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Airbus Helicopters H135


Light Utility Helicopter (LUH)


France | 1996



"Over 1,000 of the Airbus Helicopters H135 light utility systems have been manufactured since service introduction in 1996."



Authored By: Staff Writer | Last Edited: 05/31/2024 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
Seeking to succeed its successful, yet aging, line of Bo 105 light utility, twin-engine helicopters, the Eurocopter (now Airbus Helicopters) "EC135" was born from the Bo 108 prototype and has become a market success in its own right. The Bo 108, originally headed by Messerschmitt-Bolkow-Blohm (MBB) of West Germany, was drawn up as a technology demonstrator becoming something of an evolved form of the earlier Bo 105. A first-flight was recorded on February 15th, 1994 and service introduction followed in 1996 with over 1,000 being built since 1995. The militarized variant has become the "EC635" product detailed elsewhere on this site.

The Bo 108 began as a test program through and through. Relying on proven facets of the Bo 105, this gave engineers the freedom to incorporate smaller revisions to the overall design and led to the incorporation of a hingeless main rotor assembly, broadened use of composite construction, a more streamlined transmission arrangement, digital avionics fit in the cockpit and a bearingless conventional tail rotor unit. Power came from 2 x Allison 250-C20R-3 turboshaft engines seated over the passenger cabin. The front of the aircraft was heavily glazed as in the Bo 108 and a fixed landing skid acted as the undercarriage.

By early 1991, the Bo 108 program proved its worth and led to MBB pushing the design to a market product stage. It was also decided to rely on a different engine fit - be it the French Turbomeca "Arrius" series or a turboshaft offered by American-based Pratt & Whitney (PW206). A second prototype went airborne on June 5th, 1991 with a pair of Arrius engines in place.

The emergence of the Eurocopter brand label saw MBB and Aerospatiale both merged under it and, perhaps most important to the new helicopter program, this provided engineers unfettered access to the Aerospatiale-designed "Fenestron" shrouded tail rotor. In this arrangement, a multi-bladed unit sat within a fixed housing buried within the vertical tail fin promising reduced noise levels and optimal efficiency at the cost of complexity. With that, the Bo 108 was revised with the tail unit technology and given the new Eurocopter designation of "EC135". First flight of this product came on February 15th, 1994 and certification followed in June of 1996. Since both of the aforementioned engine fits proved successful in testing, both were offered to market customers in separate variants.

Like other helicopters of this weight class, the EC135 went on to find service careers in civilian, governmental and military circles around the world. Military operators included Australia, Brazil, Gabon, Germany, Ireland, Japan, Morocco, and Spain. Police and government security forces also took to the type in considerable numbers as showcased from its usage in the skies over Argentina and Australia to Turkey and the United States.

Several variants of the EC135 base design have been realized led by the initial EC135 P1 with its Pratt & Whitney engines of 621 horsepower each. The EC135 T1 fits the Arrius engine of 583 horsepower each and these have been followed by EC135 P2 and EC135 T2 with uprated engines from PW and Turbomeca respectively. Modern production versions carry the distinguishing "+" in their designation (i.e. "EC135 P2+") and the more powerful models are EC135 P3 and EC135 T3. A military training model is available as the TH-135 (based on the EC135 T2+) and the formal military model is the evolved EC635 / H135M, this offering originally developed against a Portuguese Army requirement.

The Eurocopter name is now a subsidiary of Airbus Group which uses Airbus Helicopters as its helicopter branch brand label. As such, the EC135 is now refered to as the H135.

Content ©MilitaryFactory.com; No Reproduction Permitted.

May 2016 - it was announced that Airbus Helicopters would provide twenty-nine H135 series helicopters to the UK's Defense Helicopter Flying School through the Ascent consortium. This deal also adds three H145 series helicopters.

June 2017 - Work is underway to allow for local Chinese production of the H135 product. These are intended to serve police and medical services in the country.

February 2018 - Airbus has delivered it 1,300th example of the H135 helicopter.

February 2020 - The Brazilian Navy has taken delivery of its first H135 helicopter (under the service designation of "UH-17"). Three will ultimately make up the stock and see operations in the Antarctic cold weather environment and be equipped with Search & Rescue (SAR) gear for the role.

February 2022 - The UK has selected the H135 series to succeed its aging line of French Gazelle light helicopters.

July 2022 - London's Air Ambulance has selected the H135 series over the competing Leonardo AW109 Trekker type to succeed an aging line of MD902 helicopters. The announcement was made at Farnborough 2022.

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Airbus Helicopters H135 Light Utility Helicopter (LUH).
2 x Safran Helicopter Engines (Turbomeca) "Arrius" 2B2+ turboshaft engines developing 633 horsepower each OR 2 x Pratt & Whitney Canada PW206B3 turboshaft engines developing 621 horsepower each and driving four-bladed main rotor and shrouded multi-bladed tail rotor.
Propulsion
180 mph
290 kph | 157 kts
Max Speed
20,013 ft
6,100 m | 4 miles
Service Ceiling
395 miles
635 km | 343 nm
Operational Range
1,500 ft/min
457 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Airbus Helicopters H135 Light Utility Helicopter (LUH).
1
(MANNED)
Crew
33.5 ft
10.20 m
O/A Length
33.5 ft
(10.20 m)
O/A Width
11.5 ft
(3.51 m)
O/A Height
3,208 lb
(1,455 kg)
Empty Weight
6,415 lb
(2,910 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Variants
Notable series variants as part of the Airbus Helicopters H135 family line.
H135 - Revised designation under Airbus Helicopters brand label.
EC135 - Original Series Designation.
EC135 P1 - 2 x Pratt * Whitney Canada PW206B engines of 621 horsepower each.
EC135 T1 - 2 x Turbomeca Arrius 2B1 / 2B1A / 2B1A1 engines of 583 horsepower each.
EC135 P2 - PW206B2 engines of 621 horsepower each.
EC135 T2 - Arrius 2B2 engines of 606 horsepower each.
EC135 P2+ (EC135 P2i) - PW206B2 engines of 667 horsepower each.
EC135 T2+ (EC135 T2i) - Arrius 2B2 engines of 634 horsepower each.
EC135 P2+ (EC135 P2e) - Increased MTOW.
EC135 T2+ (EC135 T2e) - Increased MTOW.
EC135 P3 - PW206B3 engines of 708 horsepower each
EC135 T3 - Arrius 2B2Plus engines of 660 horsepower each.
EC635 (H135M) - Militarized variant.
TH-135 - Military trainer variant.
UH-17 - Brazilian Navy designation.
Operators
Global customers who have evaluated and/or operated the Airbus Helicopters H135. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 1,000 Units

Contractor(s): Airbus Helicopters (Formerly Eurocopter / Messerschmitt-Bolkow-Blohm, MBB - Germany) - France / Helibras - Brazil
National flag of Argentina National flag of Australia National flag of Austria National flag of Brazil National flag of Canada National flag of Croatia National flag of Czechia National flag of Gabon National flag of modern Germany National flag of Ireland National flag of modern Japan National flag of Lithuania National flag of Morocco National flag of the Netherlands National flag of Norway National flag of Poland National flag of Portugal National flag of Romania National flag of Slovenia National flag of Spain National flag of Sweden National flag of Turkey National flag of the United Kingdom National flag of the United States

[ Argentina; Austria; Australia; Brazil; Canada; Croatia; Czech Republic; Gabon; Germany; Ireland; Japan; Lithuania; Morocco; Netherlands; Norway; Poland; Portugal; Romania; Slovenia; Spain; Sweden; United Kingdom; Turkey; Untied Kingdom; United States ]
Relative Max Speed
Hi: 200mph
Lo: 100mph
Aircraft Max Listed Speed (180mph).

Graph Average of 150 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
1000
36183
44000
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
Aviation Timeline
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Image of the Airbus Helicopters H135
Image from official Airbus Helicopters marketing material.
2 / 2
Image of the Airbus Helicopters H135
Image from official Airbus Helicopters marketing material.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
MEDEVAC
SEARCH & RESCUE
TRANSPORT
RECONNAISSANCE
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Similar
Developments of similar form-and-function, or related, to the Airbus Helicopters H135 Light Utility Helicopter (LUH).
Going Further...
The Airbus Helicopters H135 Light Utility Helicopter (LUH) appears in the following collections:
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