MRE-FB wrote:

Paul,

We at MISTRAL Engines have to finalize our choice of an engine model

designator.  We studied the prevailing system, as developed...over time I
presume... by C

and L.  We believe it is unsuited to properly and efficiently describe a

rotary engine.  I'd be surprised if you disagreed.  On the other hand,
people will be

unfamiliar and initially puzzled and lost with our proposed new system.

Do you think that such a possible confusion might be detrimental to us?  But
we think

that if we want to change a few things in aviation, we might as well

start there!

We propose the following system as described by our turbo model proposed

designator:  TSG-2230-A1B

TS:  Turbo-Supercharged... nothing if normally aspirated

G:  Gasoline fueled,  K as in kerosene for a future Jet-fueled engine

(if we use J, than we'd create a confusion between G and J in French and
some other

languages)

2:  first digit = number of rotors

230:  last 3 digits=  power output in BHP

A:  first model developed in a series.  For example, we may go to B when

we replace the 13B block by a RENESIS block if we ever do it...

1:  identifies a major configuration option.  For example:  1 for the

backplate configured for a dynafocal mount, 2 for a bed mount...

B:  denotes minor changes in engine or accessory configuration (1 or 2

alternators, alternators of different power or manufacturer, etc)

Makes sense to you?  Any suggestion?

Thanks for the help,

Francois Badoux

Paul Carey wrote:

Paul

The standard prefixes already in piston engines for aviation is:

GTIR-80-A1B

G = Geared
T = Turbocharged
I = Injected
R = Rotary [or radial]
80 = cubic capacity of the engine
A1B = the configuration of the engine, including HP, Fuel Type, Accessories
etc as per a spec sheet. One spec sheet per aircraft installation.
An A1B might be 230hp for the RV-4, an A2B might be a 200hp for the Eagle
etc.

A supercharged 3 rotor would be:
GSIR-120-A1B

Everyone already in aviation would understand this.

Regards

PC

Good idea.
I second that motion Francois. It has been that way for 60 years.
Adds credibility to the engine.

Paul Lamar
 
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