Thruster88

Twins most often go down because of a thing called Vmc roll over.

Sure, more weight in a 40,50:1 LD glider will make them go faster, they are powered by potential energy after all. More weight in a powered aircraft = less climb rate, less cruise speed for a given power setting so less effcient.

No definitive answer yet. The cruise performance chart for my muskeeter shows maximum range is achieved at the highest altitude in the chart, 10500 and the lowest power setting, 50%. 784nm in 8.6 hours. No wieght is stated so presume this is at MTOW. Higher power at lower levels reduces range by 130 nm.

Horizontal stabilizer has to push down more than usual so more lift on main wing required so more drag from wing and tail, more load on wing results in higher stall speed.

A little bored atm so i thought why not calculate the maximum force on the carb bowl of a Rotax 914, 6 years in development and now 29 years in production, unchanged, i would call that a succsess. So standard 912 80hp carb inlet pressure at sea level = 15psi. 115/80 x 15 = 21.5 psi approx required to make 115hp. This engine has a critical altitude of 16,000 feet. At 16,000 feet atmo pressure is 7.96psi. So 21.5 - 7.96 = 13.54 psi pressure differential. Carb bowl is approx 2.25 x 2.5 inches = 5.625 sq in x 13.54 psi = 76lb or 34.5kg. Feel free to point out anywhere i have gone wrong. I did this in imperial units for skippy's enjoyment. From above posts, the boost pressure is in both the carb throat and bowl area so flow thru the jets is not affected as one might think.

Interesting point in the vid, "why dont manufacturers just limit the elevator travel so it can not reach stalling stick position". I believe this was done with the Ercoupe.

Not sure what you are trying to say here. Having done differential leak down tests with calibrated equipment on jabiru, rotax, continental, lycoming and pratt&wittney radial engines, repeatability and fault finding is excellent.

Lycoming have 12 year calender tbo. On condition is alowed by CASA for for private or airwork (flying trainig).

In Australia factory built aircraft, cessna 172 or Brumby or Tecnam cannot become experimental VH or 19-xxxx raaaus aircraft. CASA is the regulator of aircraft in Australia. A 19-xxxx can become an experiment VH or the other way if mtow is ok.

MARAP is what is called an Engineering Order in casa land. I am guessing people who do Engineering Orders for GA aircraft modifications have insurance in case they are sued. Most of the cost is probably legal liabilty insurance.

Here is an example of an automotive engine conversion with a mode of failure that should have be so obvious. No fault in the core engine, one wreaked aircraft. *** Final Report *** N15180 Titan T-51D Ashtabula, Ohio 06 JUL 2021 1 No Injury Pilot Flight Time: 8000 hours (Total, all aircraft), 4000 hours (Total, this make and model) The intent of the flight was to perform fuel flow and fuel indicator checks on the newly built airplane while taxiing on the ground; however, they were not able to obtain full engine performance on the ground and the pilot elected to take the airplane into the air. After takeoff, while climbing through 200 ft above ground level (agl), the engine lost power. The operator reported that the engine computer circuit breaker had tripped which resulted in the loss of engine power. The pilot attempted to reset the circuit breaker and restart the engine without success. The airplane landed hard on the runway and the left main landing gear collapsed. The left wing sustained substantial damage. A postaccident examination showed that the oxygen sensors used to tune the engine were left on the engine’s cylinder exhaust pipes during the flight. The sensors drew power from the engine’s control computer. During the initial climb, the increased electrical demand to run the oxygen sensors at maximum engine power exceeded the 15-ampere limit on the engine’s control computer, its circuit breaker to tripped, and the engine lost power. Probable Cause and Findings: The tripped engine control computer circuit breaker caused by an excessive electrical load on the system, which resulted in a complete loss of engine power during the initial climb.

Can we stick to aviation, there are other places to talk crap.

Flew to Tumut for their breakfast which they have on the 3rd sunday of every month. TAS165 in the RV speed machine, no time for pictures. Love the differences between the thruster and RV.

I have litespeed sierra, very happy.

I liked the vid of them showing stalling stick postion and spinning the Piper t tail tomahawk, no trauma.

I seem to remember some time back a pic of a members? fixed wing aircraft destroyed following engine failure of a 1.3 suzuki. Probably not a failure of the core engine.

The really sad thing is that less than a month after this report was released we have another loss of control and three more gone.

You could try listening to your favorite tunes on spotify.

The aircraft does not appear to have adsb. FR24 data has only come from atc radar.

In the days of the bmw m10 turbo a fresh engine for qualy and another fresh engine for the race. Now days a limit of only 4 engine per season without incuring penalty. Very rare now for an f1 engine to blow up despite high rpm and output from the 1.6l v6 turbo hybred engines. Go Oscar Piastri in '26.

The PIC in this accident was a CFI and aerobatic rated pilot.

How do you enter a spiral in VMC.

The spring could fracture allowing a piece to enter the engine. Would not be the first time an unforseen event has occurred from a modification of a system.

DGCA says no fault found in Boeing fuel control switch after Air India grounds plane WWW.BBC.COM The Boeing 787-8 jet was grounded after a pilot reported a possible issue with the fuel control switch.

The Buick/Oldsmobile 215 alloy v8 was used and modified with OHC heads by Jack Brabham and Repco to win the 1966 F1 world championship. Another car engine, the BMW M10 4 cylinder was used with a giant turbo to win the 1983 F1 championship. Car engines can sustain high output with the correct parts. There is the autobahn, sustained high speed running. The problem with car engines in aircraft is usually not the core engine, it is all the other stuff, reduction drive compatibility with propeller and crankshaft etc.