Dutch Posted January 6, 2023 Share Posted January 6, 2023 (edited) I saw these Aeroclub #P094 1/72 HS squared-tipped props and was wondering to which model L-049 /749 /1049 /1649 Connie these applied? Also, were these airline specific? And, what is their diameter? (For possibility of other applications.) [Note: These props were advertised and/or labeled as Hamilton Standard 3 blade square tipped Super Connie props when they are in fact Curtiss Electric propellers. I am still trying to determine the propeller hub & blade model numbers.] According to the Wiki entry for the L-1049 Super Constellation the standard propellers were: 3-bladed Hamilton Standard Hydromatic 43H60, 16 ft 10 in (5.13 m) diameter constant-speed fully-feathering Duralumin propellers. I've only ever seen rounded-tipped props on a Connie, never square-tipped so I am curious about these. K/r, Dutch Edited January 7, 2023 by Dutch Editor's note. Quote Link to post Share on other sites
southwestforests Posted January 6, 2023 Share Posted January 6, 2023 Aw man, I'm at the laundromat and at home there are 2 quite nice hardcover books about Lockheed Constellation which would be candidates for answering that questions. In the meantime, it might be of at least some use to go browse Connie pics at Airliners dot net. Which has images such as, https://www.airliners.net/photo/Trans-Canada-Air-Lines-TCA/Lockheed-L-1049G-Super-Constellation/7052427 Quote Link to post Share on other sites
Dutch Posted January 6, 2023 Author Share Posted January 6, 2023 (edited) On 1/6/2023 at 2:41 PM, southwestforests said: Aw man, I'm at the laundromat and at home there are 2 quite nice hardcover books about Lockheed Constellation which would be candidates for answering that questions. In the meantime, it might be of at least some use to go browse Connie pics at Airliners dot net. Which has images such as, https://www.airliners.net/photo/Trans-Canada-Air-Lines-TCA/Lockheed-L-1049G-Super-Constellation/7052427 Thanks for that. Yes, even more evident in this photo. Lockheed L-1049G Super Constellation - Trans-Canada Air Lines - TCA | Aviation Photo #4154193 | Airliners.net. But was TCA the only square-tipped operator? Why? From this propeller history site, I have a chart (scroll to bottom) explaining the hub & blade designation system. Still doesn't give me the correct designation and match up for this particular prop. [Note: It is dated and only lists the C-69.] From a pprune.org forum, I have this propeller to aircraft match-up. No telling which one is the one I am searching for. Quote Brian Abraham 13th Feb 2009, 01:19 Taken from the respective type certificates. Well you did ask. Britannia 305 De Havilland P.D. 202/4N6/2 De Havilland P.D. 208/466/2 DC-6 Hamilton Standard 43D60/6825 (Not permitted on -83A or -83AM3 engines) 43D60/6841 43D60/6851 43D60/6873 43E60/6895 (Only prop permitted on CB16 engine. Only prop permitted on DC-6A and –6B) Curtiss Electric C632S-B/744-6C2 C632S-B/744-4C2-0 C632S-B/744-10C2 C632S-B/836-14C2 C642S-B/836-14C2-18 DC-7 Hamilton Standard 34E60/6921 34E60/7019 (DC-7C only) Boeing 377 Hamilton Standard Hub 24260 fitted with either 2J17B3-8W, 2J17F3-8W or 2J17H3-8W blades 34E60/7015-29 (Supplemental Type Certificate for use on 377MG [Cargo only aircraft]) Curtiss Electric Hub C6445-B302, Blades 1052-2004-30 Constellation 1049 Hamilton Standard 43E60/6901-02 43E60/6903B-0 43H60/6959B-0 43H60/6967-0 Curtiss Electric Hub C634S-S, blades 858-5C4-0 [KLM, Seaboard & Western (also BOAC lease), Air India, PIA, QANTAS] Hub C634S-C500, blades 830-21C4-0 [TCA] Hub C634D-A2, Blades 109652-12 Hub C634D-A4, Blades 109652-12 Unqoute Lastly, were there any other applications for the square-tipped props? I am thinking Canadair CP-107 Argus, perhaps? Edited January 9, 2023 by Dutch added airlines Quote Link to post Share on other sites
Dutch Posted January 7, 2023 Author Share Posted January 7, 2023 (edited) Andy, As always I am in your debt. Here is an Airliners.net link to a KLM L-1049C. But I will have to correct the entry for the Aeroclub props to Curtiss Electric instead of Hamilton Standard. What is the official designation number for the prop hub & blades? Did any other aircraft use this same prop? V/r, Dutch Edited January 7, 2023 by Dutch Quote Link to post Share on other sites
southwestforests Posted January 7, 2023 Share Posted January 7, 2023 (edited) Hehe, CF-TGE is now the most popular Connie in this thread with its being 100% of the individual airframes mentioned by 2/3 of the individuals who have posted to date. 😁 Am skimming through the Constellation books while having 1am insomnia. Haven't seen round tip versus square tip blades mentioned. but have seen as Andy's reference offers that the props had built-in deicing. Books are: Legend of the Sky Lockheed Constellation From Excalibur to Starliner, by Dominique Breffort, 2006, Historie & Collections, with 176 pages. Queen of the Skies, by Claude G. Luisada, 2005, Ivy House Publishing, with 404 pages. Page 228 has some interesting content about the L-1649A along with other engine and propeller information, " The propeller diameter had been increased by 1 foot, 8 inches, and this allowed propeller tip speeds at cruise settings to be some 5 percent lower, again reducing vibration and noise. " Kelly Johnson working together with the Hamilton Standard Propeller Division of United Aircraft and the Curtiss Propeller Division of Curtiss-Wright had one more trick up his sleeve. together they developed an electro-hydraulic synchrophasing system that resulted in all four propellers turning in perfect unison. This alone resulted in a cabin noise reduction of some 25 percent! " Author on following page, 229, mentions personal experience near Chicago Midway airport watching Air France L-1649A depart daily and be quite quiet while passing overhead at 3,000 to 4,000 feet at 8 to 9 miles from the airport. Yes, as you may have already deduced, Constellation is among my favorite aircraft. 😁 Edited January 7, 2023 by southwestforests saw typos Quote Link to post Share on other sites
andyf117 Posted January 7, 2023 Share Posted January 7, 2023 I must admit great surprise that the Aeroclub props appear to have been wrongly designated - I had the pleasure of often meeting and talking with John Adams back in Aeroclub's heyday, and know he was meticulous in his research and attention to detail. I've looked at an old late 90's Hannants catalogue, and P094 is listed there as 'Hamilton Standard' - whilst further evidence to the contrary points to the square tips indeed being the Curtiss Electric type: Quote Link to post Share on other sites
Dutch Posted January 9, 2023 Author Share Posted January 9, 2023 Andy, Again, thank you! That explains it even more clearly! K/r, Dutch Quote Link to post Share on other sites
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