Recent content by packardpursuit

Aside from a few block numbers associated with particular featuures known (to me, anyway) , I'm not that into what blocks had what. I do know there is a note appearing on the Dorsal Fin Fillet (P-51B/C) assembly drawing stating the last 400 P-51C's were fitted with the DFF at the factory.

Just had this brought to my attention: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930092694_1993092694.pdf

I could have been clearer. This question wa soffered in a way similar to the propriety of term "razorback". Over the years most have equated "paddle blade" as interchangable or equal to, the "square tipped" blade. it is a pervasive notion among enthusiasts and operators of Mustangs, down to...

What is your take on the the "paddle blade" prop meaning the "square tipped" Hamilton Standard prop which became production standard on both Inglewood and Dallas built P-51D's?

drgndog, Youve given me a lot to think about and will try to assimilate. I'm eaning toward the the idea that what hppens inside is not a contributing factor to th eboundry layer question. IIRC, other accounts attribute the rumble to the ingestion of turbulent boundry layer into the intake...

Have re-visited chart page 79 and see two things I'd not noticed befor. "original" designation for 1st configuration shown.Thanks for making me look again. IIRC by-pass within the duct itself is not a feature of production duct interiors or has it been offered as the solution to the...

drgndog, My problem is the context ofpopular Mustang history as oft repeated by Gruenhagen and others (including some by Horkey and Atwood), that the solution to the rumble was to introduce the by-pass feature. IIRC both Atweood and Horkey attribute the enlargement of the gap or by-pass and...

Gruenhagen has a lot of gems but he has also intersting takes on items that simply are not verifiable, such as mentioning booster tab ailerons for those early Mustang I's (pages 48-49). IIRC production MkI's had like all the later evolved variants had a fixed tab on the port aileron and had an...

Well, there you go, drgndog. Who knows their Gruenhagen? You apparently! However it proves my point (instead of re-reading Gruenhagen, I arrived at similar conclusions as you found on pages 48-49 by looking at photos of early aircraft ), from a rather interesting egg vs chicken thrust, the...

Wouldn't you know it? This AM I noted a photo of an early Mk I that has than extended carb intake but it's not to rear of spinner. It stops short by some 4". What is evident is a slight crease at the front lower edges/sides indicating a possible beginning of a boundry layer by-pass...

Let's try a different tack. 1. When did by-pass configuration become a production feature on Mustangs? 2. When was fixed intake incorporated and did it have by-pass feature? 3.Was the boundry layer by-pass configuration the answer to the rumble issue of 1st XP-51B? (1) It would...

I'm wondering why it took NAA a year and a half (if the dates cited are true) to apply a benifit from a by -pass configuration at the nose , to a very simlar situation to the radiator intake??? Do the "rumble"accounts given by Gruenhage and others make sense? Do photos of the Xp-51B...

Shortround, Good to hear from another interested party!

Weather by anylitical or emperical means the solutions to both problems resulted in near identical configurations. It's the apparent year and a half difference that doesn't make sense to me. It's quite possible there is a plausible explaination, however, that's the apparent mystery. In...

I was thinking that too. It could go in any number of directions. One question that has bothered me is the implimentation of the boundry layer air gap, as developed for P-51B radiator air inlet. According to Gruenhagen and others, this was instituted when the XP-51B's were being tested and...