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RFguy started following Batteries with a BMS - Yes or No? , Cockpit heating Ideas , Narrow runway and 4 others
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yep. the cabin muffer shroud heater or water jacket heater produces literally kilowatts of heat for the cabin..... and it is there for free if you want to burn up 300W say in a resistive element, your alternator might take 500W of engine power to do it (2/3 of a horsepower) , and create an extras 1kW of heat doing that.... so, that's why every system uses waste heat . even the electric aircraft use Waste heat from the water cooled engine and water cooled motor driver.
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OK, so I looked at the whole video, not just the frozen picture in the post yeah that is a bit narrow. I wonder what the going was iike on the grass- IE if it would have appreciably braked one wheel, (as to pull it one way) or was hard packed. I wondered, wouldn't you be better off with all grass? Maybe it takes concrete for the takeoff to have a low enough rolling friction to get airborne before flying off the cliff.
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looks pretty wide to me
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UPS cargo plane crash. Louisville Kentucky
RFguy replied to danny_galaga's topic in Aircraft Incidents and Accidents
the chicago crash is well written up in Air Disasters 2 (Macarthur Job) -
Hearing aide and headsets what is a good match?
RFguy replied to Blueadventures's topic in Aircraft General Discussion
OK. MIke so he just needs, on the headset side - GA earphones plug to 3.5mm stereo line socket (with the appropriate resistors in there to get the levels right for the line level input) since the headset is a few volts and the line audio is a 0.15V ? send me his address I'll make something up . -
Hearing aide and headsets what is a good match?
RFguy replied to Blueadventures's topic in Aircraft General Discussion
I'm not fully sure I understand the question. He has bluetooth capable connected heading aids that he uses IE they have bluetooth aux input facility ? He flys ? He wants to use hearing aids with his aviation headset ? -
Hearing aide and headsets what is a good match?
RFguy replied to Blueadventures's topic in Aircraft General Discussion
I have made a prorotype of one intercom box (for GA aircraft) that takes care of boosting specific frequencies to suit the user, in a dynamic context sensitive manner. So that sources with lots of HF (high frequency) do not get boosted, but content lackin gin HF do etc. Inserted in series with headphones and mic. But this is domestic use ? JUst boosting some frequencies and not others.. Many TVs now have equalisers (like the three band low, medium and high) all my TVs do. That will be the best place to start. you can also turn on voltume equalization to avoid quiet passages what's really required is a dynamic equaliser that tries to maintain a specific amount of energy in specific frequency bands. on headphones for aircraft. : Whereas plain old headsets seems to generate the same amount of audio in the 'cans for different brands, the noise-cancelling type headphones seem to be all over the shop with respect to the amount of soound prooduced for a given input This is not unexpected given the type of algorithms and as an implementation engineer this is something some how they;ve f**cked up because its an obvious problem. -glen -
(post script - I just saw Facthunters comment - yes I have written the same line just remember (and this is something my instructor reminding me off one BFR) : it can take 'some time' to stop the aircraft descending quickly. especially if the aircraft has some weight.. (inertia) (IE not so applicable to a high drag, lightweight aircraft like a Thruster) To takes time to slow down the vertical descent rate. In the piper, I can slip at 1800 fpm with full flap and max rudder. (9 meters per second). Not much short of free fall. bringing the aircraft back to a nil descent rate may take several seconds. IE you dont want to be too near the ground.... Fortunately, you are usually going pretty slow when doing this so less likely to tear the wings off. Just like when you are going down in a lift and you feel gravity increase as it comes to a stop at the bottom. Nev's point above wing down (roll ) first is important - and you'll get this from correct instruction. ....In the simulator , If I boot full rudder into the piper without aileron first, I get a spin entry...
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I would NOT put a battery in to an aircraft that is capable of disconnecting itself if it doesnt like what it sees no way also, many charging systems rely on having a battery there as not to put alot of rubbish and spikes and unfiltered charge onto the system bus.... it's a filter. Yes, some installs have a capacitor, but that capacitor has a hard hot life in the engine bay and wears out in no time, and additionaly, the capacitor is about 1/4 of what's required without a battery
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and people on the ground wont hear a engine out gliding airplane (like at Mona Vale golf course last month) good reasons to have hooters on airplanes to alert people I the ground (covered in another forum post).
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looking for candid advice for getting around and into Brisbane.
RFguy replied to RFguy's topic in AUS/NZ General Discussion
thanks for all the input Gary , that seems like a good option. I will trial fly some of these options in the simulator. -
JABIRU PRICES FYI for the record 23 October 2025 Australian local buy price. 2200 Gen 4 Engine = AU$27,720 (GST Incl) + freight & insurance costs 3300 Gen 4 Engine = AU$34,870 (GST Incl) + freight & insurance costs Both engines come supplied with Ram Air Ducts / Exhaust / Accessory Pack. The Oil Cooler is not included in the purchase of an engine. My comment : allow about AUD$800 for the preferred/ shop installed for J230D 3300 oil cooler (8000075 aero classics- same as in many pipers and cessnas with 320/360s)
