| From: | "Michael A. Kauffman" <mak9@******.EDU> |
|---|---|
| Subject: | Re: Turbo of long ago! and more! |
| Date: | Thu, 22 Apr 1993 19:06:38 EDT |
>>>Joe chooses a 100kW IC engine as his starting point. This engine has a mass
>>>of 316 kg and a size of 316 ESU. [These calculated values may be in error. I
>>>do not have a calculator handy.] If he choses to add one level of TB.
>>>power = base power * 1.1 or 110kW
>>>mass = base mass * 1.2 or 379kg
>>>size doesn't change
>>>signature = base signature
> Wait a minute! Where did you get these figures? What the hell is a kW? I
>know you mean kiloWatt, but I don't remember ever using that here. Going off
>a 300 ESU engine, I get.
> Power = (300)^2 * 1.1 = 99,000 PU
> Mass = 300 * 1.2 = 360 kg
> Sig = 2 - 1/2 = 2
I'm just using Watts as our power unit. That may engine is 100kW or 100,000 W
base. The square root of 100,000 is 316 which by our equations is the mass of
the engine. Your examples work fine also.
In further explaination, when I original posted equation envolving power,
I (along with a few others) used Watts and Kw's. There was some objection to
this. Why? I'm still not sure. Our units correlate nicely to Watts and the
use of Watts would add some pretense of reality to our system. So I propose
we do go back and start using Watts as our power unit.
Also do we want to deal with "high performance engines"? If we do how about
the following proposal?
power = base power * 2 (that is + 100%)
mass = base mass * 2 (+ 100%)
sig = base sig - 1
as in RBB one could NOT customise a HP-engine.
I think I can justify the increase in mass in this case. In order to be more
effinient the engines must run hotter. This increase in heat would dammage
the polymers use in normal engines. In order to avoid this damage polymers of
higher density and in some cases even metals must be used. This doesn't even
take into account the changes in the cooling system and other sytems that may
be affected.
the last paragraph is just my opinion. Any other ideas out there?
anyway an example of a tubrocharged HP engine is as follows:
Turbocharging level 2 HP IC engine (100,000 W, 316 kg base)
power = 100,000 * 2.2 ( 1 for base, 1 for HP , .2 for two levels TB) = 220,000W
mass = 316 * 2.4 (1 for base, 1 for HP, .4 for TB) = 758kg
sig = base sig - 2 (1 for HP, 1 for TB) = 0
Next project (for me anyway) = body/armor increases
More comments please.
Mike Kauffman
AKA Amonchare
