F
F
L
L
I
I
G
G
H
H
T
T
T
T
R
R
A
A
I
I
N
N
I
I
N
N
G
G
S
S
U
U
P
P
P
P
L
L
E
E
M
M
E
E
N
N
T
T
for SPORT
STAR
Light Sport Aircraft
Document No.: S2006FTSUS Revision: -
Date of Issue: 15/01/2006
Page:
114/130
4.19 Spins
WARNING!
AEROBATICS as well as INTENTIONAL SPINS are prohibited!
The SPORTSTAR design is based on very light airplane called EV-97 VLA
HARMONY (type certified according to JAR-VLA) and ultralight airplane
EV-97 EUROSTAR (type certified e.g. according to UL-2, BfU, BCAR S
and further regulations).
Both these types have been spin tested – Harmony against JAR-VLA 221
requirements and Eurostar against BCAR S 221. Spinning. The spin
requirements of both regulations are identical:
(a) The airplane must be able to recover from a one turn spin or a 3 second
spin, whichever takes longer, in not more than one additional turn, with the
controls used in the manner normally used for recovery. In addition -
(1) For both the flaps-retracted and flaps-extended conditions, the
applicable airspeed limit and positive limit maneuvering load factor may not
be exceeded;
(2) There may be no excessive back pressure during the spin or recovery;
and
(3) It must be impossible to obtain uncontrollable spins with any use of the
controls. For the flaps-extended condition, the flaps may be retracted
during recovery.
Both the EV-97 Eurostar and EV-97 VLA Harmony, which were the design
basis for the Sportstar, demonstrated very good spin characteristics. At
forward C.ofG. the airplanes did not enter into a spin but into a spiral, at aft
C.ofG. spinning was possible. To recover from the spin, it was enough to
move the stick to the neutral position and both models immediately
recovered from the spin. Full opposite rudder was not necessary. Although
the Sportstar has a slightly longer wing span and wider tilting canopy than
above mentioned and spin tested models, good spin characteristics may be
anticipated because the Sportstar has the same very stall characteristics as
both these models and the same C.of G. range.
