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At a glance
Measured figures
HTT-40 · Length
DisputedHTT-40 · Length
Configuration
| Specification | HAL HTT-40 | KAI KT-1 Woongbi |
|---|---|---|
| Type | Basic training aircraft[source] | Basic trainer and light attack aircraft[source] |
| National origin | India[source] | South Korea[source] |
| Manufacturer | Hindustan Aeronautics Limited[source] Hindustan Aeronautics Limited (HAL)[source]HTT-40 | Korea Aerospace Industries[source] |
| Designer | Aircraft Research and Design Centre |
KT-1 · Length
Single source10.3 m (33 ft 10 in)[source]
Empty; HTT-40 / Basic Empty Mass · Empty mass
Single sourceGross; HTT-40 · Gross weight
Single sourceGross; HTT-40 / Normal Training Configuration Mass · Gross weight
Single sourceMaximum take-off; HTT-40 / Maximum Take-off Mass · Max takeoff weight
Single source2,800 kg (6,173 lb)[source]
2414 kg[source]HTT-40 / Basic Empty Mass
3040 kg[source]HTT-40 / Maximum Take-off Mass
2960 kg[source]HTT-40 / Normal Training Configuration Mass
Empty; KT-1 · Empty weight
Single sourceGross; KT-1 · Gross weight
Single sourceMaximum; HTT-40 · Maximum speed
DisputedMaximum; HTT-40 / Max level Speed · Maximum speed
Manufacturer claimMaximum; HTT-40 / Max permissible Speed · @ 6g
Manufacturer claimMaximum; HTT-40 · Maximum speed
Disputed400 km/h (249 mph, 216 kn)[source]
450 kmph @ 6g[source]HTT-40 / Max permissible Speed
407 kmph[source]HTT-40 / Max level Speed
450 km/h[source]HTT-40
Maximum; KT-1 · at 4,570 m (14,993 ft)
Single source644 km/h (400 mph, 348 kn) at 4,570 m (14,993 ft)[source]
HTT-40 · Range
Cross-checkedHTT-40 · Range
Cross-checked1,000 km (621 mi, 540 nmi)[source]
1009 km[source]HTT-40
Ferry; KT-1 · at 6,100 m (20,013 ft) with max internal and external fuel (30 minutes reserve)
Single sourceKT-1 · at 7,620 m (25,000 ft) with max internal fuel (30 minutes reserve)
Single sourceHTT-40 · 1 × Honeywell Garrett TPE331-12B turboprop (1,100 shp) derated to
Single sourceHTT-40 · 950 shp
Single source1 × Honeywell Garrett TPE331-12B turboprop, 834 kW (1,100 shp) derated to 708 kW (950 shp)[source]
1100 Shp[source]HTT-40 / Max Power
KT-1 · 1 × Pratt & Whitney Canada PT6A-62 turboprop engine
Single source1 × Pratt & Whitney Canada PT6A-62 turboprop engine, 708.4 kW (950.0 hp)[source]
KT-1 · Wing area
Single source16.01 m 2 (172.3 sq ft)[source]
KT-1 · (3,500 ft/min) at sea level, clean
Single source17.78 m/s (3,500 ft/min) at sea level, clean[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
Agency for Defence Development Korea Aerospace Industries[source] |
| Status | In service[source] | In service[source] |
|---|
| Primary user | Indian Air Force[source] | — |
|---|
| Number built | 3 (excluding 2 prototypes)[source] | 186[source] |
|---|
| Introduction date | 2026 (planned)[source] | 2000[source] |
|---|
| First flight | 31 May 2016[source] | November 1991[source] |
|---|
| Developed from | HPT-32 Deepak[source] | — |
|---|
| Fuel capacity | 450 kg[source] | 551 L (146 US gal; 121 imp gal) in two wing tanks with provision for two 189 L (50 US gal; 42 imp gal) drop-tanks on the inboard pylons[source] |
|---|
| Propellers | 4-bladed[source] | 4-bladed Hartzell HC-E4N-2/E9512CB-1, 2.44 m (8 ft 0 in) diameter constant-speed fully feathering reversible propeller[source] |
|---|
| Never exceed speed | 450 km/h (279 mph, 243 kn)[source] | 648 km/h (403 mph, 350 kn)[source] |
|---|
| g limits | +6/-3[source] | + 7 - 3.5 (aerobatic, clean)[source] |
|---|
| Internal fuel mass | 460 kg[source]HTT-40 / Internal fuel mass | — |
|---|
| Take-off Distance | 785 meter[source]HTT-40 | — |
|---|
| Landing Distance | 987 meter[source]HTT-40 | — |
|---|
| Time to Climb 3 km | 7.05 min[source]HTT-40 | — |
|---|
| Engine | Honeywell TPE331-12B Turboprop engine[source]HTT-40 | — |
|---|
| Primary users | — | Republic of Korea Air Force Indonesian Air Force Turkish Air Force Peruvian Air Force Senegalese Air Force[source] |
|---|
| Manufactured | — | 1999–present[source] |
|---|
| Aspect ratio | — |
|---|
| Airfoil | — | root: NACA 63-218 ; tip: NACA 63-212[source] |
|---|
| Maximum fuel weight | — | 408 kg (899 lb)[source] |
|---|
| Stall speed | — | 132 km/h (82 mph, 71 kn) flaps down[source] |
|---|
| Wing loading | — | 206.8 kg/m 2 (42.4 lb/sq ft) with external stores[source] |
|---|
| Power/mass | — | 0.2137 kW/kg (0.1300 hp/lb)with external stores[source] |
|---|
Maximum take-off; KT-1 · (and Maximum Landing Weight)with external stores
Single source