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 |
---|---|---|
CD21255 | cd21255 replaces push-pull cable | RFQ |
CDA09D77 | nozzle holder gasket | RFQ |
CDA07D67 | single strip wheel cda07d67 | RFQ |
CD22070 | cd22070 spark plug | RFQ |
CD70200 | pdt pressure decay tester kit, new | RFQ |
CD70104 | gauge high pressure | RFQ |
CD21379 | cd21379 shock mount- package of three | RFQ |
CD21380 | cd21380 ignition unit 12vdc | RFQ |
CD21194 | cd21194 valve, solenoid | RFQ |
CD21516 | 1 inch od .47 inch id gasket | RFQ |
CD41210 | number plate cd41210 | RFQ |
CD12C60 | cd12c60 vibrator s series heater | RFQ |
CD21160 | cd21160 fuel nozzle 2.8 gph | RFQ |
CD31073 | electrode is faa approved to directly replace janitrol 51a05 | RFQ |
CD21285 | cd21285 fuel nozzle holder assy. | RFQ |
CD70010 | pdt expansion bulb 7/8" for up to 1-1/2" diameter outlet | RFQ |
CD70116 | pdt tubing | RFQ |
CD31077 | cd31077 washer | RFQ |
RA-720963 | sponge, silicone gasket | RFQ |
CD21401 | long life, 12 vdc motor better by design | RFQ |
CD70083 | gauge | RFQ |
RA-25T64-1-1 | package of two carbon brush kit | RFQ |
CD70133 | pdt t fitting | RFQ |
CD20639 | cd20639 fan wheel | RFQ |
RA-41426 | switch, kit | RFQ |
PDTCALIBRATION | pdt calibration annual calibration of your test unit | RFQ |
RA-55D91 | nozzle holder gasket | RFQ |
CD21184 | cd21184 fuel pump universal | RFQ |
41C74 | ignition lead overhaul for s series heaters | RFQ |
CD60332 | cd60332 washer | RFQ |
RA-41405 | brush, permanent | RFQ |
CD29112 | fuel pump assy. 12 vdc | RFQ |
CD70113 | fitting 1/8" | RFQ |
CD21296 | cd21296 fuel nozzle assembly | RFQ |
RA-700146 | isolation mount package of three | RFQ |
RA-718768-22 | o-ring | RFQ |
RA-83D55-1 | mixer | RFQ |
RA-21452-3 | set of 2 carbon brushes- .25" x .25" make up ra-21452-3 brush kit | RFQ |
11E31-1 | 11e31-1 motor overhaul 24 vdc | RFQ |
RA-41425 | switch, overheat kit | RFQ |
CD20801 | 24vdc regulator | RFQ |
CD70018 | pdt supply | RFQ |
RA-474942 | igniter assembly serviceable | RFQ |
CD70145 | coupler bulkhead | RFQ |
CD70035 | pdt cap and plugs kit | RFQ |
CD21155 | cd21155 fuel nozzle 2.08 gph | RFQ |
RA-25T57-3-1 | extruded ears carbon brush, .25" x .25" package 2 | RFQ |
RA-720965 | exhaust shroud gasket silicone sponge | RFQ |
RA-D02C12 | ra-d02c12 spark plug | RFQ |
CD70106 | minihelic gauge | RFQ |
CD21426 | switch, overheat manual reset | RFQ |
RA-704983 | kit, nozzle and solenoid service | RFQ |
CD21154 | cd21154 fuel nozzle 1.35 gph | RFQ |
RA-14E00-1 | serviceable vibrator | RFQ |
RA-A55D91 | gasket, nozzle holder (s-series) | RFQ |
CD70105 | gauge low pressure | RFQ |
CD21161 | cd21161 fuel nozzle .65 gph | RFQ |
CD70100 | self-contained c&d associates pressure decay tester | RFQ |
CD29151 | distribution modification kit | RFQ |
CD22550 | combustion air switch | RFQ |
CD21384 | cd21384 fan four blade | RFQ |
CD30500 | fan, 4 blade mini | RFQ |
RA-735111 | gasket, fuel pump | RFQ |
CD29111 | fuel pump assy | RFQ |
CD21171 | cd21171 fuel nozzle, 2.25 gph | RFQ |
CD31206 | ignitor/ spark plug | RFQ |
CD21186 | cd21186 fuel pump universal | RFQ |
CD21156 | cd21156 fuel nozzle 2.30 gph | RFQ |
CD20803 | fuel regulator, 24 vdc 1.0 amp | RFQ |
CD29124 | regulator assembly, high pressure | RFQ |
CD21157 | cd21157 fuel nozzle 1.75 gph | RFQ |
CD21250 | cd21250 universal lead kit | RFQ |
CD21193 | cd21193 valve, solenoid 24 vdc normally closed | RFQ |
CD21196 | cd21196 fuel pump universal | RFQ |
CD22050 | cd22050 spark plug | RFQ |
CD70013 | expansion bulb 2-1/4" | RFQ |
17E12 | 17e12 ignition unit overhauled 12 vdc (long legs) | RFQ |
722099 | blower assembly, comb. overhaul | RFQ |
RA-21175 | ra-21175 aircraft heater replacement part, fuel nozzle | RFQ |
CD70084 | pdt temperature probe | RFQ |
CD09D77 | cd09d77 nozzle holder gasket | RFQ |
10D48 | 10d48 servicable vibrator | RFQ |
CD70150 | training station for aircraft combustion heaters | RFQ |
CD70144 | coupler body | RFQ |
CD21412 | single row ball bearings, package of two | RFQ |
CD21184A | cd21184a fuel pump universal | RFQ |
CD70090 | magnehelic gauge | RFQ |
CD21388 | cd21388 ignition mount | RFQ |
RA-21450-1 | brush kit, set of two- .25"x.25" | RFQ |
CD20800 | regulator, fuel shutoff | RFQ |
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