34
votes
Does a 120cc engine burn 120cc of fuel a minute?
This is possible, but still quite extreme fuel consumption.
120ml == 120cc gasoline are ~90g by mass
90g gasoline need about 1320g air in order to fully combust
1320g air are about 1.08 cubic meters ...
- 1,172
27
votes
Accepted
Why would a fighter drop fuel into a drone?
I read about four possibilities which the SU-27 pilots wanted to enforce:
a) Covering the drone in fuel and then igniting it with the afterburners which should have lead to a fire and subsequent ...
- 3,272
26
votes
Does a 120cc engine burn 120cc of fuel a minute?
No, a 120cc engine does not burn 120cc of fuel per minute. It means that the sum of the volumes of space swept by the pistons in each of the cylinders equals 120cc. This is called engine displacement....
- 6,564
15
votes
Why would a fighter drop fuel into a drone?
I don't know about catching fire, although they might get lucky, but I'd imagine that dumping a hefty quantity of liquid into the engine intake might well upset the engine enough to turn the drone ...
- 151
13
votes
Accepted
How is Fuel needed to be consumed calculated when MTOM and Actual Mass is known
Your thinking is correct, the fuel needed to be consumed is indeed the actual ramp mass - MTOM. That results in 3 kg of fuel.
What you forgot is to convert the weight into a volume (note that the ...
- 54.3k
8
votes
Accepted
How do rental prices that include fuel work if you refuel?
Every FBO that rents aircraft wet should have a published policy on this, possibly even in the rental agreement you signed.
In every case I’ve seen or heard of, you just submit the receipt for any ...
- 27.6k
8
votes
How diesel fuel is injected into the cylinder of a diesel engine?
The fuel is injected at the top of the compression stroke, timed as you would time the firing of a spark plug. The fuel starts to burn as soon as it atomizes in the combustion chamber due to the ...
- 126k
7
votes
How can I determine the fuel temperature in the tanks of an Airbus A320 during climb?
When a body at a certain temperature $T_i$ is blown upon by air at temperature $T_{air}$ there's an exchange of heat per second $\dot{Q}$ (in Watt) which is:
$\dot{Q}=hA(T_i -T_{air})$
where:
$A$ is ...
- 9,489
7
votes
Accepted
Does a 120cc engine burn 120cc of fuel a minute?
I would say it's unlikely, and is certainly not a rule of thumb. Fuel consumption depends on many variables, including:
Engine fuel and cycle type (e.g. 2-stroke petrol/gasoline)
Engine speed (RPM) ...
- 186
6
votes
Does a 120cc engine burn 120cc of fuel a minute?
The fuel burn of a very small 2 stroke with a crude carburetor is roughly .6 lbs/hp/hr. You can work it out from that. A 10hp engine running at a cruise power of 70% will use .6 x 7 = 4.2 lbs/hr at ...
- 126k
5
votes
What is the purpose of mixture control?
The throttle directly controls the air admitted to the engine. In a carburetor (and most gasoline engines with fuel injection as well) this is done with a "butterfly valve" in the intake ...
- 17k
5
votes
Why do planes explode upon high velocity impacts?
In the case of jet or turbo prop aircraft, the combustion section of the engine is continuously lit, and is not contained by a cylinder and valves like in a piston engine. When fuel tanks rupture you ...
- 24.8k
5
votes
Why would a fighter drop fuel into a drone?
I think the "fuel dump" is a complete secondary issue.
Whether it was a normal fuel dump, or unlit fuel poured into the unlit afterburner stream, or AB, or wake turbulence....
It was a ...
- 7,558
4
votes
Why would a fighter drop fuel into a drone?
Several possibilities exist as well as nonsense theories.
Possible scenarios
The dumped fuel could cause the drone engine to fail.
The dumped fuel could cause some sensors to fail and indeed obscure ...
- 1,656
4
votes
Accepted
Nutritional value of jet fuel (from a microbe's point of view) and which of their byproducts is causing the fuel tank corrosion?
The question is complex and really not really aviation-specific. Cars, trucks and especially boats and ships have similar problems.
The energy content of the fuel is well-known and some microorganisms ...
- 1,172
4
votes
How free are VTOL pilots to hover?
There are weight limitations associated with hovering and vertical landings. The F-35B, as I understand it, requires a A/C gross weight under 40,000 lbs in order to safely do this. This roughly ...
- 72.8k
4
votes
How do rental prices that include fuel work if you refuel?
When I've rented before (admittedly many years ago), the FBO / flight school provided a (credit) card to use for fueling, and they paid the monthly bill of course. Receipts were submitted for ...
- 526
4
votes
Does a 120cc engine burn 120cc of fuel a minute?
No. "120cc" is the swept volume of the cylinder
It represents how much volume of air the engine can breathe per cycle, not how much fuel it might use. It says nothing about fuel consumption....
4
votes
Do fuel tanks need to be pressurized?
Fuel tanks don't need to be pressurized, though they can be. Unpressurized tanks are vented to the atmosphere, and so a large pressure difference never develops in the first place.
In pressurized fuel ...
- 12k
3
votes
Why wasn't MH-17 flying at 33,000ft before it entered Ukrainian airspace?
In addition to the other answers, they didn't have to either.
As can be seen in this visualisation made by the Dutch Safety Board, the restrictions at that time concerned the eastern part of Ukraine; ...
- 2,265
3
votes
How free are VTOL pilots to hover?
VTOL pilots (and helicopter pilots) also prefer to avoid hovering unless necessary for another reason: safety.
Since the aircraft is operating at or close to 100% power output, if something in the ...
- 8,717
2
votes
Radar fuel level sensor
I've never heard of that kind of thing in aircraft in 40 years in the industry. Capacitance tubes are simple, very accurate, and solid state, that is, no moving parts, and work perfectly well, so ...
- 126k
2
votes
How can I determine the fuel temperature in the tanks of an Airbus A320 during climb?
The fuel temperatures in the wing fuel tanks are displayed to the pilots on the ECAM (electronic centralized aircraft monitor) FUEL page below the fuel quantity indications. Pilots can select this ...
- 2,366
2
votes
Accepted
Calculate Block Fuel based on Altitude, Temp, Taxi Fuel, Time for climb/approach and landing
I think Max R (in a since-deleted answer, "2:43 + :7 + :10 = a convenient 3.0 hrs") is right about adding the times to get 3 hours. Then,
3 hours x 12.4 GPH = 37.2 gal
37.2 Gal x 1.3 = 48....
- 49.8k
2
votes
Where I can get historical jet fuels prices?
...and for anyone looking for historical data before 1975 (which is when the data series at the US Energy Information Agency starts), FRED provides the authoritative dataset:
- 1,628
2
votes
Cessna 172S model starting procedure
I'm pretty sure what is happening is when you select idle cutoff to shut down, the drop in fuel pressure closes a diaphragm valve in the fuel distribution spider on top of the engine and the immediate ...
- 126k
2
votes
Why would a fighter drop fuel into a drone?
The idea of lighting the drone on fire is really more of a joke, just because it isn't a feasible method, as you said, it would change state to a gas really quickly at high speed and altitude.
Some ...
- 21
2
votes
How to measure fuel level from uneven tank?
The bottom of the tank is flat so you want to make sure the dipstick is touching the bottom. In any case, if you want accurate readings, it's not sufficient to just dip the fuel and estimate the level ...
- 126k
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