1
$\begingroup$

What are the names and the function of these aircraft components?

These images were taken from a Cessna 150 aircraft containing a Continental O-200 engine.

$\endgroup$
  • 2
    $\begingroup$ Related, in case you don't have all answers: C150 service manual. After 1976, this one. $\endgroup$ – mins Dec 24 '16 at 13:14
  • 1
    $\begingroup$ Are you the pilot, owner or mechanic? $\endgroup$ – vasin1987 Dec 24 '16 at 13:52
2
$\begingroup$

1 - nutplate holding something on the other side of the firewall

2 - starter or master contactor (a relay operated by low-current signal from cockpit switch)

4 - positive heavy-gauge cable to battery or starter

5 and 6 might be the alternator voltage regulator to hold the output voltage at 14.4V

10 - oil filter to remove carbon and other crud from oil

11 and 23 - magneto to provide carefully-timed high voltage pulses at for ignition

12 - alternator to charge battery and run electric instruments / radios

14 - vacuum pump to power gyroscopic flight instruments

15 - carburetor to meter air and fuel

21 - crankcase vent (?) to prevent blow-by gases from forcing oil out of the engine

22 - fuel strainer drain valve to drain water / crud from low point in fuel system

Better pictures would help to identify the other parts!

$\endgroup$
  • $\begingroup$ Are you sure it's a 12v (14.4) system and not a 28v one? $\endgroup$ – Ron Beyer Dec 24 '16 at 14:59
  • 1
    $\begingroup$ @RonBeyer C150s have 12V systems by design. I suppose someone could change out of r a 28V system if they really wanted to. $\endgroup$ – J Walters Dec 24 '16 at 15:02
  • $\begingroup$ I believe 2 is specifically the starter solenoid. I believe the master solenoid is below the battery box. $\endgroup$ – J Walters Dec 24 '16 at 16:16
1
$\begingroup$
1 - nutplate holding something on the other side of the firewall

2 - starter or master contactor (a relay operated by low-current signal from cockpit switch)

4 - positive heavy-gauge cable to battery or starter

5 and 6 might be the alternator voltage regulator to hold the output voltage at 14.4V

10 - oil filter to remove carbon and other crud from oil

11 and 23 - magneto to provide carefully-timed high voltage pulses at for ignition

12 - alternator to charge battery and run electric instruments / radios

14 - vacuum pump to power gyroscopic flight instruments

15 - carburetor to meter air and fuel

21 - crankcase vent (?) to prevent blow-by gases from forcing oil out of the engine

22 - fuel strainer drain valve to drain water / crud from low point in fuel system

And to fill in the missing items:

3 - Rubber nipple protecting the energize conductor for the item 1 contactor

6 - Over voltage sensor (shuts off alternator if voltage is too high)

7 - Vacuum hose to cockpit (feeds air powered instruments)

8 - Avionics cooling duct inlet.

9 - static pressure port.

13 - left side exhaust muffler / cabin heat exchanger.

16 - Induction air filter

17 - Induction air box including carb heat valve.

18 - Engine data plate.

19 - Spark plug.

20 - Air inlet for cabin heat system.

23 - Right magneto.

24 - Oil filler cap.

25 - Rubber nipple protecting battery positive wire terminal.

26 - Battery box.

$\endgroup$
  • 1
    $\begingroup$ I believe 6 is not an over-voltage sensor but the radio noise filter. $\endgroup$ – J Walters Dec 24 '16 at 16:13
  • $\begingroup$ @JonathanWalters You are correct. Thanks $\endgroup$ – Steve H Dec 24 '16 at 16:23
0
$\begingroup$
  • 8 may be the AC system intake
  • 9 is the static port for the pressure-based instruments

  • 15 looks like a fuse box

  • 18 is the engine information plate

  • 19 is a spark plug
$\endgroup$
  • $\begingroup$ What kind of Cessna 150 has air conditioning? Probably just cabin air intake $\endgroup$ – pericynthion Dec 24 '16 at 14:44
  • $\begingroup$ 8 is an avionics vent intake; 15 is the Carburetor; 18 is more properly called the engine data plate; $\endgroup$ – J Walters Dec 24 '16 at 16:07

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.