LIVP PERFORMANCE

The performance spread sheet we developed for the phase one testing of our 280 HP  IO550 G LIV was modified to include the 310 HP, TSIO 550 G. Following are some results for the effect of speed and weight on climb performance and the effect of weight on cruise performance. This TSIO spread sheet should give a good indication of the relative effects of weight and IAS. However the absolute values of ROC and TAS apply only to our Four.  Absolute values for other Fours would require model tweaking based on a few test results.

 

FIG 1      WEIGHT HAS A BIG EFFECT ON BEST RATE OF CLIMB

FIG 2      THE PENALITY FOR EXCESSIVE CLIMB SPEED INCREASES WITH ALTITUDE

 

 

TABLE 1 CLIMB SEA-LEVEL TO 10000, 16000 AND 22000 FT ISA AT 2500 RPM AND 3600 LBS
% PWR*	MAP IN	KIAS	MIXTURE	TO 10000 FT		TO 16000 FT		T0 22000 FT
				MIN	GAL	MIN	GAL	MIN	GAL
85	30.5	135	BEST POWER	11.8	3.8	20.0	6.4	29.4	9.3
90	34 WOT	135	FULL RICH	10.3	4.9	17.1	8.0	25.1	11.2
85	30.5	165	BEST POWER	17.2	5.6	31.8	10.2	62.1	19.5

FULL RICH AND WIDE OPEN THROTTLE (WOT) PROVIDES MINIMUM CLIMB TIMES AND CLOSE TO MINIMUM FUEL BURN.

TABLE 2 CRUISE AT 3600 LBS, 75% PWR*, 28.5” MAP, 2400 RPM
ISA ALT FT	BHP	BEST POWER GPH	KTAS	NM/GAL
10000	229	16.9	210	12.4
16000	224	16.5	219	13.3
22000	217	16.0	226	14.1

 

 

 

 

SPEED AND RANGE IMPROVE WITH ALTITUDE AND WEIGHT REDUCTION

TABLR 3 CRUISE AT 75% PWR*, 16000 FT, 28.5” MAP, 2400 RPM, 224 BHP, BP (16.5 GPH)
WEIGHT LB	10000 FT, 16.9 GPH		16000 FT, 16.5 GPH		22000 FT, 16.0 GPH
	KTAS	NM/GAL	KTAS	NM/GAL	KTAS	NM/GAL
2800	218	12.9	228	13.8	238	14.9
3200	214	12.7	224	13.6	232	14.5
3600	210	12.4	219	13.3	226	14.1

 

 

 

 

·         Sea level power