Windows 0 Base Disc
ii
CR -5
0 Top Disc 0 Temperature Conversion Scale G Indicated Temperature Window 4D Mach Number Window
G) Temperature Rise ScalP
0 True Altitude Window
G) Latitude for Pressure Pattern Scale
1
----
Ex a m p l e
Given: Ground peed ................... 200 ~I P H . Oistance...............................300 Stat. :\l1.
Find: Time e nroute
- Time
Speed - Distance
"Time, speed and di~tanre problems are solved with the CR Computer in the conventional manner ... using the out!>idc scales on the calculator side. For the benefit ol tho~e 'knot so inclined,' the CR is 'knot knecessarily knaULical' and you can get perfectly good an~wers in ~! PH and stattHe. Let's run through ~ome quickies so's you won't figure 'Ole Sharp' is spoofi ng you.
" fi rst a word about reading the sca les o n the C R. Each figure on the outer scales of the compu ter can stand for any number containing the given digits. T he poim marked '40' ca n ~tand lor .I, -1, 40, 400, etc. You must d etermine, from the given problem, which value is correct."
2
Fig. 1
Given: Oi~tanre.........................210 :\[i. Time....... ?????????????????-????50 ~1 in.
Find: Ground ~peed
Fig. 2
A To find di\tanre il you are given ground spe('(l and time, pl~re
time index
oppmite ground speed and read di~tance on outside
,lale oppo~ite time on imide scale.
3
Problems 1 (Sec page 57 ror an~wt?r~)
T im('
c;,mud sp(?(?d
I.
: ~2
180 kt~ .
2.
:I~
3.
:l?ltl kt~.
4.
I :?10
IIi~ .\II'H
5.
:30
fl.
I i i ~II'H
/)istanre
................
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