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Grumman OV-1 Mohawk


Battlefield Surveillance Aircraft


United States | 1959



"The Grumman OV-1 Mohawk series saw extensive action in the Vietnam War."



Authored By: Staff Writer | Last Edited: 01/19/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
Development of the OV-1 Mohawk platform stemmed from a joint requirement fielded by both the United States Army and the United States Marine Corps for a "battlefield surveillance aircraft" displaying rugged and versatile qualities on an ever-changing front. Grumman's the twin engine G-134 model proved heartily enough with both branches of service proceeding on the elected design. Though the United States Marine Corps would eventually pull out of the program, the US Army continued on and would field the system to good effect from the Vietnam War all the way through to Operation Desert Storm. The strengths of the system lay in its STOL (Short Take-Off and Landing) performance and ability to carry an array of sophisticated sensors and camera equipment.

The Mohawk fielded two Lycoming turboprop engines, each developing 1,005 horsepower and mounted on a midset-wing monoplane assembly. A highly-identifiable feature of the series was the three-fin tail structure. A crew of two sat side-by-side in an armored cockpit complete with bullet-proof glass. The cockpit offered up outstanding visibility forward, side, up and even downwards to some extent thanks in part to the bulging side windows. Armament was not standard in traditional models though the system was prepared to mount rocket and gun pods as needed on the two underwing hardpoints (one per wing).

The G-134 evolved into nine evaluation models known as the YAO-1 and, later, the YOV-1 series. Initial production models were ordered for the US Army as the OV-1A and centered around day and night visual reconnaissance centering on conventional camera systems. The OV-1B followed soon after, offering up a different suite of radar in the SLAR (Side-Looking Airborne Radar) which were mounted in an notieceable large under-fuselage pod, though this platform was fielded without the optical cameras of the preceding model. The similar OV-1C was next up, fitted with an AAS-24 infrared surveillance system while the definitive OV-1 proved to be the OV-1D featuring improved engine specifications, a side-loading bay door for minimal cargo and additional sensors found in other previous individual models. Previous "B" and "C" models were later brought up to this ultimate standard. Deliveries of some 375 Mohawks continued from 1961 through 1970.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Grumman OV-1D Mohawk Battlefield Surveillance Aircraft.
2 x Lycoming T35-L-701 turboprop engines developing 1,400 horsepower each.
Propulsion
297 mph
478 kph | 258 kts
Max Speed
35,007 ft
10,670 m | 7 miles
Service Ceiling
1,678 miles
2,700 km | 1,458 nm
Operational Range
2,350 ft/min
716 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 Grumman OV-1D Mohawk Battlefield Surveillance Aircraft.
2
(MANNED)
Crew
41.0 ft
12.50 m
O/A Length
48.0 ft
(14.63 m)
O/A Width
12.7 ft
(3.86 m)
O/A Height
11,067 lb
(5,020 kg)
Empty Weight
19,229 lb
(8,722 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
Armament
Available supported armament and special-mission equipment featured in the design of the Grumman OV-1 Mohawk Battlefield Surveillance Aircraft .
None as standard. Provision for rocket pods and gunpods on two underwing hardpoints.
Variants
Notable series variants as part of the Grumman OV-1 Mohawk family line.
G-134 - Grumman Program Model Design Designation; 9 evaluation examples produced.
YAO-1 (YOV-1A) - Initial Evaluation Aircraft Designation; later redesignated to YOV-1.
OV-1A (AO-1AF) - Initial Production Model Designation for US Army usage; day/night visual reconnaissance; conventional camera systems.
JOV-1A - Armed OV-1A and OV-1C models; 169 examples produced.
OV-1B (AO-1BF) - Production Model Designation for US Army usage; SLAR (Side-Looking Airborne Radar) suite carried in large under-underfuselage pod; sans optical cameras.
OV-1C (AO-1CF) - Based on the OV-1B but fitted with an AAS-24 infrared surveillance system.
OV-1D - Definitive Mohawk; improved engine performance; side-loading cargo door; IR, SLAR and optical sensors; B and C models converted to this standard; 37 new-build units with 82 conversions.
RV-1C "Quick Look" ELINT - Dedicated Electronic Surveillance Platform; 2 conversions.
RV-1D "Quick Look II" ELINT - Dedicated Electronic Surveillance Platform; 31 converions.
EV-1D "Quick Look III" ELINT
OV-1E - Proposed Modernized Mohawk Prototype; never produced; single example.
OF-1 - Reserved USMC Designation (USMC pulled out of the OV-1 program).
Operators
Global customers who have evaluated and/or operated the Grumman OV-1 Mohawk. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 375 Units

Contractor(s): Grumman - USA
National flag of Argentina National flag of modern Germany National flag of Israel National flag of South Korea National flag of the United States

[ Argentina; Germany; Israel; South Korea; United States ]
Relative Max Speed
Hi: 300mph
Lo: 150mph
Aircraft Max Listed Speed (297mph).

Graph Average of 225 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
375
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
EarlyYrs
WWI
Interwar
WWII
ColdWar
Postwar
Modern
Future
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Image of the Grumman OV-1 Mohawk
A pair of AH-64 Apache helicopters flies over a Grumman OV-1 Mohawk at rest; color
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Image of the Grumman OV-1 Mohawk
A Grumman OV-1 Mohawk is serviced by her crew; color

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
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.
Going Further...
The Grumman OV-1 Mohawk Battlefield Surveillance Aircraft appears in the following collections:
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