ESDU 69026: Airspeed data for performance calculations.

Abstract:

ESDU 69026 presents means of obtaining airspeed and kinetic pressure information which are needed for performance estimation or reduction purposes. These data apply to pressure heights from -2000 to 105 000 ft. The Mach number range is from 0 to 3.0 and the ranges of equivalent and calibrated airspeeds extend up to l000 kn. The data are presented in two alternative and independent forms. The first form is graphical while the second is semigraphical and requires the user to make a number of simple calculations. The first form is the faster to use but the true airspeed data are restricted to the standard atmosphere. The second form is more general and permits more accurate results to be obtained.

Indexed under:

Details:

Data Item ESDU 69026
Format:	PDF with software with interactive graphs
Status:	Amendment (B), 01 Oct 1992 Published in Release 2000-03 (init)
Previous Releases:	None available
ISBN:	978 1 86246 349 3

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This Data Item is complemented by the following software:

Toolbox Apps

Name

Details

Toolbox ISA Run

Title	International Standard Atmosphere app
Version	1.1
Details	The app evaluates, at a given pressure altitude, pressure, temperature and density (and their corresponding relative values) together with the absolute values of the speed of sound, kinematic and dynamic viscosity and thermal conductivity. It also determines V_TAS, V_EAS, kinetic pressure and unit Reynolds number for a specified Mach number at the given pressure altitude. Calculations are limited to the troposphere and stratosphere in the ISA.

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This Data Item contains 19 interactive graph(s) as listed below.

Graph	Title
Figure 1a - Part 1
Figure 1a - Part 2
Figure 1b
Figure 2a	Relationship between pressure height, mach number and calibrated airspeed
Figure 2b	Relationship between pressure height, mach number and calibrated airspeed
Figure 3a	Scale-altitude correction
Figure 3b	Scale-altitude correction
Figure 4a
Figure 4b
Figure 4c
Figure 4d
Figure 4e
Figure 5a
Figure 5b
Figure 5c
Figure 5d
Figure 5e
Figure 6
Figure 7