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Everything posted by Ian

  1. For many people the answer is yes. Cost and effort is another manner. It provides the following advantages effective control of the fuel ratio in each cylinder, the reliability of solid state ignition, programmable ignition advance, The ability to use features like oxygen sensors to automatically optimize combustion, Strong spark for better starting, Not having to get magnetos services every 500 hours, significantly lighter in weight. Modern engines are more reliable and flexible than old engines because they use solid state technology wit
  2. Running mogas doesn't necessarily depart from the recommendations of the manufacturer. There are a number of older and newer engines from Lycoming which run fine on Mogas the link below provides a from the horse's mouth view. https://www.lycoming.com/sites/default/files/SI1070AB Specified Fuels.pdf Note that Mogas is included. From a technical point of view the majority of GA aircraft will run on Mogas without an issue. There are some higher compression and turbocharged aircraft which currently require Avgas however these aircraft are in the minority. Essentially the GA indust
  3. There are simple tests which detect ethanol in fuel. Food colouring can be used. Supplying fuel in Australia which doesn't meet standards is an offence. https://www.legislation.gov.au/Details/C2021C00266 Stating that mogas supplied in Australia doesn't meet standards is nonsense. It is just as likely as avgas not meeting standards. The same companies are involved using similar processes.
  4. Radiator cowling design is an extremely difficult subject and most of the work in this space was done in WW2. If you can find someone with a moderately good solutions it's probably the right one unless you have a lot of time to burn. What most people don't realize is that a really good radiator design can develop thrust (meredith effect), the P52 radiator design is probably is probably one of the best, however this really only works when your airspeed is pretty high. However at the very least good cooling duct design can be advantageous if you have the space available. The lower the
  5. Does anyone know if the protocol is extensible to include basic security? From what I've know, ASD-B is inherently vulnerable to spoofing and replay attacks, and where there's a vulnerability someone will eventually exploit it for fun or gain. I can imagine in a few years ADS-B-v2 with message integrity will appear after someone equips a drone with a spoofing device and generates thousands of ghosts around busy airports to get back at the Government. At that point we'll be told that we need to buy newer hardware to support the capability.
  6. Has anyone been playing with vortex generators recently? It would be nice if someone had the time and inclination to characterize the change in flight characteristics of a particular plane with and without.
  7. Hi All, Given that there's an election coming up. Is anyone willing to vote for whoever will pony up for a second airport at Williamsdale near Canberra? Are there enough fliers and friends to make a difference? There will be more significant fires in the future which will require airstrip access close to where the fires actually are. Polo Flat can't be used because it's been purchased for Snowy Hydro2 to use as industrial land Canberra Airport is too far away and requires fire traffic to be interwoven with RPT While big planes get their share of the media footage
  8. I'm assuming that it's the Department of Home Affairs which is responsible for the design and impmentation of ASIC. It's a pity that the funding associated with this wasn't spent on something useful. When you compare the recent busts of crime organisations through the clever use of "secure phones" which was probably done for a fraction of the cost of ASIC and compare it's efficacy you'd think that funding would be diverted to those who have actually done something useful.
  9. In a world were there were lots of autonomous flying vehicles I doubt that they'd base navigation on a single technology. Even the cheapest drones have reasonable accurate accelerometers and inertial mechanisms, more complex ones have a complex set of fallback mechanisms. Dense airspace issues can be solved relatively simply if there's a requirement, there's just no requirement. Look at ADS-B, the numpties built this protocol with zero security. Anyone can spoof broadcast creating phantom flying objects, the security associated with mobile phones is immeasurably better as each phone
  10. It's not only the cooler temperatures, the extra exhaust gasses reduce the oxygen concentration and perturb the "equilibrium reaction" pushing it to the left. So less NOX produced.
  11. I think that it would be a long bow trying to claim that this isn't a separate flight, did the pilot have a glass of wine with dinner, if yes does this mean he was drinking during the flight?
  12. You may find yourself in breach of the local security regulations though, trying to argue legal doctrine with a security guard may be painful. Also it appears that some airports require any visitors to get local security passes as well. The problem is that some local councils have implemented security policies under the guise of the ATSI regulations and believe that any breach of them is a Federal issue.
  13. That's a bit of a no-brainer, NO is produced by the combustion process rather than anything inherent to the fuel, the higher the combustion temperature the more NO. It a bit like saying that poos from synthetic meat still smell bad. The strange thing is that they don't actually say what the e-fuel was, based on the emissions with the higher ammonia level it looks like they were included an ammonia based fuel. Diesel engines produce more NO than equivalent petrol engines simply because the combustion temperature is higher than petrol engines can achieve. This also provides greater eff
  14. The whole work from home thing has slightly changed the dynamic. Not really talking about flying cars here however if you only need to the office once a week or fortnight if at all, with the occasional client site visit, where you live and the effort that you might put into getting to the office changes. What I'd like is to be able to fit a motorbike in the plane. ;-)
  15. As stated I wouldn't mind the process if it had an actual outcome. However it's so poorly implemented that it just doesn't deliver.
  16. Basically it's pretty much mandatory when getting your flight training as you're are flying into major airports. What I didn't understand until later was how half arsed and clueless the whole scheme was. The whole point is if you want to realize the benefits you need to make the system revolve around the identity piece, the ASIC card that you've created. That can't happen at the moment because it's such a poor implementation. The security guard who you ring can't actually verify your identity effectively. How does the system work with overseas pilots and aircrew. How do plane inspect
  17. Large parachute type sails were developed as well. https://en.wikipedia.org/wiki/SkySails Wind suffer from the same issues on the sea as on land, intermittency so the gains aren't as large on some routes as they are on others.
  18. While I like the appeal of a flying car the practice has turned out to be easier said than done. Traffic management could be done if there was a requirement. For example the current status quo is to import and post process air traffic data on to look for potential near misses. If there was the desire to, this could be done in real time, compute power isn't the limiting factor it's the perception that there's no need. If the need arises the capability is there.
  19. Where the winds go the ships don't go so much. When ships used wind the roaring forties were popular.
  20. ASIC cards and the associated protocols are fundamentally broken. If we assume that there is a net benefit from the process there is an enormous shortfall in the actual implementation which negates any net benefit. Below is a list of issues The card is a "Dumb Card" essentially just a piece of plastic with a photo easily copied A smart card solution would provide a secure element which could provide a strong identity and be readable via a mobile phone and provide physical access. For instance a security guard could check the card using an app on their phone. Standard such a
  21. Nuclear ships may make a comeback. It's not as if it a new idea and shipping generates more CO2 than the entire aviation industry. https://www.forbes.com/sites/jamesconca/2020/11/09/international-marine-shipping-industry-considers-nuclear-propulsion/?sh=4bf84fcf562c
  22. It wasn't meant to be disparaging I think that he's done a great job of building wealth in Australia. Steel production is currently very carbon intensive, Twiggy's business revolves around iron ore. This is a problem for his business model. You can make mostly green steel using Hydrogen by directly reduced iron (DRI) and then further processing it in an electric arc furnace. This is viable if H2 becomes cheap enough which it may do, the most efficient plant for the production of H2 is estimated to product H2 for about US 60c/kg over the life of the plant. This doesn't include power or sto
  23. Yes he's been doing it for a while. The only reason I can see him doing this for is to lower the carbon emissions of steel manufacture. He's hoping to combine a healthy dose of government funds with an industry opportunity.
  24. Interesting looking plane, was the front freight loading the reason for the canopy bulge?
  25. OK they're magic then. Special engines made from unobtainium.
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