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Aviation / Aerospace

Bell OH-58 Kiowa


Armed Scout and Reconnaissance / Light Attack Helicopter [ 1969 ]



The Bell OH-58 Kiowa light helicopter series has seen a successful operational tenure beginning in the late 1960s.



Authored By: Staff Writer | Last Edited: 08/26/2022 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

GO TO SPECIFICATIONS [+]
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The Bell OH-58 Kiowa has seen a long, successful and extended service life with the US Army (and others) since its inception in May of 1969. The type was a further development of the civilian Bell Model 206 "JetRanger" / "LongRanger" multi-role helicopter platform - first flying on December 8th, 1962. The Bell 206 proved hugely successful in its civilian guises that some 7,300 were eventually produced. The US Army selected the Bell 206 as the basis for the Kiowa series through their Light Observation Helicopter program, this selection spawning, in turn, the equally successful militarized version known as the OH-58 "Kiowa Warrior". Some 2,200 Kiowas were eventually delivered to the US Army and allied forces worldwide. The mount has proven indispensible in the armed reconnaissance role, artillery observation role and when working in conjunction with fast-moving cavalry formations involving infantry fighting vehicles.

Externally, the Kiowa presents a streamlined and lightweight form. The cockpit is held well-forward on the fuselage and seats the pilot and co-pilot/observer. The cockpit provides for excellent forward viewing thanks to its large forward windscreens and removable automobile-style hinged side doors. To the rear of the cockpit is the passenger cabin that sports exit-entry doors and room for an additional two or three personnel or two medical litters. The engine is mounted atop and to the rear of the passenger cabin, powering the main rotor blades. In the OH-58D model (detailed below), the identifiable Mast Mounted Sight (MMS) is installed atop the main rotor mast. The slim empennage extends out from the rear fuselage and fits a pair of horizontal planes midway aft. At the extreme end of the empennage is a vertical tail fin facing starboard and the two-bladed tail rotor facing portside. The Kiowa does not have a standard powered wheeled undercarriage but instead makes use of a rather traditional and simplistic heavy duty landing skid system braced at two positions along the fuselage underside. The aircraft's inherent quick set-up capabilities require a preparation time of just ten minutes from unloading to flight.

The Kiowa was originally known under the Bell model designation of "206A" and first flight was recorded on January 10th, 1966. Production of militarized Kiowas began that same year and would run into 1989, covering various types and marks to suit mission need, technological advances or customer requirements.

The initial OH-58 production model became the "OH-58A" which was a dedicated light observation platform with seating for four and was only partially armed when it saw service in the Vietnam War. Armament could be either an M134 Minigun or M129 40mm automatic grenade launcher and was consistent with weaponry as found on other armed US Army helos in the conflict. The OH-58A was also accepted into service with the Canadian Army and these took on the designation of "COH-58A", later becoming the "CH-136". The OH-58A was fitted with a single Allison T63-A-700 series turboshaft engine of 317 shaft horsepower which provided for a top speed of 138 miles per hour and a cruise speed of 117 miles per hour. Range was out to 300 miles with a service ceiling of approximately 19,000 feet. "OH-58B" was used to designate export models for Austria.

OH-58Cs were given a more powerful engine, IR suppression and revised forward windscreens. Its cockpit was also redesigned to an extent and night vision support was introduced. The OH-58C models were also the first of the lineage with provision for the short-ranged AIM-92 "Stinger" anti-aircraft missile to which a pair of these could be mounted along hardpoints at the fuselage sides. This provided for a mobile air-based enemy aircraft/helicopter deterrent for cavalry forces lacking such defense.

The OH-58D became the definitive mark of the Kiowa production line, first flying in prototype form on October 6th, 1983. The OH-58D arose out of the US Army's "Army Helicopter Improvement Program" (AHIP) of 1979 to which Bell faced off against a modified Hughes OH-6 Cayuse. Bell ultimately nabbed the defense contract and the OH-58D legacy was born, the aircraft entering service in December of 1985. It was given a new engine and gearbox as well as a four-bladed main rotor assembly (previous versions only fielded a two-bladed system) and was intended as an unarmed scout. The most distinctive feature of this model mark became its McDonnell Douglas Astranautics Mast Mounted Sight (MMS) which appeared as nothing more than a sphere atop a mast which was fitted atop the main rotor mast. The MMS itself was a collection of equipment and lenses encompassing a laser range-finder / laser designator, thermal imaging and television optics. Internally, crews were greeted with an upgraded digital cockpit that introduced Multi-Function Displays for both cockpit positions. In fact, the OH-58D became the first US Army helicopter to field an "all glass" cockpit. Interestingly, the old-style analog gauges and instruments were retained in the event of a failure to the digital wares. An APR-39 indicator could alert pilots to enemy guided missile launches directed at the aircraft. The pilot and co-pilot positions featured redundant controls as in most helicopters.

The OH-58D gave rise to the 406CS "Combat Scout" for Saudi Arabian export. These were naturally stripped of valuable technological components and, as such, fitted a Saab-branded "HeliTOW" system to replace the MMS. The 406CS could then be armed as needed by the Saudi Army with missiles, machine guns or rocket pods. With development of the RAH-66 Comanche light attack helicopter still ongoing at this time, it was always held that the OH-58D would serve as a stop-gap solution until the former could overtake the latter's place in the US Army inventory.©MilitaryFactory.com
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The OH-58D "Kiowa Warrior" was fitted with a Rolls-Royce T703-AD-700A (or Allison 250-C30R/3) turboshaft engine of 650 horsepower. Maximum speed was 149 miles per hour with a cruise speed of 127 miles per hour. Range was out to 345 miles and the service ceiling was now down to 15,000 feet. Armament selection included the AGM-114 "Hellfire" guided anti-tank missiles, Hydra 70 series high-explosive unguided rockets, 12.7mm heavy caliber machine guns (in M296 or M3P mounts) and the aforementioned AIM-92 "Stinger" air-to-air missile (the latter since dropped from active use with Kiowa Warriors).

Initially, it was expected that nearly 600 existing OH-58A and OH-58C models would be upgraded to the newer OH-58D standard but less than 500 were eventually contracted for the change. Additionally, the original unarmed nature of the OH-58D was soon changed to that of armed light scout with some 188 examples becoming "Kiowa Warriors". To date, the OH-58D has seen a variety of helpful upgrades to its existing design. These have included a folding horizontal tailplanes, collapsible main rotor blades (all blades folding to the rear, over the tail unit), improved communications and "squatting" wheeled landing gear (replacing the landing skids) for easing ground handling and storage in hangars and C-class transport aircraft. The MMS is removable as well for a lower profile and can be stored along the side of the Kiowa fuselage on a special support jig.

The "OH-58F" designation is a proposed modernization program designation that is intending to keep the OH-58 series airborne into the next decade - presumably up to 2025 according to sources. The type is expected to introduce additional proven systems to help broaden the OH-58s self-supportive nature and battlefield reach as well as enhance performance and crew survivability.

The designation of "OH-58X" was used for an abandoned OH-58D initiative that would have added limited stealth characteristics and a tech-heavy McDonnell Douglas Electronic Systems chin mount (for FLIR and night piloting) along with other internal system upgrades though some related "Stealth Warrior" OH-58Ds were eventually generated. These have seen operations in Iraq and sport pointier nose assemblies, vent intake covers, radar-absorbing coating and various other minor internal and external differences.

In all, the OH-58 family has been featured in the air arms of Australia, Austria, Canada, Taiwan, Dominican Republic, Mexico, Saudi Arabia, the United Arab Emirates and the United States. The United States Army currently utilizes OH-58A, OH-58C and OH-58D "Kiowa Warrior" models in its stable though all OH-58D Kiowa Warriors serve with the 6th and 17th Cavalry Regiments.

American OH-58s first received their baptism of fire in the Vietnam War where the helicopter formally became a proven battlefield commodity. The initial Kiowas began arriving in Southeast Asia in August of 1969 and served side-by-side with the competing Hughes OH-6A "Cayuse" helicopters. Additional combat exploits found the OH-58 operating over the Persian Gulf during the Iran-Iraq War in Operation Prime Chance, defending shipping (oil tanker vessels) in the region - particularly targeting Iranian Navy gunboats operating aggressively in Gulf waters. Success in the armed role and delays to the RAH-66 Comanche light attack helicopter program encouraged further development of the Kiowa into the dedicated armed scout ("Kiowa Warrior"). Operation Just Cause was another call to action with OH-58s serving alongside Bell AH-1 "Cobra" attack helicopters. Beyond that, Kiowas have seen extended service over the skies over volatile Somalia and were used as part of the NATO coalition in both Bosnia and Kosovo. More recently, the OH-58 was fielded in anger during the 2001 American invasion of Afghanistan and the 2003 American invasion of Iraq where it has had to survive both insurgent attacks and debilitating sand storms alike.

Interestingly, both the RAH-66 Comanche and Bell ARH-70 light helicopters were, at one point or another, intended to replace the 1960s-era OH-58. However, both of these programs have since been outright cancelled by the American government due to ballooning project costs and delays (the RAH-66 was cancelled in 2004 and the ARH-70 in 2008 - the ARH-70 itself being an intended replacement for the RAH-66), leaving the OH-58 - more or less - in firm control of its short-term future, hence modernization programs to help keep her a viable battlefield implement for years to come.

Tunisia is set to receive twenty-four ex-U.S. Army OH-58D helicopters in a U.S. Army drawdown of the type. The service is expected to use AH-64D/E Apache attack helicopters, coupled with RQ-7 Shadow UAV elements, to fulfill the armed aerial scout role. Some 300 OH-58D systems are expected to be retired by the U.S. Army.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

August 2016 - Croatia has received its initial batch of ex-U.S. Army OH-58D Kiowa Warrior helicopters. Five were transported aboard a USAF Reserve Command Lockheed C-5B Galaxy airlifter. The deal includes sixteen Kiowa Warriors as well as simulation gear and spare parts.

September 2017 - The United States Army has made its last flight (September 19th) with a Bell OH-58D Kiowa Warrior helicopter, bringing an end to a storied career that has spanned over three decades (some 32 years total). the fleet will be replaced in service by Airbus Helicopters UH-72 Lakotas and Boeing AH-64 Apaches. Complete removal of the Kiowa Warrior platform from the U.S. Army inventory is set for 2019.

January 2018 - The Greek Army is expected to finalize its bit to acquire some seventy OH-58D Kiowa Warrior light helicopters. Initial Operating Capability (IOC) of the refurbished fleet is expected for 2019.

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Specifications



Service Year
1969

Origin
United States national flag graphic
United States

Status
ACTIVE
In Active Service.
Crew
2

Production
2,200
UNITS


Bell Helicopter Textron - USA
(View other Aviaton-Related Manufacturers)
National flag of Australia National flag of Austria National flag of Canada National flag of Croatia National flag of the Dominican Republic National flag of Greece National flag of Portugal National flag of the Kingdom of Saudi Arabia National flag of Taiwan National flag of Tunisia National flag of the United States Australia; Austria; Canada; Croatia; Dominican Republic; Greece (probable); Portugal; Saudi Arabia; Taiwan; Tunisia; United States
(OPERATORS list includes past, present, and future operators when applicable)
Ground Attack (Bombing, Strafing)
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.
Close-Air Support (CAS)
Developed to operate in close proximity to active ground elements by way of a broad array of air-to-ground ordnance and munitions options.
Intelligence-Surveillance-Reconnaissance (ISR), Scout
Surveil ground targets / target areas to assess environmental threat levels, enemy strength, or enemy movement.
Special Forces
Serving Special Forces / Special Operations elements and missions.


COUNTERMEASURES
Survivability enhanced by way of onboard electronic or physical countermeasures enacted by the aircraft or pilot/crew.


Length
34.4 ft
(10.48 m)
Width/Span
35.0 ft
(10.67 m)
Height
12.9 ft
(3.93 m)
Empty Wgt
3,289 lb
(1,492 kg)
MTOW
5,501 lb
(2,495 kg)
Wgt Diff
+2,211 lb
(+1,003 kg)
(Showcased structural values pertain to the Bell OH-58D Kiowa Warrior production variant)
Installed: 1 x Allison T703-AD-700 (Allison 250-C30R) turboshaft engine generating 650shp and driving a four-blade main rotor and two-blade tail rotor.
Max Speed
131 mph
(211 kph | 114 kts)
Ceiling
15,000 ft
(4,572 m | 3 mi)
Range
257 mi
(413 km | 765 nm)
Rate-of-Climb
1,540 ft/min
(469 m/min)


♦ 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


(Showcased performance specifications pertain to the Bell OH-58D Kiowa Warrior production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)
Dependent upon production model and operating country. OH-58D mission-specific weapons loadout may consist of any combination of the following:

2 x 7.62mm Machine gun pods.
2 x 7.62mm Minigun pod.
2 x 12.7mm Machine gun pods.
2 x Seven-round Hydra 70 rocket pods.
4 x AGM-114C Hellfire anti-tank missiles.
2 x Stinger AAMs (since discontinued).


Supported Types


Graphical image of an aircraft medium machine gun
Graphical image of an aircraft heavy machine gun
Graphical image of an aircraft Gatling-style rotating gun
Graphical image of an aircraft machine gun pod
Graphical image of an aircraft air-to-surface missile
Graphical image of an aircraft anti-tank guided missile
Graphical image of aircraft aerial rockets
Graphical image of an aircraft rocket pod


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 2


OH-58A - Four-Seat Observation Platform; optional minigun fitting.
COH-58A - Canadian Designation of OH-58A.
CH-136 - Canadian Redesignation of COH-58A.
OH-58B - Austrian Air Force Export Model.
OH-58C - Improved engine; IR suppression; revised instrument panel; night vision support; provision for AIM-92 Stinger anti-aircraft missiles.
OH-58C/S - Stinger-armed OH-58C models
OH-58D - Fitted with mast-mounted sight; new four-blade main rotor system; revised transmission system; digital cockpit.
OH-58D "Kiowa Warrior" - Armed Conversion Model Designation; support for rocket pods, Hellfire AT missiles, Stinger AAMs and various gun pods; uprated transmission system; lighter structure design; IR jammer and RWR; increased MTOW; fitted with laser warning receiver.
OH-58X - Proposed (ultimately dropped) Dedicated Night Flying Model; fitted with chin-mounted specialized night flight systems; GPS.
406CS "Combat Scout" - Saudi Arabian Export Model Designation; delivered sans mast-mounted sight and some avionics; fitted with Saab-Emerson HeliTOW sight instead.
AH-58D - US Army designation for armed OH-58D model for use by Task Force 118 in Operation Prime Chance.
OH-58F - Proposed modernization program; upgraded cockpit and systems.


General Assessment
Firepower  
Performance  
Survivability  
Versatility  
Impact  
Values are derrived from a variety of categories related to the design, overall function, and historical influence of this aircraft in aviation history.
Overall Rating
The overall rating takes into account over 60 individual factors related to this aircraft entry.
78
Rating is out of a possible 100 points.
Relative Maximum Speed
Hi: 150mph
Lo: 75mph
This entry's maximum listed speed (131mph).

Graph average of 113 miles-per-hour.
City-to-City Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Bell OH-58D Kiowa Warrior operational range when compared to distances between major cities (in KM).
Max Altitude Visualization
Small airplane graphic
Design Balance
The three qualities reflected above are altitude, speed, and range.
Aviation Era Span
Pie graph section
Pie graph section
Showcasing era cross-over of this aircraft design.
Unit Production (2,200)
2200
36183
44000
Compared against Ilyushin IL-2 (military) and Cessna 172 (civilian).
>>

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Images Gallery



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Image of the Bell OH-58 Kiowa
Front right side view of a Bell OH-58D Kiowa Warrior helicopter
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Image of the Bell OH-58 Kiowa
A soldier examines the Mast Mounted Sight atop a Bell OH-58D Kiowa Warrior
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Image of the Bell OH-58 Kiowa
An OH-58D Kiowa Warrior comes in for a landing
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Image of the Bell OH-58 Kiowa
Rear right side view of a howvering Kiowa Warrior; note colorful IR suppressor
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Image of the Bell OH-58 Kiowa
Front view of an armed Kiowa Warrior helicopter
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Image of the Bell OH-58 Kiowa
A Bell OH-58D Kiowa Warrior hovers during exercises
7 / 15
Image of the Bell OH-58 Kiowa
A sandstorm in Iraq has completely blanketed this OH-58D Kiowa Warrior - someone left the doors open as well
8 / 15
Image of the Bell OH-58 Kiowa
Close-up detail view of the Mast Mounted Sight of a Bell OH-58 Kiowa Warrior
9 / 15
Image of the Bell OH-58 Kiowa
Close-up detail view of the forward windscreens of a Kiowa Warrior
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Image of the Bell OH-58 Kiowa
Rear right side view of a Kiowa Warrior in flight
11 / 15
Image of the Bell OH-58 Kiowa
Rear left underside view of a passing Kiowa Warrior
12 / 15
Image of the Bell OH-58 Kiowa
Front left view of an incoming Kiowa Warrior scout helicopter
13 / 15
Image of the Bell OH-58 Kiowa
Front right underside view of an incoming OH-58 Kiowa Warrior helicopter
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Image of the Bell OH-58 Kiowa
Left side profile view of an early OH-58 Kiowa helicopter
15 / 15
Image of the Bell OH-58 Kiowa
Front left side view of an early-form Bell OH-58 Kiowa light helicopter

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