Air Enthusiast
how is density related to an aircraft engine being able to produce more or less thrust during a hot/cold day?
hey peeps this question has always gotten me confused due to air being less or more dense based on humidity for a hot or cold day, especially when it is related on a molocular level ......so for any of you aircraft enthusiast ...pls HEEELLP!!
Ok, no one answered the question of density.
Humidity is water vapor that is suspended in an airmass.
Water Vapor molecules are less dense than air molecules, meaning that the more water vapor (humidity) air has the less dense it is. Density is mass per volume, so the more mass it has the more dense, meaning the drier the air has more higher the density. Temperture is related to volume and pressure, so the higher the temperture, the more volume, and less pressure. so if mass is constant, and volume is increased (higher temp), the less dense it is. This is why cold, dry days have the highest density, and usually pressure will be much higher than hot days.
In physics, Force = Mass x Acceleration, so the more mass a volume of air has the more force is can produce when accelertion is constant. This is how an engine can produce more power when flying in cold dry air, as the air has more mass, and the acceleration (combustion) of the engine is constant, the more power it can create.
 |
 Air Enthusiast Vol5 No5 Canadair CL 84 Mu 2J K Toryu $12.95 Time Remaining: 3d 14h 7m Buy It Now for only: $12.95 |
 Air Enthusiast 15 Handley Page Halifax Spad DC 4 Supermarine 510 Hawker Short C $22.95 Time Remaining: 3d 14h 32m Buy It Now for only: $22.95 |
 AIR ENTHUSIAST V5 N5 WW2 LUFTWAFFE HEINKEL He 51 COLOR $12.95 Time Remaining: 5d 11h 35m Buy It Now for only: $12.95 |
 AIR ENTHUSIAST MAY 72 WW2 JAPAN KIKKA JET FIGHTER $12.95 Time Remaining: 5d 11h 35m Buy It Now for only: $12.95 |
 AIR ENTHUSIAST V5 N6 WW2 JAPAN KAWASAKI Ki45 TORYU IJA $12.95 Time Remaining: 6d 2h Buy It Now for only: $12.95 |
 AIR ENTHUSIAST JUN 72 WW2 LUFTWAFFE He162 VOLKSJAGER $12.95 Time Remaining: 6d 2h Buy It Now for only: $12.95 |
 AIR ENTHUSIAST V4 N5 WW2 RAF VICKERS WELLINGTON BOMBER $12.95 Time Remaining: 6d 2h Buy It Now for only: $12.95 |
 AIR ENTHUSIAST JUL 72 WW2 JAPAN NAKAJIMA Ki 44 TOJO $12.95 Time Remaining: 6d 2h 6m Buy It Now for only: $12.95 |
 Air Enthusiast Quarterly Magazine 12 Fokker F Vll $9.95 Time Remaining: 8d 2h 32m Buy It Now for only: $9.95 |
 Air Enthusiast Quarterly Magazine 6 Japan Type 97 $14.95 Time Remaining: 9d 9h 17m Buy It Now for only: $14.95 |
 Air Enthusiast May 72 Harrier T Mk 2 U 2 Lockheed $5.95 Time Remaining: 9d 11h 56m Buy It Now for only: $5.95 |
 Air Enthusiast June 72 Lynx Heinkel He 162 Firefly $5.95 Time Remaining: 9d 22h 29m Buy It Now for only: $5.95 |
 Air Enthusiast 7 1972 Shoki Vultees Daimler V 11 $5.95 Time Remaining: 11d 33m Buy It Now for only: $5.95 |
 Air Enthusiast Jan73 A 9A A 10A Dornier Do 335A 0 $5.95 Time Remaining: 13d 13h 3m Buy It Now for only: $5.95 |
 Air Enthusiast Magazine 3 Kittyhawk Wildcat Hawker Roland B 29 RCTX 4 MiG 29 $22.95 Time Remaining: 13d 22h 41m Buy It Now for only: $22.95 |
 Air Enthusiast No2 Allison Mustangs LA 5 Gran Chaco Nieuport Gauntlet Reggiane $22.95 Time Remaining: 13d 22h 48m Buy It Now for only: $22.95 |
 Air Enthusiast 4 Douglas X 3 P 61 Black Widow Sopwith Pup France Tupolev Tu 2S $22.95 Time Remaining: 13d 22h 57m Buy It Now for only: $22.95 |
 Air Enthusiast 10 Swallow Boeing 307 Stratoliner DH 88 Comet Iraq Short Stirling $22.95 Time Remaining: 13d 23h 8m Buy It Now for only: $22.95 |
 Air Enthusiast UK 6 72 Cockpit Evolution 1913 1930+ $6.95 Time Remaining: 14d 16h 50m Buy It Now for only: $6.95 |
 Air Enthusiast UK 4 74 RAF Anniversary Issue Snipe+ $6.95 Time Remaining: 14d 16h 51m Buy It Now for only: $6.95 |
 Air Enthusiast No 12 T 33 F 94IL 2 OOP $11.99 Time Remaining: 18d 11h 58m Buy It Now for only: $11.99 |
 Air Enthusiast Dec72 Mig 17 Mig 15 Sikorsky S 61 $5.95 Time Remaining: 20d 5h 9m Buy It Now for only: $5.95 |
 Air Enthusiast Feb72 German F 4F Phantom Liberator $5.95 Time Remaining: 23d 19h 9m Buy It Now for only: $5.95 |
 Air Enthusiast Sept1972 Me 163 Komet Avia Aviatik $5.95 Time Remaining: 24d 13h 53m Buy It Now for only: $5.95 |
 Air Enthusiast Quarterly Magazine 9 Boeing 100 RAF $14.95 Time Remaining: 24d 14h 34m Buy It Now for only: $14.95 |
 Air Enthusiast Quarterly Magazine 21 Dornier Korea $9.95 Time Remaining: 24d 14h 34m Buy It Now for only: $9.95 |
 Air Enthusiast Quarterly Magazine 11 HA 300 Jet AOP $9.95 Time Remaining: 24d 14h 34m Buy It Now for only: $9.95 |
 Air Enthusiast Magazine November 1979 $7.99 Time Remaining: 24d 21h 24m Buy It Now for only: $7.99 |
 Vintage Air Enthusiast Magazine November 1971 $7.99 Time Remaining: 24d 21h 24m Buy It Now for only: $7.99 |
 Air Enthusiast Magazine May 1984 $7.99 Time Remaining: 24d 21h 24m Buy It Now for only: $7.99 |
 Air Enthusiast Mar 73 Gloster Gladiator Springbok $5.95 Time Remaining: 24d 22h 54m Buy It Now for only: $5.95 |
 Air Enthusiast Sept71 Lancer Concord Bf 109E TU 4 Handly Page Luftwaffe $9.95 Time Remaining: 25d 9h 43m Buy It Now for only: $9.95 |
 Air Enthusiast Oct71 RAF Fighters Boeing B 29 Vietnam MiG Fighter Soviet $9.95 Time Remaining: 25d 9h 45m Buy It Now for only: $9.95 |
 Air Enthusiast Oct73 $5.95 Time Remaining: 25d 13h 54m Buy It Now for only: $5.95 |
 Air Enthusiast Dec73 $5.95 Time Remaining: 26d 13h 43m Buy It Now for only: $5.95 |