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HAL HTT-40

India (2018)
Picture of HAL HTT-40 Tandem-Seat Basic Trainer Aircraft

The HAL HTT-40 is a planned, in-development basic trainer set to serve with the Indian Air Force before the end of the decade.


Detailing the development and operational history of the HAL HTT-40 Tandem-Seat Basic Trainer Aircraft.  Entry last updated on 6/10/2016. Authored by Staff Writer. Content ©www.MilitaryFactory.com

Hindustan Aeronautics Limited (HAL) of India is advancing a basic trainer aircraft for the Indian Air Force (IAF) through the "HTT-40" initiative. This falls in line with a more self-sustained Indian military industry that has since produced various homegrown products such as the "Arjun" Main Battle Tank (MBT) and the INSAS automatic weapon now making up portions of the Indian military inventory. As of this writing (2016), the HTT-40 remains in active development with a single prototype having been completed (rolled out in early February 2016). The product is expected to succeed the since-retired fleet of HAL HPT-32 "Deepak" trainers of the late-1970s.

Additionally, the HTT-40 series will be fielded alongside a fleet of 113 Swiss-originated Pilatus PC-7 Mk II series trainers - Indian authorities citing cost-per-unit as the primary reason for this. Of note is that the initial HAL design offered for the HTT-40 was rejected by the Indian Air Force.

The HTT-40's design follows traditional basic trainer qualities such as a twin-seat, tandem cockpit set under a largely unobstructed canopy offering excellent vision out-of-the-cockpit. The turboprop engine is installed in the nose and will power a four-bladed propeller. The wings are mounted low at midships and are straight with clipped tips. The tail unit is made up of a single vertical fin and low-set horizontal planes. A tricycle undercarriage (retractable) also figures into the design.

Sixty-eight HHT-40 aircraft have been ordered by the Indian Air Force from an announcement made in February of 2015. During June of that same year, the American-originated Honeywell Garrett TPE331-12B series turboprop engine (of about 950-1,000 horsepower output) was selected by HAL to power the new trainer. The first prototype was unveiled on February 2nd, 2016 showcasing a commitment to the HHT-40 initiative on the part of HAL.

As proposed, the HHT-40 will feature a maximum speed of 375 miles per hour with a range out to 620 miles. Its service ceiling is set to reach just under 20,000 feet. A light attack function may also be added to the base design allowing the platform to carry gun pods, rocket pods and conventional drop bombs.

Basic trainers are used by modern military air services to introduce "green" airmen to the basics of flight before the transition can be made to more advanced jet-powered trainers. If successful, the HHT-40 stands to enjoy a long history with the IAF and may also evolved into a marketed export product.

May 2016 - An HTT-40 prototype completed a first-flight on May 31st, 2016 with promising results. The flight lasted 30 minutes.

Any available statistics for the HAL HTT-40 Tandem-Seat Basic Trainer Aircraft are showcased in the areas immediately below. Categories include basic specifications covering country-of-origin, operational status, manufacture(s) and total quantitative production. Other qualities showcased are related to structural values (namely dimensions), installed power and standard day performance figures, installed or proposed armament and mission equipment (if any), global users (from A-to-Z) and series model variants (if any).






Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed Rating
Hi: 400mph
Lo: 200mph
    This entry's maximum listed speed (373mph).

    Graph average of 300 miles-per-hour.
City-to-City Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the HAL HTT-40's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
1
1


  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
Small airplane graphic
  Compare this entry against other aircraft using our Comparison Tool  
National Flag Graphic
Origin: India
Year: 2018
Type: Tandem-Seat Basic Trainer Aircraft
Manufacturer(s): Hindustan Aeronautics Limited (HAL) - India
Production: 1
Global Operators:
India
Historical Commitments / Honors:

Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.
Measurements and Weights icon
Structural - Crew, Dimensions, and Weights:
Unless otherwise noted the presented statistics below pertain to the HAL HTT-40 model. Common measurements, and their respective conversions, are shown when possible.

Operational
CREW


Personnel
2


Dimension
LENGTH


Feet
32.81 ft


Meters
10 m


Dimension
WIDTH


Feet
32.81 ft


Meters
10 m


Dimension
HEIGHT


Feet
10.66 ft


Meters
3.25 m


Weight
EMPTY


Pounds
4,409 lb


Kilograms
2,000 kg


Weight
LOADED


Pounds
6,173 lb


Kilograms
2,800 kg

Engine icon
Installed Power - Standard Day Performance:
1 x Honeywell Garrett TPE331-12B turboprop engine developing 950 to 1,000 horsepower.

Performance
SPEED


Miles-per-Hour
373 mph


Kilometers-per-Hour
600 kph


Knots
324 kts


Performance
RANGE


Miles
621 mi


Kilometers
1,000 km


Nautical Miles
540 nm


Performance
CEILING


Feet
19,685 ft


Meters
6,000 m


Miles
3.73 mi


Performance
CLIMB RATE


Feet-per-Minute
3,000 ft/min


Meters-per-Minute
914 m/min

Supported Weapon Systems:

Graphical image of an aircraft machine gun pod
Graphical image of an aircraft rocket pod
Graphical image of an aircraft conventional drop bomb munition
Armament - Hardpoints (2):

Typically none. For weapons training or light attack, gun pods, rocket pods, and conventional drop ordnance can be fitted.
Variants: Series Model Variants
• HTT-40 - Base Series Designation