N2O. Purely academic discussion

[Guitarmaster]

As I sat, mind wandering one evening, I wonder what would be the effects of metered nitrous injection on airplane engines.  

It seems to be, since N2O is inert but increases the oxygen content, this would be a nice alternative to a turbo, at least for climb to altitude.

Thoughts?

[bonal]

Been watching Street Outlaws have you? N2O has real potential to burn holes in pistons if metering not exactly right O2 a lot different than pressurized air.  But lets have some real fun with some CH3NO2

[Yetti]

Heat management is already an issue in climb with currently available oxygen...  How about an inline fuel chiller

[63C]

Yes burn holes in pistons and tips off spark plugs (be there done that) if not metered precisely with an additional fuel source and timing retarded accordingly. Probably frowned upon by the crash investigators...LOL 

[N201MKTurbo]

Nitrous adds extra oxygen to the fuel charge. You need to add more fuel to keep the mixture correct. 

This is all academic with respect to our Mooneys unless you want to register it as experimental.

It would help at higher altitudes, but it would be expensive. A tank would only last a few minuets at most. How much is that stuff?

[jclemens]

The Reno Air Race guys have been doing that for years.  It works, but it's dangerous.  Just like in cars.  

[N201MKTurbo]

So, I looked at the race car blogs. For a 50 hp boost on a 350 Cu in engine, a 10 lb bottle will last about 3 minuets. That will cost you $35

[Hank]

Just now, N201MKTurbo said:

So, I looked at the race car blogs. For a 50 hp boost on a 350 Cu in engine, a 10 lb bottle will last about 3 minuets. That will cost you $35

Wow, 3+ lb/min, that's 200 lb/hr. Including a tank big enough to carry it, that's a lotta fuel (or pax / cargo) to offload. Wonder what the extra fuel burn is? Should leave me about 250 pounds UL with me, it and full fuel, but I bet I won't go near 5-1/2 hours or 800 nm.

[N201MKTurbo]

Yea, $700/hr for 50 hp.

might as well go fly my friends T33

[DonMuncy]

Just now, N201MKTurbo said:

Yea, $700/hr for 50 hp.

And remember that is on a 350 cu inch engine. On your engine it would be substantially less. But it should last substantially longer.

[N201MKTurbo]

Just now, DonMuncy said:

And remember that is on a 350 cu inch engine. On your engine it would be substantially less. But it should last substantially longer.

My engine is a 360 cu in engine, that's pretty close.

[DonMuncy]

Oops, my brain switched back to foreign cars, and wrongly concluded 360 was in liters. Must you guys continually point out my errors  

[carusoam]

No replacement for dis...

To get an extra 100 hp, go IO550.  Lasts for 2,000 hours.  Call the plane a missile.

to get the same extra 100 hp at altitude, add a pair of snails.  Call it an acclaim.

to really improve the take off distance and climb rate remove the interior niceties.  Call it an Eagle.

Nitrous and high compression ratio pistons, go experimental.

Mooneys are cool!

Best regards,

-a-

 

[RLCarter]

Water injection would be cheaper than N2O, but staying on the "Spray" using either during climb out would sling parts.....lot-o-parts.

[Guitarmaster]

So, I looked at the race car blogs. For a 50 hp boost on a 350 Cu in engine, a 10 lb bottle will last about 3 minuets. That will cost you $35

Ouch!

Sent from my XT1254 using Tapatalk

[Guitarmaster]

The Reno Air Race guys have been doing that for years.  It works, but it's dangerous.  Just like in cars.  

I didn't know the Reno guys used it. Cool.

Sent from my XT1254 using Tapatalk

[jclemens]

Some of them even use it that are not allowed to.  There are tales of tubular structures being sealed up and used to store hidden giggle gas in the T6 class.

[mooniac15u]

14 hours ago, N201MKTurbo said:

So, I looked at the race car blogs. For a 50 hp boost on a 350 Cu in engine, a 10 lb bottle will last about 3 minuets. That will cost you $35

I think this is how @Marauder plans to beat @201er in the F vs J race.

[N601RX]

I think I remember reading the Germans used it during WW2.

[N201MKTurbo]

https://en.m.wikipedia.org/wiki/GM-1

here it is....

[mooniac15u]

The U.S. was working on it too. 

http://naca.central.cranfield.ac.uk/reports/1945/naca-wr-e-199.pdf

[Marauder]

19 hours ago, mooniac15u said:

I think this is how @Marauder plans to beat @201er in the F vs J race.

Actually all I need to do to beat Stinky Pant's J is to offload one of the girls and have another one shift her weight back a little to give me a little more aft CG. I think throwing a donut in the baggage compartment might help.

[Danb]

20 hours ago, mooniac15u said:

I think this is how @Marauder plans to beat @201er in the F vs J race.

It's actually how marauder gets his sweetie pies airborn, gotta love those full airplane chutes if ones grossly over gross. Weight not appearance

 

[rbridges]

My brother used to spray nitrous at the track. I figure a 150 shot would knock 2-3 seconds off the mooney's quarter mile time. 

[DXB]

On May 20, 2016 at 9:18 AM, Marauder said:

Actually all I need to do to beat Stinky Pant's J is to offload one of the girls and have another one shift her weight back a little to give me a little more aft CG. I think throwing a donut in the baggage compartment might help.

Would not recommend- Seems like a cheap speed mod until you add up the grocery bill.