Sponsor Message:
Military Aviation & Space Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Military Aircraft And Turboprop  
User currently offlineDanfearn77 From United Kingdom, joined Jul 2008, 1813 posts, RR: 8
Posted (5 years 8 months 3 weeks 5 days 15 hours ago) and read 8758 times:

Hi Guys

Now i know absolutely nothing about military aviation so be kind!

But something has been bugging me for ages. For 3 years since i finished a physics project on turbofans. Its simple really. Why do a large number of military aircraft use turboprops? Like the new A400m. So why do they use turboprop over jet engines like turbofans?

Thanks for your feedback.


Eagles may soar high, but weasels dont get sucked into jet engines!
6 replies: All unread, jump to last
 
User currently offlineSkyyKat From , joined Dec 1969, posts, RR:
Reply 1, posted (5 years 8 months 3 weeks 5 days 15 hours ago) and read 8740 times:

My personal hypothesis.

-Ability to operate from unprepared runways.
--(Turbofans are susceptible to FOD)

-Better short and high altitude field performance.

-STOL Performance

-Efficiency for certain roles they are used for Turbofans cant match.

-Ruggedness

I am sure there are many more reasons.


User currently offline2H4 From United States of America, joined Oct 2004, 8955 posts, RR: 59
Reply 2, posted (5 years 8 months 3 weeks 5 days 9 hours ago) and read 8632 times:
AIRLINERS.NET CREW
DATABASE EDITOR



Quoting Danfearn77 (Thread starter):
So why do they use turboprop over jet engines like turbofans?

A perfectly fair question. But if you're intrigued by engine choices, and if you'd like to tackle a more challenging question, see if you can figure out why this aircraft used a jet engine instead of a turboprop:


View Large View Medium
Click here for bigger photo!

Photo © Andreas Mueller - Spotterteam Graz
View Large View Medium
Click here for bigger photo!

Photo © Andras Kisgergely



2H4



Intentionally Left Blank
User currently offlineZBBYLW From Canada, joined Nov 2006, 1985 posts, RR: 6
Reply 3, posted (5 years 8 months 3 weeks 4 days 19 hours ago) and read 8474 times:



Quoting 2H4 (Reply 2):
A perfectly fair question. But if you're intrigued by engine choices, and if you'd like to tackle a more challenging question, see if you can figure out why this aircraft used a jet engine instead of a turboprop:

Would it have anything to do with the soviets having an abundance of the A-25 (I think this is the engine) engines in such things as the L-39 so it would have been easier to find replacements etc?



Keep the shinny side up!
User currently offline2H4 From United States of America, joined Oct 2004, 8955 posts, RR: 59
Reply 4, posted (5 years 8 months 3 weeks 4 days 16 hours ago) and read 8439 times:
AIRLINERS.NET CREW
DATABASE EDITOR



Quoting ZBBYLW (Reply 3):

Would it have anything to do with the soviets having an abundance of the A-25 (I think this is the engine) engines in such things as the L-39 so it would have been easier to find replacements etc?

Perhaps, although I personally think the abundance of vodka had a bit more to do with the development of this particular aircraft.

2H4



Intentionally Left Blank
User currently offlineEBJ1248650 From United States of America, joined Jun 2005, 1932 posts, RR: 1
Reply 5, posted (5 years 8 months 3 weeks 4 days 15 hours ago) and read 8417 times:



Quoting SkyyKat (Reply 1):
My personal hypothesis.

-Ability to operate from unprepared runways.
--(Turbofans are susceptible to FOD)

-Better short and high altitude field performance.

-STOL Performance

-Efficiency for certain roles they are used for Turbofans cant match.

-Ruggedness

I am sure there are many more reasons.

Where performance is concerned, don't turboprops accelerate the airplane a lot faster during takeoff? Makes for shorter takeoff runs, something perhaps even a high performance turbofan can't match.



Dare to dream; dream big!
User currently offlineSpacepope From Vatican City, joined Dec 1999, 2930 posts, RR: 1
Reply 6, posted (5 years 8 months 3 weeks 4 days 15 hours ago) and read 8406 times:

Turboprops also pu a lot of the wing in the propwash, generating some additional lift as well. Very few jets do this, save the AN 72/74 in servicem and the prototype YC-14.

Just look at the AN-32. The larger props and higher mounted engines throw a lot of wash over that wing compared to the AN-24/26.

Another fun one is the P-3, where there is barely any wing that is NOT behind props.



The last of the famous international playboys
Top Of Page
Forum Index

Reply To This Topic Military Aircraft And Turboprop
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Military aviation related posts only!
  • Not military related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Military Planes And N Numbers? posted Wed Jul 2 2008 15:15:22 by Rscaife1682
What Is The Second Oldest Active Military Aircraft posted Wed Jun 4 2008 15:40:30 by ACW367
Pilot Safety In Military Aircraft posted Wed Feb 13 2008 03:49:40 by SpenceSaab
EU Set To Regulate Military Aircraft Emissions posted Tue Nov 13 2007 04:04:51 by Lumberton
Future International Military Aircraft posted Wed Oct 3 2007 15:30:59 by PMN1
Legalities Of Photographing Military Aircraft? posted Tue Jun 19 2007 14:51:33 by OzTech
Strange Engine Choices On Military Aircraft posted Wed Jun 6 2007 23:28:04 by A342
Large Military Jet And Escort Over PDX posted Sun Jun 3 2007 21:43:06 by KPDX
Speed-Gauge / Mach Indicators In Military Aircraft posted Fri May 25 2007 06:24:57 by Blackbird
Loudest Military Aircraft? posted Sat Feb 3 2007 00:43:16 by KevinSmith

Sponsor Message:
Printer friendly format