[jf1981]

HE-111

1) 27 secs for decreasing speed from 300 to 200 km/h at constant alt 500 m.

2) Descending from 500 m to zero measured at 160 km/h (just above stalling speed) : 2'10"
Gliding ratio approx 1/11
Descent ratio 3,8 m/s

3) Same as 2) measured at 200 km/h : 1'37"
Gliding ratio approx 1/11
Descent ratio 5,1 m/s

4) Same as 2) measured at 250 km/h : 1'07"
Gliding ratio approx 1/9
Descent ratio 7,5 m/s

Bleinheim IV
1) 25"
2) Glide at 150 km/h, 500m-zero 1'45"
Gliding ratio approx 1/9
Descent ratio 4,8 m/s

Spitfire
1) 20"
2) Glide at 150 km/h, 500m-zero 1'50"
Gliding ratio approx 1/9,5
Descent ratio 4,5 m/s

BR.20
3) Glide at 200 km/h, 500m-zero 1'15"
Gliding ratio approx 1/8
Descent ratio 6,7 m/s

4) Glide at 250 km/h, 500m-zero 50'
Gliding ratio approx 1/7
Descent ratio 10 m/s

JU-88
3) Glide at 220 km/h, 500m-zero 55'
Gliding ratio approx 1/8
Descent ratio 6,7 m/s

4) Glide at 250 km/h, 500m-zero 50'
Gliding ratio approx 1/7
Descent ratio 10 m/s

G.50
3) Glide at 200 km/h, 500m-zero 56'
Gliding ratio approx 1/6
Descent ratio 8,9 m/s

Gliding at constant speed as smoothly as possible, power off. Fuel full, no bombs.
Rate of descent is maybe more interesting than gliding ratio since I measured it as close from stalling speed, unfavour of gliding ratio I assume.