Mirage F1 projects

The AVON was proposed for and tested in the Mirage III and still in production for civilian platforms until 1974, could this have been a suitable engine for the Mirage F1? Its later versions seem to offer significant performance advantages over the ATAR including the 09K50.
 
The AVON was proposed for and tested in the Mirage III and still in production for civilian platforms until 1974, could this have been a suitable engine for the Mirage F1? Its later versions seem to offer significant performance advantages over the ATAR including the 09K50.

Comparison between the two most powerful, production versions of the ATAR and Avon as well as the M53 since it was also on offer:

ATAR 9K50
Avon Mk.302
M53-P2
Diameter
0.786m (30.9")​
0.907m (35.7")​
0.796m (31.33")​
Length
6.589m (259.4")​
3.2m (126")​
5.07m (199.6")​
Weight
1582kg (3488 lb)​
1,310 kg (2,890 lb)​
1,515 kg (3,340 lb)​
Thrust (Dry)
49.2 kN (11,055 lbf)​
56.5 kN (12,690 lbf)​
64 kN (14,300 lbf)​
Thrust (Wet)
70.6 kN (15,873 lb)​
72.8 kN (16, 360 lb)​
95 kN (21,384 lbf)​
 
Last edited by a moderator:
ATAR and M53 are very close in weight to the AL-31F and F100. Of course they have a fair bit larger diameter and mass flow.
 
The AVON was proposed for and tested in the Mirage III and still in production for civilian platforms until 1974, could this have been a suitable engine for the Mirage F1? Its later versions seem to offer significant performance advantages over the ATAR including the 09K50.

Comparison between the two most powerful, production versions of the ATAR and Avon as well as the M53 since it was also on offer:

ATAR 9K50
Avon Mk.302
M53-P2
Diameter
0.786m (30.9")​
0.907m (35.7")​
0.796m (31.33")​
Length
6.589m (259.4")​
3.2m (126")​
5.07m (199.6")​
Weight
1582kg (3488 lb)​
1,310 kg (2,890 lb)​
1,515 kg (3,340 lb)​
Thrust (Dry)
49.2 kN (11,055 lbf)​
56.5 kN (12,690 lbf)​
64 kN (14,300 lbf)​
Thrust (Wet)
70.6 kN (15,873 lb)​
72.8 kN (16, 360 lb)​
95 kN (21,384 lbf)​

How can the Avon be so... short ? :eek::eek::eek:

At merely half the length of the Atar, it must have make the Mirage III-O cG quite an interesting problem...
 
The AVON was proposed for and tested in the Mirage III and still in production for civilian platforms until 1974, could this have been a suitable engine for the Mirage F1? Its later versions seem to offer significant performance advantages over the ATAR including the 09K50.

I don't think it was considered for the F1 for a simple reason: RB.168 Spey, also from RR, the generation after, and a turbofan. The F1 flew in late 1966 but the loss of the first prototype pushed the following ones to 1969 and IOC to 1973. The Avon for its qualities would be a bit late in the game...
SNECMA wanted a turbofan - TF30, M53, or Spey.
 
Although the Spey seems to a popular choice for speculative applications, it’s first supersonic application (one of only two) didn’t go well.

When the Spey powered F4 flew, McDonald chief test pilot, Bud Murray said “with an engine that bad, who needs an enemy”. It suffered from a long list of unexpected issues associated with supersonic flight, flame out when going into reheat, engines becoming unresponsive only recovering after a shut down/restart, poor throttle response at supersonic above 25kft to name but a few. A lot of these problems were not solved at entry in service. Although several improvement/mod programs were undertaken, some of these problems remained as restriction throughout the F4K service life.

Ref Fly No More by Brian Davies(RN) F4K project test pilot
 
Last edited:
A Mirage wank from the land of Kangaroos ? You, sir, have my respect and my attention.
You rescued the G8 and got a CVL out of PH75 ! What's not to like ?

I confirm, the Aéronavale staff would have fed their grandmothers to sharks to get F1M53. It would (perhaps) need a larger wing.
 
Sadly one of the Mirage F-1 recently acquired by Draken crashed in vegas (pilot killed):

View: https://twitter.com/NTSB_Newsroom/status/1396990514004697090?s=20


 
Last edited:
Merde alors ! Agressors by definition have to fly agressive, with the according risk. Note that the F1 while pretty sane compared to say, F-104G has its quirks - at landing (from memory of my old Air Fan readings).
 
Merde alors ! Agressors by definition have to fly agressive, with the according risk. Note that the F1 while pretty sane compared to say, F-104G has its quirks - at landing (from memory of my old Air Fan readings).

Seems like this wasn't during aggressor air combat maneuvering (ACM) -- it crashed almost immediately after takeoff and went into the back yard of a residence just outside the perimeter at Nellis AFB.

Between this and the loss of an ATAC Mirage F.1 at Tyndall earlier this year, there are probably going to be some questions about the condition of these surplus F.1s. Neither were lost during ACM; the ATAC aircraft seems to have had a landing gear problem on takeoff and had to make a gear-up landing.
 
Merde alors ! Agressors by definition have to fly agressive, with the according risk. Note that the F1 while pretty sane compared to say, F-104G has its quirks - at landing (from memory of my old Air Fan readings).

Seems like this wasn't during aggressor air combat maneuvering (ACM) -- it crashed almost immediately after takeoff and went into the back yard of a residence just outside the perimeter at Nellis AFB.

Between this and the loss of an ATAC Mirage F.1 at Tyndall earlier this year, there are probably going to be some questions about the condition of these surplus F.1s. Neither were lost during ACM; the ATAC aircraft seems to have had a landing gear problem on takeoff and had to make a gear-up landing.
The press will raise that question of F1 viability ("are they safe"). More market share that way.
 
I believe these posts are better suited in the Aviation and Space section as they are not about any of the work done by Atlas on the F1's.
 
Arguably my favorite French jet fighter. It strikes me as the quintessential jet fighter: pointy nose, small cockpit, proportioned intakes, solid wings, solid tail and elevators, one big nozzle at the back.
And one of the most sexiest landing gear design IMO ;)

Regards
Pioneer
 
and some more background on the same subject:

I find it ironic that everyone bought this myth that the F-16 was a superior fighter.

In reality for the first ~18 years (until the MLU upgrade) the F-16A was a rather limited dogfighter, that would regularly lose in exercises against French Mirage F1s (not to mention Mirage 2000s) due to the lack of BVR missiles and defensive ECM…

5. EITHER THE FY-16 OR FY-17 IS GREATLY SUPERIOR TO THE MIRAGE F-1/M53 AS AN AIR COMBAT FIGHTER. THE DIFFERENCES IN ABILITY TO CLIMB, ACCELERATE, AND MANEUVER ARE STUNNING; AND ONLY THE AMERICAN FIGHTERS WILL MEET SHAPE MILITARY REQUIREMENTS. THESE ARE OUR STRONGEST POINTS AND WE SHOULD TRY TO DEVISE WAYS TO GET THIS ACROSS TO A SELECTED BELGIAN AUDIENCE
 
Last edited:
This has to be nuanced.

- Can't remember which F-16 Block got Sparrow capability, then AMRAAM, and when (block 30 in 1983 ?)

Against it...
-Mirage F1C had R-530 from 1973 but it wasn't particularly reliable nor efficient.
-Mirage F1C-200 got Super 530F circa 1981 (trials on a CEV SO-4050 Vautour started in 1976)
-Mirage 2000 got interim RDM in 1984 with Magic only, equal to early F-16s with Sidewinder only.
-Mirage 2000 RDI got pulse doppler and Super 530D later in the 1980's.
-Engine-wise the F-16 was always superior to either Atar or M53
-Agility wise: F1C lacked FBW and was no particularly agile.
-Mirage 2000 was in par with F-16 for analog FBW, the delta wing had its pros and cons.

Now it is possible the AdA F1C-200 and 2000 RDI kicked arse of the 348 European F-16s before they got the MLU update in the early 1990's... as indeed, those F-16s were early blocks with Sidewinders only - they jumped to AMRAAM straight away with the MLU.

The early 37 Mirage 2000s got their own MLU at the same time(1997) when they threw away their RDM for RDY and MICA. Thanks Taiwan money for that, in passing.

If often amaze me that the Italian managed to cram a Sparrow / Aspide medium range SARH into the F-104 airframe.
This mean that the last F-104s rolling out of FIAT production line between 1973 and 1979 could shoot F-16s at medium range.
 
Last edited:
-Mirage F1C-200 got Super 530F circa 1981 (trials on a CEV SO-4050 Vautour started in 1976)
-Mirage 2000 got interim RDM in 1984 with Magic only, equal to early F-16s with Sidewinder only.
-Mirage 2000 RDI got pulse doppler and Super 530D later in the 1980's.
The dates I have are:
1979 Super 530F on Mirage F1C,
1984-85 Super 530F on Mirage 2000C RDM
1986-88 Super 530D on Mirage 2000C RDI

The F-16s didn’t gain BVR capability until 1989 (F-16 ADF + Sparrow), and then 1991 for the F-16C+AMRAAM combo and 1998 for the F-16A MLU… so a 10-20 year gap in gaining effective BVR capability.
 
Thank you for the details. Didn't realized Mirage 2000 RDM had Super 530 capability.
 
  • Mirage 2000C (RDM) : version intérimaire équipée du radar RDM (le radar RDI prévu n'était pas encore disponible) et du moteur M53-5 ;
    • Mirage 2000C S1, nos 1 à 15 : équipés de radar RDM et armés de 2 missiles air-air Matra R550 Magic puis Magic II (à partir de 1985) en externe voilure (Magic II jusqu'à l'apparition du MICA pour les 2000-5 et plus tard sur les 2000D modifiés) et de 2 canons DEFA de 30 mm
    • Mirage 2000C S2, nos 16 à 19 : équipés de radars RDM à capacité « look down » (détection vers le bas) améliorée
    • Mirage 2000C S3, nos 20 à 37 : capables de tirer également des missiles air-air Super 530F
They were a mixed bag, it seems. Some had Super 530F, some had not.
 
The early 37 Mirage 2000s got their own MLU at the same time(1997) when they threw away their RDM for RDY and MICA

Just to clarify, it’s often misreported that the first 37 Mirage 2000Cs/RDM were upgraded to RDY+Mica. That is incorrect.

It was the oldest 37 Mirage 2000C RDIs that received the RDY midlife upgrade in the late 90s. These were serial numbers no 38 to 78 (minus no. 50, 60, 64, 75), which became M2000-5Fs. At the same time, this released RDI radars which were installed on the surviving RDMs no.1-37 (of which 26 remained).

Last little detail, the first 19 RDMs were retrofitted to full S3 standard in the late-80s so all RDMs were capable of firing Super 530F.
 
Last edited:
Interesting early Belgian (by way of the US) view on the Mirage F1 M53:
Once again, thank you for your research Opportunistic Minnow!

As much as I appreciate the French being focused on the Mirage 2000, as it's next generation dream machine, one would have thought the incorporation of the Mirage F1 M53 (alas in small numbers) into the Armée de l'Air
wouldn't have been too costly, in fact it would have given the Armée de l'Air a cost effective gain in capability till the introduction of the Mirage 2000 [1984], whilst also further benefiting export potential for Dassault and SNECMA - especially when the French knew and appreciated that this was the stumbling block of the Mirage F1 M53 being selected by the likes of Belgium. For I think it would be safe to say that had the Mirage F1 M53 gone into serious production, the orders for it wouldn't have simply stopped at Belgium, Denmark, the Netherlands and Norway...


Regards
Pioneer
 
Last edited:
Interesting early Belgian (by way of the US) view on the Mirage F1 M53:
Once again, thank you for your research Opportunistic Minnow!

As much as I appreciate the French being focused on the Mirage 2000, as it's next generation dream machine, one would have thought the incorporation of the Mirage F1 M53 (alas in small numbers) into the Armée de l'Air
wouldn't have been to costly, in fact it would have given the Armée de l'Air a cost effective gain in capability till the introduction of the Mirage 2000 [1984], whilst also further benefiting export potential for Dassault and SNECMA - especially when the French knew and appreciated that this was the stumbling block of the Mirage F1 M53 being selected by the likes of Belgium. For I think it would be safe to say that had the Mirage F1 M53 gone into serious production, the orders for it wouldn't have simply stopped at Belgium, Denmark, the Netherlands and Norway...


Regards
Pioneer

What you say indeed makes a lot of sense, alas the Armée de l'Air thought otherwise.
The F1-M53 (for them) only made limited sense as a "side kick" or "low end" to the ACF.
In fact to help its exports order and the Deal of the Century, the AdA reluctantly accepted to change its massive order of F1-Atar (160 aircraft, IOC April 1973 in Reims) into F1-M53 (80 to 100).
But they actually hated the idea as they were obsessed with the ACF at the time, which was damn expensive and thus needed all the money. The Jaguar also had its IOC in spring 1973 and was also sucking a lot of money like a black hole.

The two key events happened in 1975 some months appart and saw the end of the duo
- June 7, 1975: F1-M53 lose the Deal of the Century
- December 18, 1975: ACF is way too expensive and canned
And they are replaced by a brand new duo
- Mirage 2000
- Mirage 4000
Dassault goes to the Elysée palace to meet PRésident Giscard, with one idea in mind
- Mirage 4000 for France
- Mirage 2000 as a new export fighter, Mirage III style.

But, a brilliant economist (for all his flaws elsewhere) Giscard had analyzed the F1-M53 / ACF failure, and can see the 2000 / 4000 as proposed by Dassault will repeat that mistake.

Even before the 1973 oil shock the ACF (started in June 1972 from the VG G8s) was already too expensive for the Armée de l'Air.

The oil shock only made things worse, and the 4000 is no different from the ACF.
So Giscard picks the "low end side kick" that is: a single engine fighter.

Now, he picked the 2000 but he could have chosen the F1-M53. The reason ? the F-16.
The F1-M53 lacks FBW and the F1 is "old stuff": vintage 1966. The 2000 will resist the F-16 better.

And thus: the Mirage 2000 is the great winner of all this. The 4000 will never found a "sugar daddy" to fund it: Iraq or Saudi Arabia will never do it (because war and because F-15)

As for F1-M53 after 1975: no reason, they would be inferior to the 2000 while threatening it. That's the basic reasoning why it wasn't proposed anymore, even to Iraq in the 1980's.

It was seen as an evolutionary dead end compared to the 2000. Note that Dassault nearly sold a Mirage 2000D variant to Iraq in the late 80's, but they went for MiG-29s instead.
 
Last edited:
Interesting early Belgian (by way of the US) view on the Mirage F1 M53:
Once again, thank you for your research Opportunistic Minnow!

As much as I appreciate the French being focused on the Mirage 2000, as it's next generation dream machine, one would have thought the incorporation of the Mirage F1 M53 (alas in small numbers) into the Armée de l'Air
wouldn't have been to costly, in fact it would have given the Armée de l'Air a cost effective gain in capability till the introduction of the Mirage 2000 [1984], whilst also further benefiting export potential for Dassault and SNECMA - especially when the French knew and appreciated that this was the stumbling block of the Mirage F1 M53 being selected by the likes of Belgium. For I think it would be safe to say that had the Mirage F1 M53 gone into serious production, the orders for it wouldn't have simply stopped at Belgium, Denmark, the Netherlands and Norway...


Regards
Pioneer

What you say indeed makes a lot of sense, alas the Armée de l'Air thought otherwise.
The F1-M53 (for them) only made limited sense as a "side kick" or "low end" to the ACF.
In fact to help its exports order and the Deal of the Century, the AdA reluctantly accepted to change its massive order of F1-Atar (160 aircraft, IOC April 1973 in Reims) into F1-M53 (80 to 100).
But they actually hated the idea as they were obsessed with the ACF at the time, which was damn expensive and thus needed all the money. The Jaguar also had its IOC in spring 1973 and was also sucking a lot of money like a black hole.

The two key events happened in 1975 some months appart and saw the end of the duo
- June 7, 1975: F1-M53 lose the Deal of the Century
- December 18, 1975: ACF is way too expensive and canned
And they are replaced by a brand new duo
- Mirage 2000
- Mirage 4000
Dassault goes to the Elysée palace to meet PRésident Giscard, with one idea in mind
- Mirage 4000 for France
- Mirage 2000 as a new export fighter, Mirage III style.

But, a brilliant economist (for all his flaws elsewhere) Giscard had analyzed the F1-M53 / ACF failure, and can see the 2000 / 4000 as proposed by Dassault will repeat that mistake.

Even before the 1973 oil shock the ACF (started in June 1972 from the VG G8s) was already too expensive for the Armée de l'Air.

The oil shock only made things worse, and the 4000 is no different from the ACF.
So Giscard picks the "low end side kick" that is: a single fighter.

Now, he picked the 2000 but he could have chosen the F1-M53. The reason ? the F-16.
The F1-M53 lacks FBW and the F1 is "old stuff": vintage 1966. The 2000 will resist the F-16 better.

And thus: the Mirage 2000 is the great winner of all this. The 4000 will never found a "sugar daddy" to fund it: Iraq or Saudi Arabia will never do it (because war and because F-15)

As for F1-M53 after 1975: no reason, they would be inferior to the 2000 while threatening it. That's the basic reasoning why it wasn't proposed anymore, even to Iraq in the 1980's.

It was seen as an evolutionary dead end compared to the 2000. Note that Dassault nearly sold a Mirage 2000D variant to Iraq in the late 80's, but they went for MiG-29s instead.
Thank you for your analogy Archibald. I appreciate it's not the first time a good and solid design was curtailed because of new shiny bling was coming down the line. Although history clearly shows that the F1 soldiered on many years past that of the Mirage 2000's IOC - including in that of the Armée de l'Air.

Regards
Pioneer
 
Back in June 1997 Science& Vie had a special "aviation edition" for Le Bourget air show, as they do since the 1950's at least.
That peculiar magazine.

See the title on the cover "Le Rafale. Un bel avion, MAIS..." "Rafale. An outstanding aircraft, BUT..."
That "but" was a very critical analysis of the Rafale pre-history since 1975 (22 years at the time).
The author noted that the Mirage 2000 choice while logical in the short term and 1975 context, was actually a double anomaly
- it duplicated a bit the F1 (and aborted F1-M53) before it
- it frustrated the Armée de l'Air of its heavy fighter for the sixth time in a row (Mirage IVC, AFVG, G4, G8, ACF, 4000)
- and that wound would not heal and lead straight to the Rafale pre-history, starting in 1977 with the ECA / ECF studies, and then second round in 1981, only for the "Typhoon split" to happen in 1985.

After what Cold War ended and France had terrible difficulties paying for the Rafale bill.
- As of 1997 its IOC was still 4 years in the future for the Aéronavale, and 6 years for the Armée de l'Air.
- Remember, that was 1997, the heydays of "the end of history" and "peace dividends". 9-11 and its train wreck were still 4 years in the future.
- And Crusaders were still agonizing, until 1999.
- And Rafale would not get an export order until 2014: 17 years later (if Science&Vie authors had knew, they would had kittens !)
 
The story to me is put on the wrong way:it's Dassault-Aviation (AMDBA as it was known then) that influenced the French gov choice toward the nimble M2K. That one, a cheaper airframe obviously, would secure more order from the AdlA and export.
If my memory stands right, there is a narrative account of those conversations that you are mentioning b/w Marcel Dassault and the French president, Mr Giscard, in the Fana.
 
Last edited:
Don't ask me why Science& vie had the story the other way around. Or maybe Dassault played both games.

He KNEW the Armée de l'air badly wanted the ACF and thus would love the 4000. They were completely obsessed with heavy fighters, probably because of Mirage IV succession plus Tornado and F-15.

But he also KNEW former finance minister Giscard would go for the 2000, which certainly had better export prospects - as a "Mirage III 2.0".

And he certainly did not spat on the Mirage 2000 order by the AdA, all 315 of them. Plus the export orders.

It was a win-wing game for Dassault whatever happened. Even if the ACF and 4000 "scars" led to the Rafale / Typhoon split a decade later.

The real missed opportunity was the "Mirage 3000" in 1977: a 0.80 Mirage 4000 just small and light enough for a pair of RB199s.
Put otherwise: it is a pity Typhoon and Rafale had to re-invent the Mirage 4000, twice...
 
See the title on the cover "Le Rafale. Un bel avion, MAIS..." "Rafale. An outstanding aircraft, BUT..."
That "but" was a very critical analysis of the Rafale pre-history since 1975 (22 years at the time).
The author noted that the Mirage 2000 choice while logical in the short term and 1975 context, was actually a double anomaly
- it duplicated a bit the F1 (and aborted F1-M53) before it
- it frustrated the Armée de l'Air of its heavy fighter for the sixth time in a row (Mirage IVC, AFVG, G4, G8, ACF, 4000)
- and that wound would not heal and lead straight to the Rafale pre-history, starting in 1977 with the ECA / ECF studies, and then second round in 1981, only for the "Typhoon split" to happen in 1985.
From (distant) memory, the decision about Mirage 4000 was not so much made in Paris, but in Riyadh.
The only way the 4000 was going to be financed was through Saudi support. When there was a hiccup in the price of oil and they had to cut some of the more expensive projects, that was that.

I distinctly remember press comments at the time to the effect that "the point of a heavy fighter like M4k is to establish air superiority over Hanoi when flying from Saigon, and this is not a realistic endeavor for AdA in Europe." So basically, when the Saudi financing withered, so did the M4k.

Now, both narratives could be true at the same time: Once Saudi support ceased, Dassault sure tried to beg VGE, who declined. What they really said and why, we'll never know. And how journos and authors decide to describe it after the fact, hmm, caveat emptor...
 
This is convergent with a 1979 "downturn" for both Iraq and Saudi Arabia capability of funding the 4000.

I distinctly remember press comments at the time to the effect that "the point of a heavy fighter like M4k is to establish air superiority over Hanoi when flying from Saigon, and this is not a realistic endeavor for AdA in Europe." So basically, when the Saudi financing withered, so did the M4k.

I remember reading similar comments, related to RFA / FGR / West Germany: the Armée de l'Air had no need for something as large and expensive as the 4000 to fight there. Mirage F1s and 2000s were good enough to fight that air battle.
Better to have more LWF / single engine airframes. In that regard, France alone got 315 Mirage 2000s when the combined strength of the Deal of the Century F-16 was 348, so probably a good bargain.
 
Line drawings of the Mirage F1 with M53 and usual 9K50.
Aeronautical Engineering

Mirage F1 / M53 Shown Near Completion

First prototype of the Mirage F1/M53 fighter is shown resting on jacks but nearly fully assembled with the exception of several access panels and wing-fuselage fairings. Early M53 engine was used to test fit the engine in the aircraft at Dassault-Breguet’s St. Cloud plant. but actual flight test engine will be installed at the Istres, France, flight test center where aircraft has been shipped.

Fuselage from a standard F1 fighter is at upper right. and next to that. the fourth prototype of the Dassault—Breguet/Dornier Alphajet trainer nears completion for a first flight this month. Airframe changes to the Mirage F1 fighter to accommodate the Snecma M53 engine (illustration below) are generally limited to a somewhat longer nose for center-of-gravity purposes and slightly larger air intakes to provide the increased airflow required by the M53. Same basic wing is used for both aircraft. Side-view drawing of the F1/M53 (solid outline) is superimposed over side-view of the F1 /9K50 (dotted outline) to illustrate these differences. Nose-cone of the F1/M53 is wider than that of the F1 to accommodate an updated Thomson-CSF Cyrano 4 Search and tracking radar.
 

Attachments

  • F1-M53b.jpg
    F1-M53b.jpg
    102.7 KB · Views: 179
Damien Manley did up some great line drawings of the Mirage F1 M53 version for me years ago if anyone is interested. It was to assist a fictional story I wrote whereby the Mirage F1 M53 entered service. I can share if anyone is interested - I won't post in this thread though since they are unofficial.
 

Similar threads

Please donate to support the forum.

Back
Top Bottom