Sponsor Message:
Civil Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Development Of Diesel Aircraft Engine.  
User currently offlineN312RC From United States of America, joined Aug 2000, 2684 posts, RR: 15
Posted (15 years 5 months 3 weeks 2 days 14 hours ago) and read 2181 times:

I just saw it on CNN HN, what's it all about? I heard that they could run on Jet A fuel, and eliminate mixture controls? Can someone tell me more?

3 replies: All unread, jump to last
User currently offlineXFSUgimpLB41X From United States of America, joined Aug 2000, 4300 posts, RR: 34
Reply 1, posted (15 years 5 months 3 weeks 2 days 14 hours ago) and read 2164 times:

Haha..i just watched that too. Jet A is cheaper than Avgas. I was wondering about not having a prop and mixture control myself. Most turboprops have a prop control and a throttle or the like.... i guess they will run on a Pilatus like system where it is govered to a certain target RPM. Looks cool though.

Chicks dig winglets.
User currently offlineMD-90 From United States of America, joined Jan 2000, 8530 posts, RR: 11
Reply 2, posted (15 years 5 months 3 weeks 2 days 14 hours ago) and read 2165 times:

The Zoche diesel that makes 300 HP has been in development for some time. Zoche apparently doesn't want to release it until he think's it's perfect. It can run on Jet A or Jet B. It weighs somewhat less than a standard IO-540 or IO-550. It's not turbocharged. Sounds great, but it'll be an uncertified engine (at least at first).

The other is French. They're planning on putting it in some Socatas. I don't know much about it. It will be certified.

The big things about diesels are that they last a long time between overhauls and that kerosene costs a lot less than avgas and it's garanteed to be around 50 years from now.

User currently offlineL-188 From United States of America, joined Jul 1999, 30414 posts, RR: 57
Reply 3, posted (15 years 5 months 3 weeks 2 days 8 hours ago) and read 2131 times:

One problem that diesel aircraft engines is that the specification for Jet Fuel does not contain a pectane specification. So the Actual pectane rating for a gallon of Jet A could be all over the place, depending on where you buy your fuel.

What is a pectane specification? Pectane is the readiness of the fuel to ignight. So it is pretty much the opposite of the Octane rating that we are all pretty familiar with. Octane being the fuels resistane to lighting off.

Funny isn't it? Everybody think high octane means really explosive stuff. But the higher the octane number the more stable it is.

This is of course very important for a diesel since the engine is compression ignited. The rule is that the higher the pectane number the easier the fuel is to light off. As a general rule diesel fuel in the US has a very low pectane number with Europe and Japan higher. That is why Diesel engines in those countries generally don't make that clank clank sound you associate with Diesel trucks in the U.S.

Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Development Of Carlisle Airport posted Sat Nov 25 2006 17:54:52 by CKT789
How To Find Owner/lessor Of An Aircraft? posted Wed Nov 15 2006 00:30:08 by Australia1
Chances Of An Aircraft Losing Control On Depature posted Thu Oct 12 2006 07:21:06 by SpeedBird203
Getting A Used Aircraft Engine For A School? posted Wed Oct 11 2006 17:38:55 by Falstaff
What Type Of BA Aircraft Was Diverted To Halifax? posted Wed Sep 27 2006 15:06:36 by Bmacleod
Question For Pilots Of Different Aircraft posted Tue Sep 19 2006 07:02:09 by QXatFAT
Last Of Ansett Aircraft Scrapped posted Sun Aug 20 2006 14:02:02 by Melpax
Frequency Of Delta's Aircraft Per Concourse At ATL posted Mon Aug 7 2006 22:38:27 by 1337Delta764
Help With Specs Of A Preserved Aircraft posted Mon Jul 3 2006 08:12:22 by CYEGsTankers
What Was The Tail Number Of My Aircraft? posted Fri Jun 9 2006 18:16:10 by Sapporo