4Worksheet for eveluating number of subjects/repeat.
Kaz Shimada 10/6/94
1. Purpose of study
To understand how a pilot (flying and not flying) align their
head during actual flight.
2. Hyothesis
Ho: Head of pilots do not roll (relative to cockpit) during
aircraft roll (VFR).
3. Experimental design
independent variable:
aircraft bank angle
flying or not flying
use or no use of attitude indicator
dependent variable:
head roll angle relative to cockpit
aircraft bank angle:
with attitude indicator
flying
45, -30, -20, -10, -15, -5, 0, +5, +10, +15, +20, +30, +45 deg
not flying 45, -30, -20, -15, -10, -5, 0, +5, +10, +15, +20,
+30, +45 deg
without attitude indicator
flying
45, -30, -15, 0, +15, +30, +45
not flying 45, -30, -15, 0, +15, +30, +45
(discrete numbers)
head roll:
one degree step; 0 - +/-~30 deg
number of subjects: ~5 ? each subject
will
1. fly, repeat each aircraft roll 5 ? times
2. not fly, repeat each aircraft roll 5 ? times
(order of flight and roll angle randomized)
(subject is always in the left seat)
ANOVA
subject x (fly or not) x bank angle
5
2
13?
X(use or no use of attitude indicator) ?
a=0.1
b=0.2
m1-m0= 5 deg
d= ~ 8 deg
n = ?
n= SQUARE ( (Za-Zb)d/(m1-m0) )
= SQUARE ( (1.645 + 0.85)x8/5) )
= 15.9
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