Jonker Sailplanes JS-3 Rapture User Manual

JS-MD 3
Aircraft Flight Manual
MD10-AFM-00-001
Issue: 01
Rev. 00
Rev. Date: 14-Feb-20
Page 5-6
Table 5.3-1 gives the coefficients of the second-degree polynomial
approximation of the JS-3’ polar curve in the 15 m and 18 m
configurations for a specific reference mass.
Configuration
15m
18m
Reference mass
450 kg
992 lbs
500 kg
1102 lbs
Polar
coefficients
a
0.9847
0.9233
b
-1.8498
-1.6595
c
1.4745
1.2658
Table 5.3-1
NOTE: The calculated flight polar can be represented by a
second-degree polynomial function. Various flight
computers use these functions and accompanied
coefficients as approximations where glider
performance prediction is required, e.g. to calculate
speed to fly and final glide calculations.

Jonker Sailplanes JS-3 Rapture Specifications

General

Brand	Jonker Sailplanes
Model	JS-3 Rapture
Category	Aircrafts
Language	English