Aircraft / Aviation Vehicles & Artillery Small Arms Warships & Submarines Military Ranks Military Pay Chart (2024) Special Forces
Aviation / Aerospace

HESA Kowsar (Thunderbolt)

Lightweight Twin-Seat, Twin-Engine Multirole Fighter [ 2019 ]

The HESA Kowsar is yet-another Iranian development of the American F-5 Tiger fighter - serial production is set to begin before the end of 2018.

Authored By: Staff Writer | Last Edited: 05/21/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

The HESA Kowsar (translating to "Thunderbolt") is a twin-seat, twin-engine light fighter developed by local Iranian aero-industry (namely the Iran Aircraft Manufacturing Industrial Company. The illegally-copied design is based in the 1950s-era American Northrop F-5 "Tiger/Freedom Fighter" platform (detailed elsewhere on this site) with capabilities in both air-to-air and air-to-ground sorties (more limited in the latter). Iranian state-run television boasts this aircraft to be of a 100% indigenous effort sporting a multirole radar fit and advanced avionics. A first-flight was recorded in August of 2018.

The aircraft certainly, and rather obviously carries the form and function of the F-5 through-and-through, from its long nose section to its low-mounted, small-surface-area wing mainplanes. The cockpit seats two in tandem under separate, rearward-hinged canopies (the tandem cockpit configuration is used in the American T-38 "Talon" advanced jet trainer built from the F-5 family). Straddling the sides of the fuselage are small semi-circular intakes used to aspirate the twin engine configuration within. The fuselage tapers slightly towards the aft-end of the aircraft to which two separate exhaust nozzles are featured just under the single vertical tail fin. Like the wing mainplanes, the horizontal tailplanes are low-mounted on the design. The mainplanes sport flaps, a swept-back leading edge and a straight trailing edge. Wingtip rail launchers are noted for the carrying of short-ranged Air-to-Air Missiles (AAMs). A tricycle undercarriage is used for ground-running. Of note is the arrestor hook for this land-based aircraft has been retained - this is typically a component used in aircraft carrier-based platforms.

It is assumed the aircraft has the F-5 arrangement of five hardpoints (two under each wing and a centerline spot) for the carrying of AAMs, Air-to-Surface Missiles (ASMs), rocket pods, gun pods, and jettisonable fuel tanks.

Beyond its obvious combat value, the Kowsar is can also be used as an advanced jet trainer featuring the student in the front cockpit and the instructor in the rear - perhaps maintaining full-combat capability. Ejection seats are found at both cockpit positions.

There is not much to suggest that the Kowsar is a "war-winning" combat platform by any regard. It is rooted in a 1950s Cold War-era design philosophy that, though proven over years of service, has seen its best days behind it - particularly in a world where the 5th Generation Fighter is picking up steam through designs such as the Lockheed F-22 "Raptor", the Lockheed F-35 "Lighting II", and the Sukhoi Su-57. The triumph here would be the success of Iranian aero-industry in taking an existing, proven design and re-engineering it for local purposes but little else. Iranian authorities have detailed it as a "deterrence" based in lessons learned from the 1980s conflict with neighboring Iraq.

As it stands, the Kowsar design is wholly unproven (war would be the ultimate testing ground) and there have been outrageous claims by Iranian authorities and state-run television in the past, leaving many observers in the West to doubt many of the proposed capabilities of any one development originating from this gulf power.©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 2018 - The Kowsar fighter was official inaugurated by Iranian officials.

November 2018 - State-run television has reported that the Kowsar lightweight fighter was set to begin serial production for the Islamic Republic of Iran Air Force.


Iran Aircraft Manufacturing Industrial Company (HESA) - Iran
Iran (planned)
Operators National flag of Iran
Service Year
National Origin
Project Status

General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.
Developed to operate in close proximity to active ground elements by way of a broad array of air-to-ground ordnance and munitions options.
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.

47.4 ft
(14.45 meters)
26.7 ft
(8.15 meters)
13.5 ft
(4.10 meters)
9,700 lb
(4,400 kilograms)
Empty Weight
24,725 lb
(11,215 kilograms)
Maximum Take-Off Weight
+15,025 lb
(+6,815 kg)
Weight Difference

ASSUMED: 2 x General Electric J85 turbojet engines developing 3,500lb of dry thrust each and 5,000lb of thrust with afterburning each.
1,056 mph
(1,700 kph | 918 knots)
Max Speed
52,493 ft
(16,000 m | 10 miles)
2,299 miles
(3,700 km | 1,998 nm)
35,000 ft/min
(10,668 m/min)

MACH Regime (Sonic)
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030

2 x 20mm Revolver cannons in nose.

Support for Air-to-Air Mmissiles (AAMs), Air-to-Surface Missiles (AAMs), rocket pods, cannon pods, conventional drop bombs, and jettisonable fuel drop tanks.

7 (including wingtips).

Kowsar - Base Series Name.

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 pioneering aircraft
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 representing modern aircraft
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 Special Forces
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Ukranian-Russian War
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 War
Military lapel ribbon for experimental x-plane aircraft


1 / 1
Image of the HESA Kowsar (Thunderbolt)
Image released from the Tasnim News Agency.

Disclaimer | Privacy Policy | Cookies

2024 Military Pay Chart Military Ranks DoD Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content; site is 100% curated by humans.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org (World Directory of Modern Military Aircraft), WDMMW.org (World Directory of Modern Military Warships), SR71blackbird.org, detailing the history of the world's most iconic spyplane, and MilitaryRibbons.info, cataloguing military medals and ribbons. Special Interest: RailRoad Junction, the locomotive encyclopedia.

©2023 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2023 (20yrs)