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toan

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Viewing 15 posts - 571 through 585 (of 909 total)
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  • in reply to: Guess the NATO reporting name for PAK-FA ? #2426584
    toan
    Participant
    in reply to: fighter maneuverability comparison ? #2429483
    toan
    Participant

    GDR=East Germany!

    “The GDR had 120 MiG-21s of the first generation. From that 39 were lost by accidents and 20 pilots killed.”

    During 1963 to 1974, Luftwaffe had lost around 30% of F-104 of its own, and produced 110 widows.

    in reply to: Rafale News IX #2429490
    toan
    Participant

    Well, if Rafale does so well in a2a against Typhoon and also have superb a2g capabilities, why does it seem that the FAB does not prefer it over SH and Gripen NG?

    Are the SH and Gripen NG much more capable than some people claim? Or is the Typhoon really not as strong as some people claim?

    Or perhaps the ROE of the this training means that we cannot really draw any conclusions?

    1. We simply have no idea if FAB prefers Rafale over SH and Gripen NG (or not) until it makes the final choice next year.

    2. The story that Rafale humiliated Typhoon during the ATLC hasn’t been revealed publically until 2009/12/17 ~ FAB may simply don’t know this information until two days ago, or even later.

    3. Gripen also did very well in a2a against F-16 during the international exercises of past several years, but it still didn’t affect Poland and Chilean airforces’ final decision to choose F-16 over JAS-39 for their own F-X projects.

    4. We still have no idea in what situation that EF-2000 was defeated so miserably by Rafale during the exercise, so it is still hard to make a proper judgement for this Rafale’s achievement.
    * If Rafale defeated Eurofighter in the reign of long-range BVR at high speed (Mach 1.5+) and medium to high altitude (40,000 fts+), then shame on RAF and EF-2000, and Vive la FAF and Rafale.
    * If Rafale defeated Eurofighter in the reign of short-range BVR or WVR at low altitude and subsonic speed ~ Still an achievement, but not so surprising.

    5. The final decision of UAE AF for Rafale (To buy, or not to buy…..) should be the best index for Rafale’s performance during this exercise.

    in reply to: Rafale News IX #2403443
    toan
    Participant

    http://www.defense-aerospace.com/dae/sponsors/sponsor_rafale/img/fox3_14.pdf

    Page 3:

    * The ground static thrust of M88-2 today: 16,620 Ibs / 10,791 Ibs (A/B / dry), a little lower than the so-called 17,000 Ibs class.

    –> To the Rafale fanboy who thinks 89KNs or 90 KNs as a big difference for EJ-200, the same thing (16,620 Ibs? or 16,840 Ibs? or 17,000 Ibs?) has also happened to your beloved fighter’s engine:D

    Page 4:

    * M88-2 TCO:
    a. Upgrading the high-pressure compressor and the high-pressure turbine.
    b. Cooling is ameliorated and stronger components have been introduced, boosting durability by up to 50%.
    c. The first TCO pack for M88 engines will be delivered to the French Armed Forces in 2011.

    * M88-2 TCO –> Less than 20% new parts / Redesigned lowpressure compressor / Altering two of the 21 modules –> Uprated M88 of 20,000 Ib class.

    Page 9:

    * The Rafale has been designed as a very compact, high-tech fighter capable of carrying a huge external load of fuel tanks and missiles. In fact, it can carry more than 15,000 kg of kerosene and weapons, quite an accomplishmentor an aircraft weighing less than 10 tonnes empty.

    * With their 4,700 kg of internal fuel, single-seat Rafales boast an impressive range which can be massively extended by up to five external drop tanks (three 2,000-litre and two 1,250-litre fuel tanks) under five wet hardpoints.

    in reply to: Quadrennial Defense Review To Propose Cutting JSF Numbers #2406276
    toan
    Participant

    Like it or not, USAF and USN will have to face the fate of greatly reducing numbers of tactical fighters in the next 15 years, just like other NATO members.

    You use a fighter which is larger and heavier than F-15C to replace the roles of F-16, F/A-18, and AV-8B, and the program cost of this fighter escalate rocketedly in the past 8 years (From the original plan of 200 billion USDs for 3,000 fighters in 2001 to more than 300 billion USDs for 2,443 fighters now, which is equal to more than 84% increase for the unit cost in 8 years even before the fighter has formally entered the service). ~ Now it’s time to face the music and pay the price.

    in reply to: Hot Dog Typhoon thread III #2408356
    toan
    Participant

    Eurofighter:

    1. Climbing performance at sea level: 283 to 315 m / sec or 55,700 to 62,000 fts / min.

    2. From brake off to 12,200 m, A2A configuration (six to eight AAMs): 1 min to 1 min 10 secs (174 ~ 203 m / sec or 34,250 ~ 40,000 fts / min).

    3. From brake off to 12,200 m, standard QRA configuration (eight AAMs + two 1,000 L tanks): 1 min 30 secs to 1 min 40 secs (122 ~ 135.6 m / sec or 24,000 ~ 26,700 fts / min).

    F-16C Viper:

    1. Climbing performance at sea level: 254 to 315 m / sec or 50,000 to 62,000 fts / min according to the different sources.

    2. From brake off to 9,144 m, clean configuration: 1 min (152.4 m / sec or 30,000 fts / min).

    3. From brake off to 12,200m, clean configuration: 2 mins (101.7 m / sec or 20,020 fts / min).

    JAS-39 Gripen:

    1. Climbing performance at sea level: > 250 m / sec or > 50,000fts / min.

    2. From brake off to 10000m: 1 min 40 secs (100 m / sec or 19,685 fts / min).

    3. From brake off to 11000m: 2 mins (91.7 m / sec or 18,045 fts / min).

    4. From brake off to 14000m: 3 mins (77.8 m / sec or 15,310 fts / min).

    Climbing rate performance is an index for fighter’s SEP / energy. I think the data mentioned above should be a good explanation for:

    1. The reason why Eurofighter’s advantage for A2A should be much more significant in high altitude.

    2. The reason why F-16 still has certain chance to dogfight with the Eurofighter at low altitude according to the experience of ItAF.

    3. The reason why Gripen NG needs F414.

    in reply to: Hot Dog Typhoon thread III #2408357
    toan
    Participant

    EF Lightning:

    1. Initial climbing rate: 50,000 fts / min.

    2. Climbing to 28,900 fts in one minute (This record was achieved in Southern Africa).

    3. Acceleration:

    http://www.absoluteastronomy.com/topics/English_Electric_Lightning

    Carroll reports in a side-by-side comparison of the Lightning and the F-15C Eagle (which he also flew) that “acceleration in both was impressive, you have all seen the Lightning leap away once brakes are released, the Eagle was almost as good, and climb speed was rapidly achieved. Takeoff roll is between 2,000 and 3,000 ft [600 to 900 m], depending upon military or maximum afterburner-powered takeoff. The Lightning was quicker off the ground, reaching 50 ft [15 m] height in a horizontal distance of 1,630 feet [500m]”.

    in reply to: Saab JAS 39 Gripen Info # 2 #2409155
    toan
    Participant

    ok, sorry. maybe im wrong but i read it in the first source i came over.

    The source you mentioned could be wrong, or be misinterpreted.

    I think the most possible reason is that it misinterpreted “The climbing performance at sea-level: > 250 m/sec (which is equal to > 50,000 fts / min)” as if the fighter could really climb more than 50,000 fts in one minute. However, the truth is that as the height is increased, the jet fighter’s climbing performance will be decreased dramatically because of the decreasing oxygen density.

    JAS-39 Gripen:

    1. Climbing performance at sea level: > 250 m / sec or > 50,000fts / min.

    2. From brake off to 10000m: 1 min 40 secs (100 m / sec or 19,685 fts / min).

    3. From brake off to 11000m: 2 mins (91.7 m / sec or 18,045 fts / min).

    4. From brake off to 14000m: 3 mins (77.8 m / sec or 15,310 fts / min).

    Eurofighter:

    1. Climbing performance at sea level: 283 to 315 m / sec or 55,700 to 62,000 fts / min.

    2. From brake off to 12200m, clean configuration: 1 min to 1 min 10 secs (174 ~ 203 m / sec or 34,250 ~ 40,000 fts / min).

    3. From brake off to 12200m, standard A2A configuration: 1 min 30 secs to 1 min 40 secs (122 ~ 135.6 m / sec or 24,000 ~ 26,700 fts / min).

    in reply to: F-22 Raptor & F-35 JSF? #2409749
    toan
    Participant

    My question is pretty simple… Why decrease the number of orders on the F-22 so dramatically and increase the orders of the JSF dramatically?

    It’s true that the orders for F-22 have been reduced dramatically (The original requirement in the period of ATF project: 750 unit; and now: 187). However, it is far from the truth that the orders of JSF have ever been increased ~ The original plan in 2001 was about 3,000 JSF in total for USAF/USN/USMC with the total cost of around 200 billion USDs, but the number has been reduced to 2,443 fighter for the three forces, with the total cost of near 300 billion USDs right now.

    If LM can’t keep control the escalation of JSF project, then F-35 may be the next victim for Obama the White House…..

    in reply to: Saab JAS 39 Gripen Info # 2 #2410028
    toan
    Participant

    thats way of, in a minute a gripen A reach more than 15240 m (50000 ft), thats >254m/s.

    Don’t be ridiculous ~ if GRIPEN really could reach 50,000 fts in less than one minute, it would be an extremely amazing and completely new world record……

    http://www.propro.ru/flankers/eng/su-27.htm

    P-42 Record Flanker, a heavily modified Flanker with the near 2:1 T/W ratio for breaking the previous record:

    1. Time to climb to a height of 3000 m: 26s (Nikolai SADOVNIKOV 11/04/1987)

    2. Time to climb to a height of 6000 m: 37s (E. I. FROLOV 31/03/1988)

    3. Time to climb to a height of 9000 m: 47s (E. I. FROLOV 31/03/1988)

    4. Time to climb to a height of 12000 m: 58s (Nikolai SADOVNIKOV 11/03/1987)

    5. Time to climb to a height of 15000 m: 1min 16s (Nikolai SADOVNIKOV 11/03/1987)

    in reply to: F-22A Raptor has been killed !! #2410101
    toan
    Participant

    So, the most formidable opponent for F-22A in the foreseeable future is not Russian PAK-FA or Chinese J-XX, but White House’s Obama…….

    http://thecable.foreignpolicy.com/posts/2009/12/02/exclusive_white_house_aides_insisted_f_22_be_removed_from_obama_speech_venue#

    Exclusive: White House aides insisted F-22 be removed from Obama speech venue

    Another USA’s miracle……:D

    in reply to: F-22, Typhoon, Rafale, and F16's Block 60 #2411509
    toan
    Participant

    Toan,

    1) Correct
    2) Correct
    3) Not entirely correct – not Rafale and F-22. Not just M2K.

    1) and 2): Thank you very much.

    3) Do you mean something like F-15 (USAF), F-16 (PAF), and / or F-16E (UAE) ??

    in reply to: F-22, Typhoon, Rafale, and F16's Block 60 #2411559
    toan
    Participant

    Alright, let’s see if my understanding is right:

    During the UAE exercise up to now:

    1. Eurofighter and Rafale have never fought with each other.

    2. Rafale has done some WVR dogfights with Raptor, but Eurofighter hasn’t.

    3. Eurofighter has done a very good job for blue team during the exercise. However, the “Enemy fighters” it has slaughtered are something like Mirage 2000-5F and Mirage 2000-9 (fighters for red team), not Rafale or Raptor.

    4. Therefore, there is simply no any direct comparison of A2A capability between Raptor and Eurofighter, or Eurofighter and Rafale, during this exercise.

    Please correct me if my understanding mentioned above is not right……

    toan
    Participant

    so how much are typhoon upgrades (if any exist)

    Expensive enough that some RAF officers think they would rather buy the completely new Tranche 3B than upgrade the current Tranche 1………..

    in reply to: Hot Dog Typhoon thread III #2411717
    toan
    Participant

    What I like to tell people is in the distance (the runway today is relatively long) and in the distance from one end of the runway I can go from slow speed to supersonic…..

    Just another way for describing the performance of acceleration for Typhoon that have already been well known:

    1. From braking-off to supersonic: less than 30 secs.

    2. Low-level flight, from 200 kts to Mach 0.9: less than 20 secs.

    3. Acceleration at low level: 30kts per second in reheat.

    when I pull up at the end in the vertical departure I’m doing about 550 knots and if I was allowed to I could just continue up to 40,000ft and beyond……

    550 kts = 283 m/s –> I wonder if the sentence quoted above means the vertical climbing performance for Typhoon…..

Viewing 15 posts - 571 through 585 (of 909 total)