Tesla TI4676 User Manual

Page 25

SECTION II

DATA CRITERIA

5-3 DATA BASIS

The type of data used is indicated at the bottom of each performance

chart under DATA BASIS. The applicable report and date of the data are

also given. The data provided generally are based on one of three cat-

egories:

Derived From Actual Controlled Testing.

Controlled test data

obtained on a similar unit type.

Calculated Data.

Data based on tests, but not on a similar unit

type placed under a controlled test.

Estimated Data

. Data based on estimates using rules of physics,

mathematics, and electrical engineering principles and concepts, but

not verified by tests.

5-4. SPECIFIC CONDITIONS

The data presented are accurate only for specific conditions listed

under the title of each chart or graph. Variables for which data are

not presented, but which may affect that phase of performance, are dis-

cussed in associated text. Where data is available or reasonable esti-

mates can be made the amount that each variable affect performance will

be given.

5-5. GENERAL CONDITIONS

In addition to the specific conditions, the following general condi-

tions are applicable to the performance data.

Variation in Aircraft.

Power demand differences between indi-

vidual aircraft of the same make and model are known to exist due to

variations in DC electrical system efficiency. These differences,

however, are considered insignificant and are not individually ac-

counted for.

Aircraft Instrument Variations.

The data shown in the perfor-

mance charts do not account for instrument tolerance differences or

inaccuracies.

5-6. DEFINITIONS OF ABBREVIATIONS

Unless otherwise indicated, the abbreviations defined in Chapter 1 will

be applicable to all charts and graphs in this chapter.

5-2