F-14A 1975 vs 1989 - Page 2 - ED Forums
 


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Old 07-31-2020, 05:50 PM   #11
KlarSnow
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A2A only AFAIK, and so worthless they removed it/faired it over/replaced it with TCS as fast as they could.

Just took up weight and space
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Old 07-31-2020, 06:09 PM   #12
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Quote:
Originally Posted by KlarSnow View Post
A2A only AFAIK, and so worthless they removed it/faired it over/replaced it with TCS as fast as they could.

Just took up weight and space
That's correct. A lot of folks assume that the early IRST was the same system that was on the F-14D chinpod and it's not. The IRST from the F-14D was actually a useful system, whereas the F-14A IRST was pretty poor.
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Old 07-31-2020, 06:31 PM   #13
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ALR-23 IR Seeker for early F-14A
AN/AAS-42 for F-14D
http://www.deagel.com/Sensor-Systems...002575001.aspx
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Old 08-01-2020, 06:12 PM   #14
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It was an IRD- Ifrared detector- not an IRST- meaning it was meant to give a direction toward a bandit- not enough for a shot
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Old 08-01-2020, 06:22 PM   #15
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It was an IRD- Ifrared detector- not an IRST- meaning it was meant to give a direction toward a bandit- not enough for a shot
Ah ok. I thought it was going to help guide the AIM-9s or something.
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Old 08-01-2020, 07:43 PM   #16
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Also, if memory servers (it's been ages since i read this the last time), engines were detuned, air-bleed reconfigured and engines reinforced to reduce damage to the plane in case of.... ahem.... "spontaneous self-combustion".....

So probably a bit more thrust on the early birds (like pre 1978 ), and greater chances for compressor stalls.
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Old 08-01-2020, 08:02 PM   #17
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I have a question, Did -A Cats always need Zone 5 A/B when taking off from carriers? I was watching a F-14 Documentary recently which had footage from VF-1 and Vf-2s first cruise and some of the -A Tomcats in that footage didn't appear to be using afterburner as there were no bright exhausts. What could be the reason for this ?
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Old 08-01-2020, 08:36 PM   #18
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Quote:
Originally Posted by captain_dalan View Post
Also, if memory servers (it's been ages since i read this the last time), engines were detuned, air-bleed reconfigured and engines reinforced to reduce damage to the plane in case of.... ahem.... "spontaneous self-combustion".....

So probably a bit more thrust on the early birds (like pre 1978 ), and greater chances for compressor stalls.

I've heard this and I can find no source other than people saying "I heard they were de-tuned." Here's the thing: the Preliminary Technical Order from June 1972 indicates an installed thrust of the TF-30P-412 (0 altitude, 0 airspeed) as 10,500lbs at military power and 17,000 pounds in max afterburner. Later NATOPS manuals refined the numbers for the -414/414A; the 1981, 1984, 1995 and 2004 manuals all show 10,875lbs military and 17,077lbs in max afterburner installed thrust (again at 0 altitude and 0 airspeed). That tells me the engine wasn't de-tuned. The aircraft did get heavier, though, so the thrust-to-weight ratio got worse on account of the jet itself, not the motors.

Last edited by Quid; 08-01-2020 at 08:40 PM. Reason: Grammar
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Old 08-01-2020, 08:39 PM   #19
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Quote:
Originally Posted by WolfHound009 View Post
I have a question, Did -A Cats always need Zone 5 A/B when taking off from carriers? I was watching a F-14 Documentary recently which had footage from VF-1 and Vf-2s first cruise and some of the -A Tomcats in that footage didn't appear to be using afterburner as there were no bright exhausts. What could be the reason for this ?
I too have seen some references to Mil power catshots for As, and I'm wondering if the increasing weight of the A models maybe had to do with it? It may also have to do with the weight at launch and the loadout of the jet.
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Old 08-01-2020, 10:28 PM   #20
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Quote:
Originally Posted by captain_dalan View Post
Also, if memory servers (it's been ages since i read this the last time), engines were detuned, air-bleed reconfigured and engines reinforced to reduce damage to the plane in case of.... ahem.... "spontaneous self-combustion".....

So probably a bit more thrust on the early birds (like pre 1978 ), and greater chances for compressor stalls.
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