Started by Taaroa, June 04, 2017, 09:15:23 AM
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Quote from: Hog on July 17, 2017, 09:14:19 PMYes when you start to really think about ballasting, it does become problematic. You'd ideally want the weight in the seat to get it away from the crewmember. It would take a full redesign of all the components to make a heavy and a light version of the device, but then you are manufacturing/testing/certifying 2 units. Not gonna fly in the realworld.Some of those Russian/Soviet K-36 units look like they come close to what I am imagining. Someone told me that the minimum altitude required for an inverted K-36 ejection is 100ft. Care to comment?Thanks for the interesting discussion.peaceHog
Quote from: Uncle Duke on July 18, 2017, 01:24:37 PMIt's been at least fifteen years since I've looked at validated K36 terrain clearance curves/table, but I'm skeptical about an inverted 100 ft AGL ejection being within the seat's performance envelope. In any event, there are a number of variables other than altitude (aircraft airspeed, attitude, sink rate, method/timing of escape path clearance, system sequencing delays in a multi-place a/c, etc) that would have to be taken into account to predict terrain clearance. Keep in mind, however, the K36 design is optimized for high speed ejection, so lower end performance is compromised. To illustrate the point, consider the oft shown MiG 29 ejection at the Paris Air Show in 1989. The press went wild about the K36's performance, but in point of fact an ACES II seat under the exact same ejection parameters would have had the ejectee under a full chute and in steady state descent 75-100 ft higher than he got with K36. Bottom line, the K36 is no more vertical seeking/self righting than any other seat.We did a Foreign Competative Testing (FTC) program on the K36 in the mid 1990s, the final report can be found on the Defense Technical Information Center's website at www.dtic.mil.
QuoteSoldiers manning the fuel pumps at forward refueling points are at risk from enemy targeting and the U.S. Army is testing out a new technology so that it can remove them from harmâ€™s way.The U.S. Army Aviation and Missile Research, Development and Engineering Center is testing out a Limited Initial Capabilities Demonstration of the Autonomous & Robotic Remote Refueling Point (AR3P) that uses a robot to refuel a helicopter in the front line.Equipped with articulated arms and sensors, the robotic arm can top up fuel without any human input.The system was developed by the Centerâ€™s Aviation Development Directorate and Operational Energy Lab using commercial off-the-shelf materials for the majority of the package.Engineers hope to eventually refuel a AH-64 at Fort Eustis, Virginia during Phase 4.
Quote from: GravitySucks on July 28, 2017, 06:49:03 AMJust a passing mention that both pilots were women...http://www.telegraph.co.uk/travel/news/air-india-forgotten-landing-gear-low-fuel/
QuoteA New Zealand-made aircraft from Pacific Aerospace turned up at a North Korean military airshow painted up in the hermit state's colours in September last year.The plane was photographed at North Korea's first ever public airshow, which featured fighter jets and military helicopters. The Hamilton-made PAC P-750 XSTOL, which has a North Korean flag on its tail, is used for skydiving and could be used by paratroopers.Pacific Aerospace chief executive Damian Camp said at the time he was looking for answers."We're trying to get some detail on that because that aircraft is owned and operated by a Chinese company."He said his company had sold the 10-seater plane to the Chinese company, translated as Free Sky, several months ago.A UN Security Council report, however, showed a chain of emails that suggest the company knew its plane was in North Korea and it had been contacted by the Chinese company for parts and training.The Chinese counterpart emailed Pacific Airspace regarding parts and saying that North Korean operators should be "trained ASAP for this aircraft operating".Pacific Aerospace replied that they would co-ordinate training in China."[Name redacted] departs for China tomorrow and will co-ordinate with you to deliver the training in how to replace the flat motor," the email read.There are strict United Nations sanctions banning a wide range of exports and services to North Korea in response to its nuclear weapons programme.
Quote from: Rix Gins on August 01, 2017, 02:40:23 PMHere is an interesting account of high altitude Zeppelins that were being developed near the end of WWI. A couple of interesting items are contained in it, such as the Germans had supposedly planned a 'there and back' bombing run on New York but then the war ended. Also some bio information on a guy called "Harry the Man." I can't speak for the technical veracity of the writer, I leave that up to you experts. But it makes for a good read, especially if you have just poured yourself a steaming hot cup of coffee.http://sped2work.tripod.com/zeppelins.htmlPhotos of downed "Type U" Zeppelin L 49, basis for the Shenandoah.By Unknown - Gallica.fr, Public Domain, https://commons.wikimedia.org/w/index.php?curid=34172590
Quote from: Uncle Duke on August 01, 2017, 07:32:39 PMGermans may not have made it to the US with a Zeppelin, but they did fly one full of supplies to East Africa and back. Technically the mission was a failure since the supplies did not get delivered, but the airship flew over 4000 miles round trip. The hundredth anniversary of that mission is coming up in a couple months, would make a good entry in your "One Hundred Years Ago" thread.
Quote from: Taaroa on August 03, 2017, 02:01:38 AMWorldâ€™s last operational T-33s retired in BoliviaJul. 31 saw the worldâ€™s last operational T-33s jet trainers being retired by the Bolivian Air Force. Bolivian president Evo Morales was the guest of honor for the retirement ceremony at Grupo AÃ©reo de Caza 31. Between 1948 and 1959 a total of 6557 T-33 Shooting Stars were produced, 5691 by Lockheed, as well as 210 by Kawasaki and 656 by Canadair.
Quote from: Taaroa on August 01, 2017, 08:14:25 PMSaw the U-2 discussion in the UFO thread, and it reminded me of this:https://www.youtube.com/watch?v=L8HMPMYL19EThe idea behind the carrier ops was to eliminate the need for foreign government permission to use their bases for the U-2 and to increase the aircraft's operating range. Only used operationally once to spy on French nuclear testing in the Pacific.
Quote from: GravitySucks on August 03, 2017, 02:12:19 AMWhen I was stationed at Plattsburgh they had a program called the Co-pilot Enrichment Program. They first used T-38s to give KC-135 co-pilots more flight hours as a pilot. They switched them out for the T-33s because they did better in the cold weather and were cheaper to fly. They were cool little aircraft.
Quote from: Hog on August 03, 2017, 04:56:01 AMAnyone have any thoughts on the F-35 program.I'm wondering if the F-18 E/F might be a better candidate for our country. What about for other countries? I realize that engine tech has come a long way, but IMO having redundant propulsion is a big negative for some countries.
Quote from: Hog on August 03, 2017, 04:56:01 AMAnyone have any thoughts on the F-35 program.I'm wondering if the F-18 E/F might be a better candidate for our country. What about for other countries? I realize that engine tech has come a long way, but IMO having redundant propulsion is a big negative for some countries.peaceHog
Quote from: ZaZa on August 03, 2017, 10:48:57 AMjust buy Russian made jets. They are superior in every way to American junk.
Quote from: 21st Century Man on August 03, 2017, 11:46:43 AMOh really? Then why do Russian airlines buy Boeing jets like the two that are soon to be Air Force 1 and Air Force 2. They were originally made for a Russian airline but the company went bankrupt.
Quote from: albrecht on August 03, 2017, 11:50:50 AMCount me as being a bit suspect of buying a used plane, and a Russian one at that, for use by our government officials. But we outsource and/or buy a lot of our electronics, data-mining, and software to China, Amazon, Google, and Israel so, I guess, it is ok.