| F-84 Thunderjet | |
|---|---|
USAF F-84E Thunderjet | |
| Type | Fighter-bomber |
| Manufacturer | Republic Aviation |
| Designed by | Alexander Kartveli |
| Maiden flight | 28 February 1946 |
| Introduced | November 1947 |
| Primary user | United States Air Force |
| Number built | 7,524 |
| Unit cost | US$237,247 (F-84G)[1] US$769,330 (F-84F) |
| Variants | F-84F Thunderstreak XF-84H Thunderscreech XF-91 Thunderceptor |
The Republic F-84 Thunderjet was an American-built turbojet fighter-bomber aircraft. Ground-attack aircraft are military aircraft designed to attack targets on the ground and are often deployed as Close air support for and in proximity to their own ground forces An aerospace manufacturer is a company or individual involved in the various aspects of designing building testing selling and maintaining Aircraft, Aircraft parts The Republic Aviation Corporation was an American aircraft manufacturer based in Farmingdale Long Island New York. Alexander Kartveli (ალექსანდრე ქართველიშვილი 1896-1974 born Kartvelishvili) was an aircraft engineer and a pioneer of The maiden flight of an Aircraft is the first occasion on which an aircraft leaves the ground of its own accord Events 202 BC - coronation ceremony of Liu Bang as Emperor Gaozu of Han takes place initiating four centuries of the Han Dynasty 's rule This is a list of Aviation -related events from 1946: Events January January 1 - a British South American Airways WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The Republic Aviation Corporation was an American aircraft manufacturer based in Farmingdale Long Island New York. The United States of America —commonly referred to as the TurboJET (噴射飛航 is the brand name for the operations of the Hong Kong -based Shun Tak-China Travel Ship Management Limited (信德中旅船務管理有限公司 Originating as a 1944 United States Air Force proposal for a "day fighter," the F-84 flew in 1946. Although it entered service in 1947, the Thunderjet was plagued by so many structural and engine problems that a 1948 Air Force review declared it unable to execute any aspect of its intended mission and considered cancelling the program. The aircraft was not considered fully operational until the 1949 F-84D model and the design matured only with the definitive F-84G introduced in 1951. In 1954, the straight-wing Thunderjet was joined by the swept-wing F-84F Thunderstreak fighter and RF-84F Thunderflash photo reconnaissance aircraft. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout Reconnaissance (also scouting) is a military and medical term denoting exploration conducted to gain information
The Thunderjet became the Air Force's primary strike aircraft during the Korean War, flying 86,408 missions and destroying 60% of all ground targets in the war as well as eight Soviet-built MiG fighters. The Korean War refers to a period of military conflict between North Korean and South Korean regimes with major hostilities lasting from June 25 1950 until the JSC "RSK "MiG" or Russian Aircraft Corporation MiG in full (formerly Mikoyan or Mikoyan-i-Gurevich Design Bureau, Микоян Over half of the 7,524 F-84s produced served with NATO nations, and it was the first aircraft to fly with the U.S. Air Force Thunderbirds demonstration team. The North Atlantic Treaty The Thunderbirds are the Air Demonstration Squadron of the US The USAF Strategic Air Command had F-84 Thunderjets in service from 1948 through 1957. The Strategic Air Command (SAC was both a major command and a "specified command" in the U
The F-84 was the first production fighter aircraft to utilize in-flight refueling and the first fighter capable of carrying a nuclear bomb. Modified F-84s were used in several unusual projects, including the FICON and Tom-Tom dockings to the B-29 and B-36 bomber motherships, and the experimental XF-84H Thunderscreech supersonic turboprop. The FICON ( Fi ghter Con veyor program was conducted by the United States Air Force in the 1950s to test the feasibility of a B-36 Peacemaker bomber WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout A turboprop engine is a type of aircraft powerplant that uses a Gas turbine engine to drive a Propeller.
The F-84 nomenclature can be somewhat confusing. The straight-wing F-84A to F84-E and F84-G models are called the Thunderjet. The F-84F Thunderstreak and RF-84F Thunderflash are a different airplane with swept wings. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The XF-84H Thunderscreech was an experimental turboprop version of the F-84F. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The F-84F swept wing version was intended to be a small variation on the normal Thunderjet with only a few different parts, so it kept the basic F-84 number. Production delays on the F-84F resulted in another order of the straight-wing version; this was the F-84G.
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In 1944, Republic Aviation's chief designer, Alexander Kartveli, began working on a turbojet-powered replacement for the P-47 Thunderbolt piston-engined fighter. This is a list of Aviation -related events from 1944: Events January January 11 - in one of their largest air raids to The Republic Aviation Corporation was an American aircraft manufacturer based in Farmingdale Long Island New York. Alexander Kartveli (ალექსანდრე ქართველიშვილი 1896-1974 born Kartvelishvili) was an aircraft engineer and a pioneer of TurboJET (噴射飛航 is the brand name for the operations of the Hong Kong -based Shun Tak-China Travel Ship Management Limited (信德中旅船務管理有限公司 WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The initial attempts to redesign the P-47 to accommodate a jet engine proved futile due to the large cross-section of the early centrifugal compressor turbojets. Centrifugal compressor, (sometimes referred to as radial compressors) are a special class of radial-flow work-absorbing Turbomachinery that includes pumps Instead, Kartveli and his team designed a brand-new aircraft with a streamlined fuselage largely occupied by an axial compressor turbojet engine and fuel stored in rather thick unswept wings. Axial compressors are rotating aerofoil based compressors in which the working fluid principally flows parallel to the axis of rotation TurboJET (噴射飛航 is the brand name for the operations of the Hong Kong -based Shun Tak-China Travel Ship Management Limited (信德中旅船務管理有限公司 [1]
On 11 September 1944, the United States Army Air Forces released General Operational Requirements for a day fighter with a top speed of 600 mph (521 knots, 966 km/h), combat radius of 705 miles (612 nmi, 1,135 km), and armament of either six 0. Events 9 - The Battle of the Teutoburg Forest ends 506 - The Bishops of Visigothic Gaul Year 1944 ( MCMXLIV) was a Leap year starting on Saturday (link will display full calendar of the Gregorian calendar. The United States Army Air Forces ( USAAF) was the military aviation arm of the United States of America during and immediately after World War II. A mile is a unit of Length, usually used to measure Distance, in a number of different systems including Imperial units United States A nautical mile or sea mile is a unit of Length. It corresponds approximately to one minute of Latitude along any meridian. 50 inch (12. Inches redirects here To see the Les Savy Fav album see Inches. 7 mm) or four 0. 60 inch (15. 2 mm) machine guns. In addition, the new aircraft had to use the General Electric TG-180 axial turbojet which entered production as Allison J35. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout
On 11 November 1944, Republic received an order for three prototypes of the new XP-84. Events 308 - The Congress of Carnuntum: Attempting to keep peace within the Roman Empire, the leaders of the Tetrarchy declare Year 1944 ( MCMXLIV) was a Leap year starting on Saturday (link will display full calendar of the Gregorian calendar. [1] Since the design promised superior performance to the Lockheed-built P-80 Shooting Star and Republic had extensive experience in building single-seat fighters, no competition was held for the contract. The Lockheed Corporation (originally Loughead Aircraft Manufacturing Company was an American aerospace company founded in 1912 which merged with Martin Marietta WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The name Thunderjet was chosen to continue the Republic Aviation tradition started with the P-47 Thunderbolt while emphasizing the new method of propulsion. On 4 January 1945, even before the aircraft took to the air, the USAAF expanded its order to 25 service test YP-84As and 75 production P-84Bs (later modified to 15 YP-84A and 85 P-84B). Events 46 BC - Titus Labienus defeats Julius Caesar in the Battle of Ruspina. Year 1945 ( MCMXLV) was a Common year starting on Monday (link will display the full calendar
Meanwhile, wind tunnel testing by the National Advisory Committee for Aeronautics revealed longitudinal instability and stabilizer skin buckling at high speeds. A wind tunnel is a research tool developed to assist with studying the effects of air moving over or around solid objects [1] The weight of the aircraft, a great concern given the low thrust of early turbojets, was growing so quickly that the USAAF had to set a gross weight limit of 13,400 pounds (6,080 kg). The pound or pound-mass (abbreviation lb, lbm, or sometimes in the United States #) is a unit of Mass The results of this preliminary testing was incorporated into the third prototype, designated XP-84A, which was also fitted with a more powerful J35-GE-15 engine with 4,000 pound-force (17. This article deals with the unit of force For the unit of mass see Pound (mass. 8 kN) of thrust. [1]
The first prototype XP-84 was transferred to Muroc Army Air Field (present-day Edwards Air Force Base) where it flew for the first time on 28 February 1946 with Major William A. Edwards Air Force Base is a United States Air Force base located on the border of Kern County and Los Angeles County California in the Antelope Events 202 BC - coronation ceremony of Liu Bang as Emperor Gaozu of Han takes place initiating four centuries of the Han Dynasty 's rule Year 1946 ( MCMXLVI) was a Common year starting on Tuesday (link will display full 1946 calendar of the Gregorian calendar. Lien at the controls. It was joined by the second prototype in August; both aircraft flying with J35-GE-7 engines producing 3,745 pound-force (16. 66 kN) of thrust. The 15 YP-84As delivered to Patterson Field (present-day Wright-Patterson Air Force Base) for service tests differed from XP-84s by having an upgraded J35-A-15 engine, carrying six 0. Wright-Patterson Air Force Base is a United States Air Force base located in Greene and Montgomery counties eight miles (13 km) northeast of 50 inch (12. 7 mm) Browning machine guns (four in the nose and one in each wing root), and having the provision for wingtip fuel tanks holding 226 US gallon (870 L) each. This article is about the.50 caliber M2 machine gun For the.30-06 M2 machine gun see M1919 Browning machine gun. A gallon is a measure of Volume. It is in current use in the United States and still has limited use in many other English-speaking countries
Due to delays with delivery of jet engines and production of the XP-84A, the Thunderjet had undergone only limited flight testing by the time production P-84Bs began to roll out of the factory in 1947. In particular, the impact of wingtip tanks on aircraft handling was not thoroughly studied. This proved problematic later. [1]
After the creation of the United States Air Force by the National Security Act of 1947, the Pursuit designation was replaced with Fighter, and the P-84 became the F-84. The National Security Act of 1947, Pub L No 235 80 Cong 61 Stat
F-84s were assigned to the 27th Fighter Wing, 27th Fighter Escort Wing, 27th Strategic Fighter Wing, 31st Fighter Escort Wing, 127th Fighter Day Wing, 127th Fighter Escort Wing, 127th Strategic Fighter Wing, 407th Strategic Fighter Wing and the 506th Strategic Fighter Wing of the Strategic Air Command from 1947 through 1958. The 27th Special Operations Wing ( 27 SOW) is a United States Air Force unit and the host wing at Cannon Air Force Base, New Mexico. The Strategic Air Command (SAC was both a major command and a "specified command" in the U [2]
The F-84B, which differed from YP-84A only in having faster-firing M3 machine guns, became operational with 14th Fighter Group at Dow Field, Bangor, Maine in December 1947. Bangor is the County seat of Penobscot County, Maine, United States, and the major commercial and cultural center for eastern and northern Maine Flight restrictions followed immediately, limiting maximum speed to Mach 0.8 due to control reversal, and limiting maximum acceleration to 5. Mach number (\mathrm{Ma} or M (generally ˈmɑːk sometimes /ˈmɑːx/ or /ˈmæk/ is the speed of an object moving through air or any Fluid Control reversal is an adverse effect on the controllability of Aircraft. 5 g (54 m/s²) due to wrinkling of the fuselage skin. g-force (also G-force, g-load) is a measurement of an object's Acceleration expressed in g s To compound the problem, parts shortages and maintenance difficulties earned the aircraft the nickname "Mechanic's Nightmare". [1] On 24 May 1948, the entire F-84B fleet was grounded due to structural failures. Events 1218 - The Fifth Crusade leaves Acre for Egypt. 1276 - Magnus Ladulås is crowned Year 1948 ( MCMXLVIII) was a Leap year starting on Thursday (link will display the 1948 calendar of the Gregorian calendar.
A 1948 review of the entire F-84 program discovered that none of the F-84B or F-84C aircraft could be considered operational or capable of executing any aspect of their intended mission. The program was saved from cancellation because the F-84D, whose production was well underway, had satisfactorily addressed the major faults. A fly-off against the F-80 revealed that while the Shooting Star had a shorter takeoff roll, better low altitude climb rate and superior maneuverability, the F-84 could carry a greater warload, was faster, had better high altitude performance and greater range. [1] As a temporizing measure, the USAF in 1949 committed US$8 million to implement over 100 upgrades to all F-84Bs, most notably reinforcing the wings. Despite the resultant improvements, the F-84B was withdrawn from active duty by 1952. [1]
The F-84C utilized a somewhat more reliable J35-A-13 engine and had some engineering refinements. Being virtually identical to the F-84B, the C model suffered from all of the same defects and underwent a similar structural upgrade program in 1949. All F-84Cs were withdrawn from active service by 1952. [1]
The structural improvements were factory-implemented in the F-84D, which entered service in 1949. Wings were covered with thicker aluminum skin, the fuel system was winterized and capable of using JP-4 fuel, and a more powerful J35-A-17 engine with 5,000 pound-force (22. JP-4, or JP4 (for "Jet Propellant" was a Jet fuel, specified in 1951 by the U 2 kN) thrust was fitted. It was discovered that the untested wingtip fuel tanks contributed to wing structural failures by inducing excessive twisting during high-g maneuvers. [1] To correct this, small triangular fins were added to the outside of the tanks. The F-84D was phased out of USAF service in 1952 and left Air National Guard service in 1957. The Air National Guard ( ANG), often referred to as the Air Guard, is the air force militia organized by each of the several states and [1]
The first effective and fully-capable Thunderjet was the F-84E model which entered service in 1949. The aircraft featured the J35-A-17 engine, further wing reinforcement, a 12 inch (305 mm) fuselage extension in front of the wings and 3 inch (76 mm) extension aft of the wings to enlarge the cockpit and the avionics bay, an A-1C gunsight with APG-30 radar, and provision for an additional pair of 230 US gallon (870 L) fuel tanks to be carried on underwing pylons. A gallon is a measure of Volume. It is in current use in the United States and still has limited use in many other English-speaking countries [1] The latter increased the combat radius from 850 to 1,000 miles (740 to 870 nmi, 1,370 to 1,610 km).
Despite the improvements, the in-service rates for the F-84E remained poor with less than half of the aircraft operational at any given time. [1] This was primarily due to severe shortage of spares for the Allison engines. The expectation was that F-84Es would fly 25 hours per month, accumulating 100 hours between engine overhauls. The actual flight hours for Korean War and NATO deployments rapidly outpaced the supply and Allison's ability to manufacture new engines. The North Atlantic Treaty [1] The F-84E was withdrawn from USAF service in 1956, lingering with ANG units until 1959.
The definitive straight-wing F-84 was the F-84G which entered service in 1951. The aircraft introduced a refueling boom receptacle in the left wing, autopilot, Instrument Landing System, J35-A-29 engine with 5,560 pound-force (24. An autopilot is a mechanical electrical or hydraulic system used to guide a vehicle without assistance from a human being The Instrument Landing System (ILS is a ground-based Instrument approach system that provides precision guidance to an Aircraft approaching a Runway 7 kN) of thrust, and the ability to carry a single Mark 7 nuclear bomb. Mark 7 " Thor " (or Mk-7')was the first tactical Nuclear bomb adopted by US armed forces [1] The F-84G was retired from USAF in the mid-1960s.
Starting in the early 1960s, the aircraft was widely used by the Portuguese Air Force during the Portuguese Colonial War in Africa. The Portuguese Air Force ( PoAF) (Força Aérea Portuguesa FAP) is the Air force of Portugal. The Portuguese Colonial War (Guerra Colonial also known as the Overseas War in Portugal (Guerra do Ultramar or in the former colonies as the
Typical of most early jets, the Thunderjet's takeoff performance left much to be desired. In hot Korean summers with a full combat load, the aircraft routinely required 10,000 feet (3,000 m) of runway for takeoff even with the help of RATO bottles (two or four of these were carried, each producing 1,000 pound-force (4. JATO may also refer to the group Jews Against the Occupation. 4 kN) of thrust for 14 seconds). [1] All but the lead aircraft had their visibility obscured by the thick smoke from the rockets. Early F-84s had to be pulled off the ground at 140 knots (160 mph, 260 km/h) with the control stick held all the way back. Landings were made at a similar speed (for comparison, the P-51 Mustang landed at approximately 100 knots (120 mph, 190 km/h)). Despite the "hot" landing speeds, the Thunderjet was easy to fly on instruments and crosswinds did not present much of a problem. [3]
Thanks to the thick straight wing the Thunderjet rapidly reached its Mach 0. Mach number (\mathrm{Ma} or M (generally ˈmɑːk sometimes /ˈmɑːx/ or /ˈmæk/ is the speed of an object moving through air or any Fluid 82 limitation at full throttle and low altitude. The aircraft had sufficient power to fly faster, but exceeding the Mach limit at low altitudes resulted in a violent pitch-up and structural failure causing the wings to break off. [3] Above 15,000 feet (4,600 m), the F-84 could be flown faster but at the expense of severe buffeting. Fortunately, the airspeed was sufficiently easy to control to make safe dive bombing from 10,000 ft (3,000 m) possible. A foot (plural feet or foot; symbol or abbreviation ft or sometimes &prime – the prime symbol) is a non-SI unit [3] The top speed limitation proved troublesome against Soviet Mikoyan-Gurevich MiG-15s in Korea. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout Slower than the MiG, the F-84 was also unable to turn tightly with a maximum instantaneous-turn load of only 3 Gs followed by rapid loss of airspeed. One F-84E pilot credited with two MiG kills achieved his second victory by intentionally flying his aircraft into pitch-up. [3] The MiGs chasing him were unable to follow the violent maneuver and one crashed into the ground. Luckily for the pilot, the aircraft did not disintegrate but the airframe did suffer heavy warping. The F-84 was a stable gun platform and the computing gunsight aided in accurate gunnery and bombing. Pilots praised the aircraft for Republic's legendary ruggedness. [3]
Pilots nicknamed the Thunderjet "The Lead Sled. "[2] It was also called "The Iron Crowbar," "a hole sucking air," "The Hog " ("The Groundhog") and "The World's Fastest Tricycle" as a testament to its long takeoff rolls. [2] F-84 lore stated that all aircraft were equipped with a "sniffer" device that, upon passing V2, would look for the dirt at the end of the runway. In Aviation, V-speeds or Velocity-speeds are standard terms used to define Airspeeds important or useful to the operation of Aircraft, such As soon as the device could smell the dirt, the controls would turn on and let the pilot fly off the ground. In the same vein, it was suggested a bag of dirt should be carried in the front landing gear well. Upon reaching V2, the pilot would dump the dirt under the wheels, fooling the sniffer device. [2]
The Thunderjet had a distinguished record during the Korean War. The Korean War refers to a period of military conflict between North Korean and South Korean regimes with major hostilities lasting from June 25 1950 until the Although the F-84B and F-84C could not be deployed because their J35 engines had a service life of only 40 hours, the F-84D and F-84E entered combat with 27th Fighter Escort Group on 7 December 1950. Events 43 BC - Marcus Tullius Cicero assassinated 1696 - Connecticut Route 108, one of the oldest highways This is a list of Aviation -related events from 1950: Events Arrow Air is founded March [1] The aircraft were initially tasked with escorting the B-29 Superfortress bombers. The first Thunderjet air-to-air victory was scored on 21 January 1951 at the cost of two F-84s. Events 1189 - Philip II of France and Richard I of England begin to assemble troops to wage the Third Crusade. This is a list of Aviation -related events from 1951: Events February February 21 - an English Electric Canberra [2] The F-84 was a generation behind the swept-wing Soviet Mikoyan-Gurevich MiG-15 and outmatched, especially when the MiGs were flown by Soviet pilots, and the MiG counter-air mission was soon given to the F-86 Sabre. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout Like its famous predecessor, the P-47, the F-84 switched to the low-level interdiction role at which it excelled.
The F-84 flew a total of 86,408 missions, dropping 111,171,000 pounds (50,427 metric tons) of bombs and 12,258,000 pounds (5,560 metric tons) of napalm. This article is about the tonne or metric ton For other tons see Ton. Napalm is the name given to any of a number of Flammable Liquids used in Warfare often jellied Gasoline. [2] The USAF claimed F-84s were responsible for 60 percent of all ground targets destroyed in the war. Notable F-84 operations included the 1952 attack on the Sui-ho Dam. The attack on the Sui-ho Dam was the collective name for a series of air attacks by United Nations Command air forces on 13 Hydroelectric generating facilities in During the war, the F-84 became the first USAF fighter to utilize aerial refueling. Aerial refueling, also called air refueling, in-flight refueling ( IFR) air-to-air refueling ( AAR) or tanking, is In aerial combat, F-84 pilots were credited with eight MiG-15 kills against a Soviet-claimed loss of 64 aircraft. The total losses were 335 F-84D, E and G models. [2]
By the mid-1960s, the F-84/F-84F was replaced by the F-100 Super Sabre and the RF-84F by the RF-101 Voodoo in USAF units, being relegated to duty in the Air National Guard. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The Air National Guard ( ANG), often referred to as the Air Guard, is the air force militia organized by each of the several states and The last F-84F Thunderflash retired from the ANG in 1971. This is a list of Aviation -related events from 1971: Events January January 6 - the United States Marine Corps Three Hellenic Air Force RF-84Fs that were retired in 1991 were the last operational F-84s. The Hellenic Air Force ( HAF) (in Πολεμική Αεροπορία ( ΠΑ) Polemikí Aeroporía, literally "Military Aviation" Year 1991 ( MCMXCI) was a Common year starting on Tuesday (link will display full calendar of the Gregorian Calendar.
The costs are in approximately 1950 United States dollars and have not been adjusted for inflation. The United States dollar ( sign: $; code: USD) is the unit of Currency of the United States; it has also been [1]
| F-84B | F-84C | F-84D | F-84E | F-84G | F-84F | RF-84F | |
|---|---|---|---|---|---|---|---|
| Airframe | 139,863 | 139,863 | 150,846 | 562,715 | 482,821 | ||
| Engine | 41,654 | 41,654 | 41,488 | 146,027 | 95,320 | ||
| Electronics | 7,165 | 7,165 | 4,761 | 9,623 | 21,576 | ||
| Armament | 23,559 | 23,559 | 37,433 | 41,713 | 63,632 | ||
| Ordnance | 2,719 | 9,252 | 4,529 | ||||
| Flyaway cost | 286,407 for the first 100 163,994 for the next 141 | 147,699 | 212,241 | 212,241 | 237,247 | 769,300 | 667,608 |
| Cost per flying hour | 390 | ||||||
| Maintenance cost per flying hour | 185 | 185 |
Data from Encyclopedia of US Air Force Aircraft and Missile Systems[1]
General characteristics
Performance
Armament
Avionics
Related development
Comparable aircraft