Schempp-Hirth Ventus
Specifications (Ventus c)
Data from Jane's All the World's Aircraft 1988–89 General characteristics Crew: 1 Length: 6.58 m (21 ft 7 in) Wingspan: 17.6 m (57 ft 9 in) with extensions Wing area: 10.15 m² (109.3 sq ft) with extensions Aspect ratio: 30.2 with extensions Airfoil: Wortmann/Holighaus/Althaus section Empty weight: 243 kg (536 lb) Max takeoff weight: 430 kg (948 lb) Water ballast: 160 l (42 US gal; 35 imp gal) Performance Stall speed: 58 km/h (36 mph; 31 kn) Never exceed speed: 270 km/h (168 mph; 146 kn) in smooth air 200 km/h (110 kn; 120 mph) in rough air 180 km/h (97 kn; 110 mph) on aero-tow 150 km/h (81 kn; 93 mph) on winch launch g limits: +5.3 -2.65 Maximum glide ratio: 49 at 100 km/h (54 kn; 62 mph) fuselage version "a" Rate of sink: 0.54 m/s (106 ft/min) at 75 km/h (40 kn; 47 mph) Wing loading: 33 kg/m² (6.8 lb/sq ft)

Schempp-Hirth Ventus

Section Title: Specifications (Ventus c)
Table Section Text: Data from Jane's All the World's Aircraft 1988–89 General characteristics Crew: 1 Length: 6.58 m (21 ft 7 in) Wingspan: 17.6 m (57 ft 9 in) with extensions Wing area: 10.15 m² (109.3 sq ft) with extensions Aspect ratio: 30.2 with extensions Airfoil: Wortmann/Holighaus/Althaus section Empty weight: 243 kg (536 lb) Max takeoff weight: 430 kg (948 lb) Water ballast: 160 l (42 US gal; 35 imp gal) Performance Stall speed: 58 km/h (36 mph; 31 kn) Never exceed speed: 270 km/h (168 mph; 146 kn) in smooth air 200 km/h (110 kn; 120 mph) in rough air 180 km/h (97 kn; 110 mph) on aero-tow 150 km/h (81 kn; 93 mph) on winch launch g limits: +5.3 -2.65 Maximum glide ratio: 49 at 100 km/h (54 kn; 62 mph) fuselage version "a" Rate of sink: 0.54 m/s (106 ft/min) at 75 km/h (40 kn; 47 mph) Wing loading: 33 kg/m² (6.8 lb/sq ft)

a	b	b/16.6	bT	c	cT	cM

Wing span	15 m (49 ft)	15 m (49 ft)	15 m (49 ft) / 16.6 m (54 ft)	15 m (49 ft) / 16.6 m (54 ft)	15 m (49 ft) / 16.6 m (54 ft) / 17.6 m (58 ft)	15 m (49 ft) / 16.6 m (54 ft) / 17.6 m (58 ft)	15 m (49 ft) / 16.6 m (54 ft) / 17.6 m (58 ft)

Aspect ratio	23.7	23.7	23.7 / 27.7	23.7 / 27.7	23.7 / 27.7 / 30.2	23.7 / 27.7 / 30.2	23.7 / 27.7 / 30.2

Length	6.35 m (20.8 ft)	6.58 m (21.6 ft)	6.58 m (21.6 ft)	6.58 m (21.6 ft)	6.58 m (21.6 ft)	6.58 m (21.6 ft)	6.58 m (21.6 ft)

Wing area	9.51 m2 (102.4 sq ft)	9.51 m2 (102.4 sq ft)	9.51 m2 (102.4 sq ft) / 9.96 m2 (107.2 sq ft)	9.51 m2 (102.4 sq ft) / 9.96 m2 (107.2 sq ft)	9.51 m2 (102.4 sq ft) / 9.96 m2 (107.2 sq ft) / 10.15 m2 (109.3 sq ft)	9.51 m2 (102.4 sq ft) / 9.96 m2 (107.2 sq ft) / 10.15 m2 (109.3 sq ft)	9.51 m2 (102.4 sq ft) / 9.96 m2 (107.2 sq ft) / 10.15 m2 (109.3 sq ft)

Weight empty	240 kg (530 lb) approx.	240 kg (530 lb) approx.	243 kg (536 lb) approx.	240 kg (530 lb) approx. / 243 kg (536 lb) with sustainer removed	240 kg (530 lb) approx. / 243 kg (536 lb)	289 kg (637 lb)	300 kg (660 lb)

Max T/O weight	525 kg (1,157 lb)	525 kg (1,157 lb)	430 kg (950 lb)	525 kg (1,157 lb) / 500 kg (1,100 lb) with sustainer removed	525 kg (1,157 lb) / 500 kg (1,100 lb)	430 kg (950 lb)	430 kg (950 lb)

Max wing loading	55.2 kg/m2 (11.3 lb/sq ft)	55.2 kg/m2 (11.3 lb/sq ft)	43.2 kg/m2 (8.8 lb/sq ft)	55.2 kg/m2 (11.3 lb/sq ft) / 49.3 kg/m2 (10.1 lb/sq ft) with sustainer removed	55.2 kg/m2 (11.3 lb/sq ft) / 49.3 kg/m2 (10.1 lb/sq ft)	42.4 kg/m2 (8.7 lb/sq ft)	49.3 kg/m2 (10.1 lb/sq ft)

Max Power loading	28.1 kg/kW (46.24 lb/hp)	9.62 kg/kW (15.8 lb/hp)

Best glide at 35 kg/m2 (7.2 lb/sq ft)	43.5 at 105 km/h (57 kn; 65 mph)	43.5 at 105 km/h (57 kn; 65 mph)	46.5 at 95 km/h (51 kn; 59 mph)	43 / 49 at 105 km/h (57 kn; 65 mph)	48–49 at 105 km/h (57 kn; 65 mph)

Min sink at 75 km/h (40 kn; 47 mph)	0.58 m/s (114 ft/min)	0.58 m/s (114 ft/min)	0.59 m/s (116 ft/min)	0.62 m/s (122 ft/min) engine retracted

Stalling speed	65 km/h (35 kn; 40 mph)	65 km/h (35 kn; 40 mph)	64 km/h (35 kn; 40 mph)	75 km/h (40 kn; 47 mph) (minimum speed)

Vne	250 km/h (130 kn; 160 mph)	250 km/h (130 kn; 160 mph)	250 km/h (130 kn; 160 mph)	270 km/h (150 kn; 170 mph)	180 km/h (97 kn; 110 mph) power on / 270 km/h (150 kn; 170 mph) engine retracted

Cruise	130 km/h (70 kn; 81 mph)	140 km/h (76 kn; 87 mph)

Climb rate	0.633–1.133 m/s (124.6–223.0 ft/min)	2 m/s (390 ft/min)

Take-off run	280 m (920 ft) / 420 m (1,380 ft) to 15 m (49 ft)

Range	201 km (109 nmi; 125 mi) + (sawtooth)	500 km (270 nmi; 310 mi) (sawtooth) / 320 km (170 nmi; 200 mi) (level)

Endurance	2 hours

Sentence(s)

Schempp-Hirth Ventus BT has a specification of 15m / 16.6m.

final_sentence: Schempp-Hirth Ventus BT has a specification of 15m / 16.6m.