Cozy MKIV - Tenth Flight Test Protocol

Tenth Flight Plan - Climb / Accelerated Stalls:

Takeoff:	Standard
Level:	1200 ft.
Throttle:	2000 RPM or to 120 mph
Radio:	Fitchburg traffic, Experimental N83M(ike)Z(ulu) maneuvering west of Fitchburg

This table is representative of the data collection for ALL climb tests. "PA1" and "PA2" are the pressure altitude limits (Kollsman window set to 29.92 in. Hg) for each climb block - the "Diff" is 1000 ft. for each. "Mid" is the mid-point altitude, at which the "OAT" (in deg. F) is taken. The "DA" is the density altitude of the midpoint, based on the "OAT". "Vt" is the True Airspeed, based on the "DA" and the indicated Airspeed, "Vi". The "Time" is the measured time (in seconds) to climb from "PA1" to "PA2", and "ROC" is the calculated Rate of Climb based on that time. The "FPA" is the flight path angle (in degrees) for that altitude block.

The only two measured columns are the "OAT" and the "Time" - the rest are either defined or calculated. "Time" is measured on the way up, and "OAT" is measured on the way down at the midpoint altitude. I stabilize at this altitude for one minute before taking the measurement.

Vi	80	mph		Start Weight	1640	lb.		End Weight	1625	lbs.

PA1	PA2	Diff	Mid	OAT	DA	Vt	Time	ROC	FPA	Remarks
1500	2500	1000	2000	53.5	2123	83	46	1304	10.2
3000	4000	1000	3500	57.1	4203	87	47	1277	9.6
4500	5500	1000	5000	55.2	5923	89	52	1154	8.4
6000	7000	1000	6500	54	7685	92	57	1053	7.4
7500	8500	1000	8000	50.4	9294	95	64	938	6.4

I generate a table like this for airspeeds from 80 mph to 130 mph, at weights and CG's as defined in Tenth Flight Test.

It usually takes two or three flights to run through the six indicated speeds at each CG/Weight level. On the first flight at each level, I stabilize at 3500 ft. pressure altitude on the way down and perform stall/accelerated stall tests. This table is representative of the data collected.

Bank Angle (degrees)	Airspeed (mph)
0	64
15	66
30	74
45	80
60	85

All Climb/Stall data will be reduced and graphed after the flights are complete.

Throttle:	2000 RPM - descend to pattern altitude
Land:	Per checklist

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