At high altitudes, the operating environment for an aircraft can drop below zero degrees Fahrenheit. Combined with seasonally cold temperatures, keeping the cabin warm is a necessity, not just a luxury. Fortunately, there are a wide variety of heating systems and methods to keep a plane’s interior at a comfortable temperature.
Bleed Air Systems
Commonly used by pressurized aircraft, bleed air systems use air conditioning to mix bleed air from the aircraft’s engines with air produced by the air cycle machine expansion turbine to make warm air suitable for the cabin. Other arrangements include using mini ejectors in a helicopter’s cabin to mix bleed air into the cabin, but they are universally simple and function well as long as the various valves, ducting, and controls are properly maintained.
Electric Heating Systems
Some heating systems will use electricity to warm the cabin. Electricity is run through a heating element, and fresh air is blown over the elements and into the cabin itself to transfer the heat. Floor and sidewall elements can also be used to heat the cabin. These systems, however, use a significant amount of the aircraft generator’s output, which restricts their use to the ground only. During flight, they are typically shut off to conserve power for other devices such as the instruments, avionics, and control surfaces.
Exhaust Shroud Heaters
Most single-engine civilian aircraft make use of exhaust shroud heaters. Ambient air is directed into a metal shroud or jacket that surrounds part of the engine’s exhaust system, where it is warmed and then circulated back into the cabin. The one concern with these systems is the possibility of a crack in the exhaust system, which can lead to carbon monoxide leaking into the cabin. Frequent inspections and maintenance will prevent this from becoming an issue.
Combustion Heater
Small to medium-sized aircraft will use a small combustion engine independent of the main propulsion engine to provide heat in a similar method as a shroud exhaust heater. This engine uses its own fuel valve and ignition system and does not contribute to the propulsion of the aircraft.
At Aerospace Aces, owned and operated by ASAP Semiconductor, we sell aircraft heating systems and parts from top manufacturers around the world.
Part No | Description | RFQ |
---|---|---|
09E47 | regulator overhaul | RFQ |
10D48 | 10d48 servicable vibrator | RFQ |
11E31-1 | 11e31-1 motor overhaul 24 vdc | RFQ |
17E12 | 17e12 ignition unit overhauled 12 vdc (long legs) | RFQ |
18E30-1 | nozzle holder solenoid assembly overhaul | RFQ |
285CAL | pdt calibration | RFQ |
CD09D77 | cd09d77 nozzle holder gasket | RFQ |
CD20803 | fuel regulator, 24 vdc 1.0 amp | RFQ |
CD21156 | cd21156 fuel nozzle 2.30 gph | RFQ |
CD21163 | cd21163 fuel nozzle, 1.35 gph | RFQ |
CD21166 | cd21166 fuel nozzle, 3.00 gph | RFQ |
CD21168 | cd21168 fuel nozzle, 1.20 gph | RFQ |
CD21170 | cd21170 fuel nozzle, 2.00 gph | RFQ |
CD21171 | cd21171 fuel nozzle, 2.25 gph | RFQ |
CD21185 | cd21185 fuel pump universal | RFQ |
CD21192 | cd21192 valve, solenoid | RFQ |
CD21194 | cd21194 valve, solenoid | RFQ |
CD21250 | cd21250 universal lead kit | RFQ |
CD21285 | cd21285 fuel nozzle holder assy. | RFQ |
CD21295 | cd21295 nozzle holder assembly | RFQ |
CD21330 | cd21330 kit, lead repair | RFQ |
CD21346 | cd21346 filter replacement kit needed 250 hours or 2 years after cd21340 installed | RFQ |
CD21348 | cd21348 o-ring | RFQ |
CD21379 | cd21379 shock mount- package of three | RFQ |
CD21380 | cd21380 ignition unit 12vdc | RFQ |
CD21387 | cd21387 ignition mount | RFQ |
CD21399 | cd21399 switch, control thermostat linear rheostat, attaches to push-pull cable (low to high) | RFQ |
CD21402 | permanent magnetic motor, 24 vdc | RFQ |
CD21412 | single row ball bearings, package of two | RFQ |
CD21426 | switch, overheat manual reset | RFQ |
CD21517 | 1 inch o.d. with .5 inch i.d. gasket | RFQ |
CD21600 | cd21600 heater control switch | RFQ |
CD22030 | cd22030 spark plug assembly | RFQ |
CD22050 | cd22050 spark plug | RFQ |
CD22550 | combustion air switch | RFQ |
CD29111 | fuel pump assy | RFQ |
CD29127 | cd29127 fuel train | RFQ |
CD31073 | electrode is faa approved to directly replace janitrol 51a05 | RFQ |
CD31110 | cd31110 blower motor assembly | RFQ |
CD40690 | kit airflow/ switch assembly cd40690 | RFQ |
CD40700 | spark plug cd40700 | RFQ |
CD41209 | number plate | RFQ |
CD41210 | number plate cd41210 | RFQ |
CD65C65 | cd65c65 coil, ignition | RFQ |
CD70011 | pdt expansion bulb 1-1/8" | RFQ |
CD70012 | expansion bulb 1-9/16" | RFQ |
CD70015 | supply assembly - 3/4" replaces p201.57 | RFQ |
CD70017 | supply assembly 1-1/2" | RFQ |
CD70019 | supply assembly 2 | RFQ |
CD70070 | supply | RFQ |
CD70082 | gauge | RFQ |
CD70084 | pdt temperature probe | RFQ |
CD70089 | gauge | RFQ |
CD70091 | regulator low pressure | RFQ |
CD70092 | regulator high pressure | RFQ |
CD70100 | self-contained c&d associates pressure decay tester | RFQ |
CD70104 | gauge high pressure | RFQ |
CD70106 | minihelic gauge | RFQ |
CD70113 | fitting 1/8" | RFQ |
CD70116 | pdt tubing | RFQ |
CD70121 | lamp | RFQ |
CD70144 | coupler body | RFQ |
CD70150 | training station for aircraft combustion heaters | RFQ |
CD70219 | water manometer holder | RFQ |
CD70220 | water manometer inches | RFQ |
CD70222 | pressure switch adaptor | RFQ |
CD93C31 | cd93c31 ignition coil 24 vdc system | RFQ |
RA-07D29 | overheat switch - manual reset | RFQ |
RA-14E00-1 | serviceable vibrator | RFQ |
RA-17D86 | gasket | RFQ |
RA-21425 | switch, overheat auto reset prevents overheating by shutting down at 175 degrees | RFQ |
RA-21450-1 | brush kit, set of two- .25"x.25" | RFQ |
RA-21454 | spring brush | RFQ |
RA-29D28 | head gasket | RFQ |
RA-41411 | bumper, isolation | RFQ |
RA-41427 | switch, overheat kit | RFQ |
RA-45A28 | washer | RFQ |
RA-474669 | gasket | RFQ |
RA-474942 | igniter assembly serviceable | RFQ |
RA-476229 | ra-476229 gasket, washer | RFQ |
RA-52A02 | gasket, head | RFQ |
RA-55D91 | nozzle holder gasket | RFQ |
RA-704983 | kit, nozzle and solenoid service | RFQ |
RA-720141 | o-ring | RFQ |
RA-720963 | sponge, silicone gasket | RFQ |
RA-720965 | exhaust shroud gasket silicone sponge | RFQ |
RA-735411 | seal with connector and couplings | RFQ |
RA-82A54 | ra-82a54 gasket | RFQ |
RA-83A45 | gasket, spark plug housing | RFQ |
RA-A55D91 | gasket, nozzle holder (s-series) | RFQ |
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