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Author Topic: Republic F-84F Thunderstreak  (Read 13645 times)

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Il2 crazy fan

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Republic F-84F Thunderstreak
« on: September 08, 2013, 10:05:36 AM »

The Republic F-84F Thunderstreak was an American-built swept-wing turbojet fighter-bomber. While an evolutionary development of the straight-wing F-84 Thunderjet, the F-84F was a new design. The RF-84F Thunderflash was a photo reconnaissance version.
In 1949, a swept wing version of the F-84 was created with the hope of bringing performance to the level of the F-86. The last production F-84E was fitted with a swept tail, a new wing with 38.5 degrees of leading edge sweep and 3.5 degrees of anhedral, and a J35-A-25 engine producing 5,300 pound-force (23.58 kN) of thrust.[1] The aircraft was designated XF-96A. It flew on 3 June 1950 with Otto P. Haas at the controls. Although the airplane was capable of 602 knots (693 mph, 1,115 km/h), the performance gain over the F-84E was considered minor.[1] Nonetheless, it was ordered into production in July of 1950 as the F-84F Thunderstreak. The F-84 designation was retained because the fighter was expected to be a low-cost improvement of the straight-wing Thunderjet with over 55 percent commonality in tooling. In the meantime, the USAF, hoping for improved high-altitude performance from a more powerful engine, arranged for the British Armstrong Siddeley Sapphire turbojet engine to be built in the United States as the Wright J65. To accommodate the larger engine, YF-84Fs with a British-built Sapphire as well as production F-84Fs with the J65 had a vertically stretched fuselage, with the air intake attaining an oval cross-section. Production delays with the F-84F forced the USAF to order a number of straight-wing F-84Gs as an interim measure.[1]
Production quickly ran into problems. Although tooling commonality with the Thunderjet was supposed to be 55 percent, in reality only fifteen percent of tools could be reused.[1] To make matters worse, the F-84F utilized press-forged wing spars and ribs. At the time, only three presses in the United States could manufacture these, and priority was given to the Boeing B-47 Stratojet bomber over the F-84.[1] The YJ65-W-1 engine was considered obsolete and the improved J65-W-3 did not become available until 1954. When the first production F-84F finally flew on 22 November 1952, it differed from the service test aircraft. It had a different canopy which opened up and back instead of sliding to the rear, as well as airbrakes on the sides of the fuselage instead of the bottom of the aircraft.[1] The aircraft was considered not ready for operational deployment due to control and stability problems. The first 275 aircraft, equipped with conventional stabilizer-elevator tailplanes, suffered from accelerated stall pitch-up and poor turning ability at combat speeds. Beginning with Block 25, the problem was ameliorated by the introduction of a hydraulically powered one-piece stabilator. A number of aircraft were also retrofitted with spoilers for improved high-speed control. As a result, the F-84F was not declared operational until 12 May 1954.[1]

Design

The Thunderstreak suffered from the same poor takeoff performance as the straight-wing Thunderjet despite having a more powerful engine. In reality, almost 700 pounds-force (3.11 kN) or ten percent of total thrust was lost because the J65 was installed at an angle and its exhaust had a prominent kink. On a hot day, 7,500 feet (2,285 m) of runway were required for takeoff roll.[2] A typical takeoff speed was 160 knots (185 mph, 300 km/h).[2] Like the Thunderjet, the Thunderstreak excelled at cruise and had predictable handling characteristics within its performance envelope. Like its predecessor, it also suffered from accelerated stall pitch-up and potential resulting separation of wings from the airplane. In addition, spins in the F-84F were practically unrecoverable and ejection was the only recourse below 10,000 feet (3,000 m).[2]
Operational history
Project Run In completed operational tests in November 1954 and found the aircraft to be to USAF satisfaction and considerably better than the F-84G. However, ongoing engine failures resulted in the entire fleet being grounded in early 1955. Also, the J65 engine continued to suffer from flameouts when flying through heavy rain or snow.[1] As the result of the problems, the active duty phaseout began almost as soon as the F-84F entered service in 1954, and was completed by 1958. Increased tensions in Germany associated with construction of the Berlin Wall in 1961 resulted in reactivation of the F-84F fleet. In 1962, the fleet was grounded due to the corrosion of control rods. A total of 1,800 man hours were expended to bring each aircraft to full operational capacity.[1] Stress corrosion eventually forced the retirement of ANG F-84Fs in 1971.
On March 9, 1955, Lt. Col. Robert R. Scott, in a F-84F Thunderstreak, set a three hour, 44-minute and 53-second record for the 2,446 mile flight from Los Angeles to New York.[3]
With the appearance of Republic's F-105 Thunderchief, which also used wing-root mounted air intakes, the Thunderstreak became known as the Thud's Mother.[2] The earlier F-84A had been nicknamed the "Hog" and the F-84F "Super Hog," the F-105 becoming the "Ultra Hog".
In what is probably one of the very few air-to-air engagements involving the F-84F, two Turkish Air Force F-84F Thunderstreaks shot down two Iraqi Il-28 Beagle bombers that crossed the Turkish border by mistake during a bombing operation against Iraqi Kurdish insurgents. This engagement took place on 16 August 1962.[4]
The F-84F was retired from active service in 1964, and replaced by the North American F-100 Super Sabre. The RF-84F was replaced by the RF-101 Voodoo in USAF units, and relegated to duty in the Air National Guard. The last F-84F Thunderflash retired from the ANG in 1971. Three Hellenic Air Force RF-84Fs that were retired in 1991 were the last operational F-84s.
Pictures :






Blue print :
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SAS~Malone

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Re: Republic F-84F Thunderstreak
« Reply #1 on: September 08, 2013, 10:26:16 AM »

i'm pretty sure this plane was already made quite a long time ago, or am i going mad.....?
i have a distinct recollection of flying this plane quite a long time ago, not long after the F-84G was released....
can anyone confirm my memories, or the early onset of Alzheimer's..... :P
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duffys tavern

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Re: Republic F-84F Thunderstreak
« Reply #2 on: September 08, 2013, 10:36:40 AM »

I think it was a Frankenplane.


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SAS~Gerax

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Re: Republic F-84F Thunderstreak
« Reply #3 on: September 08, 2013, 10:39:40 AM »

remember this one?
http://il-2-modding.wikispaces.com/F-84F+Thunderstreak

but there was others:

one without slot, had to be choosen in FMB with F-84G
in countries menu; by Glynn in old Days on AAA in Sep09

and one with slot (F-84F-1) for 4.10, let me have a closer look who made it.

just trying:

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Epervier

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Re: Republic F-84F Thunderstreak
« Reply #4 on: September 08, 2013, 10:41:02 AM »

Already exist in my UP2.01 (external Mod) !
19/09/2009 by... unknown  :-X


Quote
Air ini
F84F1_Thunderstreak     air.F84F1 1                           NOINFO  usa01 SUMMER

Plane Ru
F84F1_Thunderstreak  F-84F-1 Thunderstreak, 1953

Weapons Ru

#####################################################################
# F84F1
#####################################################################
F84F1_Thunderstreak.default                        Default
F84F1_Thunderstreak.02x500lbs                      2x500lbs Bombs
F84F1_Thunderstreak.02x500lbs+02x250lbs            2x500lbs Bombs + 2x250lbs Bombs
F84F1_Thunderstreak.02x1000lbs                     2x1000lbs Bombs
F84F1_Thunderstreak.02x1000lbs+02x250lbs           2x1000lbs Bombs + 2x250lbs Bombs
F84F1_Thunderstreak.02x500lbs+08xHVAR              2x500lbs Bombs + 8x5"HVAR
F84F1_Thunderstreak.02x75gal_napalm+08xHVAR        2x75gal Napalm + 8x5"HVAR
F84F1_Thunderstreak.02x75gal_napalm+02x250lbs      2x75gal Napalm + 2x250lb Bombs
F84F1_Thunderstreak.20xHVAR                        20x5" HVAR Rockets
F84F1_Thunderstreak.02xTinyTim                     2xTinyTim
F84F1_Thunderstreak.02xTinyTim+08xHVAR             2xTinyTim + 8x5"HVAR
F84F1_Thunderstreak.02x230gal_tank                 2x230 gal. Droptanks
F84F1_Thunderstreak.none                           Empty
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vpmedia

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Re: Republic F-84F Thunderstreak
« Reply #5 on: September 08, 2013, 10:41:20 AM »

The F-84G version is in DBW but not the F, although it looks like it was released long time ago at AAA by Glynn (GJE52):
http://www.mission4today.com/index.php?name=ForumsPro&file=viewtopic&p=73764

SAS~Gerax

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Re: Republic F-84F Thunderstreak
« Reply #6 on: September 08, 2013, 10:54:23 AM »

Already exist in my UP2.01 (external Mod) !
19/09/2009 by... unknown  :-X

Quote
Air ini
F84F1_Thunderstreak     air.F84F1 1                           NOINFO  usa01 SUMMER

Thats exactly what I have + a mod with a 4.10 FM.
(just tried in DBW, no CTD, weapons OK, flies, but FM needs a rework
as the plane is unable to get airborne (player and AI).
Sadly I have not found out who made this.
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SAS~Malone

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Re: Republic F-84F Thunderstreak
« Reply #7 on: September 08, 2013, 11:04:35 AM »

looking through my oooold UI1.1 install (man, that's a long way back, lol) the only name i can see mentioned anywhere is GJE52, although i am sure that Flakiten was involved with it somewhere along the way.
i'm just glad that my memory still seems to be intact, lol :D
i would recommend having a look at the AAS site, you might find it there somewhere....
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DocPL

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Re: Republic F-84F Thunderstreak
« Reply #8 on: September 09, 2013, 07:24:24 AM »

There is a topic here on Forum  where I also asked for F-84F. SAS~Epervier gave an answer which I quote "  The shame ... I do not remember this post ... 
The only F-84F-1 that I have in my toy box is this : https://www.mediafire.com/?61g8g7qjw6j3nup
Included 26 skins by ??
It has FM of He-162C. 
There is no credit in the readme... at that time there was no war to an oversight like that!
Is that what you wanted? "
There it is.
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Mad026

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Re: Republic F-84F Thunderstreak
« Reply #9 on: September 09, 2013, 10:26:22 AM »

There is a topic here on Forum  where I also asked for F-84F. SAS~Epervier gave an answer which I quote "  The shame ... I do not remember this post ... 
The only F-84F-1 that I have in my toy box is this : https://www.mediafire.com/?61g8g7qjw6j3nup
Included 26 skins by ??
It has FM of He-162C. 
There is no credit in the readme... at that time there was no war to an oversight like that!
Is that what you wanted? "
There it is.

This is the only F84F mod I think, It's quite old now it was one of the first cold war jets! :)
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Il2 crazy fan

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Re: Republic F-84F Thunderstreak
« Reply #10 on: September 10, 2013, 03:08:22 AM »

Ok thanks for the feedback !
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