Martin Jackson Oral History Republic P-47

[wombatBritishBulldogs]

 

With the upcoming release I found this guys story interesting , Sorry if its been done 

[airplayn]

Ron was SO IRRITATING I finally had to just stop watching because he just wouldn't shut up so Jackson could talk! Why didn't he do the job of a good interviewer and stay in the background to let Jackson reminisce? I didn't need Ron's constant interruption just to interject his erroneous opinions and demonstrate his ignorance! ALL P-47 marks had four bladed props and they all used a turbocharger, NOT a supercharger! That's why the plane was so big and the fuselage SO DEEP! DO YOUR RESEARCH or, here's an idea, let the WW2 pilot get a few words in? Manifold pressure usually 59" with 70" tops for takeoff, prop pitch is set to RPM which is secondary to MP for actual engine POWER! Is the interviewer even a pilot? Leaning changes EGT (exhaust as temp) with slight RPM drop, you don't use CHT to lean the engine! Cyl head temp is too slow feedback to use for leaning mixture.

[Art-J]

On 1/20/2023 at 1:27 AM, airplayn said:

Ron was SO IRRITATING I finally had to just stop watching because he just wouldn't shut up so Jackson could talk! Why didn't he do the job of a good interviewer and stay in the background to let Jackson reminisce? I didn't need Ron's constant interruption just to interject his erroneous opinions and demonstrate his ignorance! ALL P-47 marks had four bladed props and they all used a turbocharger, NOT a supercharger! That's why the plane was so big and the fuselage SO DEEP! DO YOUR RESEARCH or, here's an idea, let the WW2 pilot get a few words in? Manifold pressure usually 59" with 70" tops for takeoff, prop pitch is set to RPM which is secondary to MP for actual engine POWER! Is the interviewer even a pilot? Leaning changes EGT (exhaust as temp) with slight RPM drop, you don't use CHT to lean the engine! Cyl head temp is too slow feedback to use for leaning mixture.

Haven't watched the whole video yet and after a part of it I agree the interviewer could've done his homework better before visiting Mr Jackson, but you're a bit of a pot calling a kettle black as well ;). After all, Thunderbolts were equipped with super- and turborchargers working together (though both gentlemen didn't seem to make a fuss about this distinction). Moreover, there were no EGT gauges on Thunderbolts back in the day so CHT, although not great from modern point of view, was indeed used for leaning then (as per wartime P&W manuals by the way). Also, standard takeoff power MAP as per pilot's notes was 52" without water injection because the engine plus turbo would not make more at sea level. Sure, injection bumped it up, but I'm not sure they would use it for takeoffs very often.

Edited January 22, 2023 by Art-J