Re: Light-Sport Aircraft Yahoo group RE: So much for Cessna

DJ,

Here is the source I used for the weight of gasoline.

<http://www.ask.com/question/how-much-does-a-gallon-of-gasoline-weigh>

R. Williams



---------- Original Message -----------
From: DJfawcett26@aol.com
To: Sport_Aircraft@yahoogroups.com
Sent: Fri, 14 Feb 2014 17:49:50 -0500 (EST)
Subject: Re: Light-Sport Aircraft Yahoo group RE: So much for Cessna

> For clarification, avgas is 6 lb per gallon. Useful load is defined
> as gross weight minus empty weight. That being said, you need to
> recalculated your numbers. More importantly, the LSA class was and is
> not intended to support folks that are 300 lb plus (almost 25% of the
> gross weight for 1 person!). You need to look at Part 23 aircraft.
>
> The Skycatcher can support 2-200 lb folks plus 12 gallons of gas.
> Given the class, that is not all that bad.
>
> As for the unrecoverable spin being the result of being tail heavy,
> that was not the case. The spin was being conducted in the aft
> range of the cg. The failure of spin recovery was to due to
> inadequate rudder authority, which was corrected on subsequent
> aircraft - i.e. - added ventral and rudder area.
>
> Best Regards,
>
> Dave
>
> In a message dated 2/14/2014 2:53:57 P.M. Mountain Standard Time,
> rkwill@lewiscounty.com writes:
>
> The max TO weight is 1340 pounds
> the empty weight of the standard model is 843 pounds
> The fuel capacity is 24 gal * 6.25 pounds is ~150 pounds
> so useful load is 347 pounds.
>
> Most people, now a days, are 200-250 pounds.
> I.E. there is not enough payload for two typical people.
> And with my 310 pounds, there is 37 pounds for the instructor.
>
> Unfortunately, Cessna seems to be using the 'standard individual
> weight of a male adult person, as defined by the FnAA Rather than
> the reality.
>
> I'm not familiar with the CG range, but very likely, a full payload
> (347 pounds + full fuel would result in a tail heavy condition.
> (remember the testing where the test pilot could not get the plane
> out of a spin because it is too tail heavy?
------- End of Original Message -------



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