Cubdriver Posted October 27, 2019 Share Posted October 27, 2019 7 hours ago, janice6 said: Just an observation: I have to assume that the pilot was hit by ground fire when he was diving or climbing out from a ground attack mode. Just looking at the uniformity of the peeling back of the Prop skin, shows that the shell that hit it was going so fast relative to the rotation velocity of the propeller, it was as if the propeller was standing still. No indication of any angular velocity component in the damage to the prop. It appears symmetrical. Amazing! Thinking about this more, I'm going to posit that rather than a ground-fired 88 (that is nearly 3-1/2" in diameter and that would have had to hit from nearly directly behind to make that pattern), that the prop took a hit from something like a 20mm cannon round fired by a German fighter - far more likely to come from astern, and I'd think an 88 would have made a hole that was much larger and likely compromised the blade to the point that the end would have separated. Either way, it's very impressive that it stayed together, and didn't lose enough material to go horribly out of balance. I think I'd need to change my shorts if I landed and saw a duck pin bowling ball sized hole in my prop!! (And to think, today there are many who need a safe space because someone wrote "Trump for President" in chalk on the sidewalk at their college.) -Pat 4 1 Link to comment Share on other sites More sharing options...
gwalchmai Posted October 27, 2019 Share Posted October 27, 2019 14 hours ago, pipedreams said: 19-year-old Lieutenant Edwin Wright looks upon his airplane after being hit by an 88 mm shell, over the city of Munster, Germany. I wonder if he noticed any additional vibration in the Jug. 1 1 Link to comment Share on other sites More sharing options...
gwalchmai Posted October 27, 2019 Share Posted October 27, 2019 9 hours ago, janice6 said: Just an observation: I have to assume that the pilot was hit by ground fire when he was diving or climbing out from a ground attack mode. Just looking at the uniformity of the peeling back of the Prop skin, shows that the shell that hit it was going so fast relative to the rotation velocity of the propeller, it was as if the propeller was standing still. No indication of any angular velocity component in the damage to the prop. It appears symmetrical. Amazing! I wonder what the RPM range was for a Jug in those circumstances. 2 Link to comment Share on other sites More sharing options...
Cubdriver Posted October 27, 2019 Share Posted October 27, 2019 27 minutes ago, gwalchmai said: I wonder what the RPM range was for a Jug in those circumstances. One article I read performance testing of the plane listed max RPM at 2700, which sounds about right for the R2800 Double Wasp, and somewhere else I saw the reduction gear ratio as 2:1, so that would mean the prop would spin at a maximum of 1350 RPM. -Pat 1 2 Link to comment Share on other sites More sharing options...
pipedreams Posted October 27, 2019 Share Posted October 27, 2019 4 Link to comment Share on other sites More sharing options...
janice6 Posted October 27, 2019 Share Posted October 27, 2019 The spec for muzzle velocity of an antiaircraft 88 says it was about 2700 feet per second. The cross section of an 88mm would be roughly 3.5 inches. The comment about an 20mm is a valid consideration also. 20 mm is about 8 tenths of an inch. 2 Link to comment Share on other sites More sharing options...
railfancwb Posted October 27, 2019 Share Posted October 27, 2019 Watch that first step...Sent from my iPhone using Tapatalk 2 Link to comment Share on other sites More sharing options...
railfancwb Posted October 27, 2019 Share Posted October 27, 2019 Magazine is relatively new. The cover picture is probably 50 to 75 years old. Sent from my iPhone using Tapatalk 3 Link to comment Share on other sites More sharing options...
gwalchmai Posted October 28, 2019 Share Posted October 28, 2019 7 hours ago, janice6 said: The spec for muzzle velocity of an antiaircraft 88 says it was about 2700 feet per second. The cross section of an 88mm would be roughly 3.5 inches. The comment about an 20mm is a valid consideration also. 20 mm is about 8 tenths of an inch. Interesting that 20mm is about 20 gauge. 2 Link to comment Share on other sites More sharing options...
pipedreams Posted October 28, 2019 Share Posted October 28, 2019 1868 Blue Whale 2 1 Link to comment Share on other sites More sharing options...
pipedreams Posted October 28, 2019 Share Posted October 28, 2019 2 1 Link to comment Share on other sites More sharing options...
pipedreams Posted October 28, 2019 Share Posted October 28, 2019 2 1 Link to comment Share on other sites More sharing options...
pipedreams Posted October 28, 2019 Share Posted October 28, 2019 2 1 Link to comment Share on other sites More sharing options...
pipedreams Posted October 29, 2019 Share Posted October 29, 2019 3 1 Link to comment Share on other sites More sharing options...
janice6 Posted October 29, 2019 Share Posted October 29, 2019 33 minutes ago, pipedreams said: There is a rumor that in the "old days" a person could go into the woods and survive for a while on their own. Today it's just a rumor! 3 Link to comment Share on other sites More sharing options...
Administrators Eric Posted October 31, 2019 Author Administrators Share Posted October 31, 2019 4 1 Link to comment Share on other sites More sharing options...
Administrators Eric Posted October 31, 2019 Author Administrators Share Posted October 31, 2019 45 minutes ago, Eric said: Those tires are about 10rpm away from becoming elastomer grenades. 3 1 Link to comment Share on other sites More sharing options...
pipedreams Posted November 1, 2019 Share Posted November 1, 2019 Sydney Opera House under construction in 1966. 1 1 Link to comment Share on other sites More sharing options...
E-2-E Posted November 1, 2019 Share Posted November 1, 2019 A few of the photos discovered in my Grandfathers belonging when he passed in 1982. A pic of him in no mans land, a photo of him in France, German prisoners, and dead German solders. 2 2 Link to comment Share on other sites More sharing options...
railfancwb Posted November 1, 2019 Share Posted November 1, 2019 There is a rumor that in the "old days" a person could go into the woods and survive for a while on their own. Today it's just a rumor!Didn’t the unibomber do the wilderness life for a good number of years? Sent from my iPhone using Tapatalk 1 Link to comment Share on other sites More sharing options...
janice6 Posted November 1, 2019 Share Posted November 1, 2019 7 minutes ago, railfancwb said: Didn’t the unibomber do the wilderness life for a good number of years? Sent from my iPhone using Tapatalk Yeah. There are more than one reason for wanting isolation and solitude. Sometimes it's to evade the law. I doubt we'll see a member of Antifa hiding out in the wilderness unless mom packs his/her lunch. 1 1 Link to comment Share on other sites More sharing options...
Administrators Eric Posted November 1, 2019 Author Administrators Share Posted November 1, 2019 6 minutes ago, janice6 said: Yeah. There are more than one reason for wanting isolation and solitude. Sometimes it's to evade the law. I doubt we'll see a member of Antifa hiding out in the wilderness unless mom packs his/her lunch. They just need someone to invent a man-portable Starbucks. Of course, finding the men to move it might present a problem for them. 1 1 Link to comment Share on other sites More sharing options...
pipedreams Posted November 1, 2019 Share Posted November 1, 2019 (edited) Kodak K-24 camera, used for aerial photography during WW2 by the Americans. Edited November 1, 2019 by pipedreams 1 1 Link to comment Share on other sites More sharing options...
pipedreams Posted November 1, 2019 Share Posted November 1, 2019 Entertainer Martha Raye performing at a USO show for the US 12th Air Force stationed in the Sahara Desert during WWII, 1943. 1 1 Link to comment Share on other sites More sharing options...
pipedreams Posted November 1, 2019 Share Posted November 1, 2019 Colorized photograph of Mary Saverick stitching a parachute harness during the war in 1942. (Photograph taken by William M. Rittase) 2 1 Link to comment Share on other sites More sharing options...
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