ASTM F2245-07a

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: F 2245 – 07a
Standard Specification for
1
Design and Performance of a Light Sport Airplane
This standard is issued under the fixed designation F2245; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope unusable fuel. Hence, the maximum empty weight equals
maximumtakeoffweightminusminimumusefulload:W =W
1.1 Thisspecificationcoversairworthinessrequirementsfor E
− W .
U
the design of powered fixed wing light sport aircraft, an
3.1.3 minimum useful load, W (N)—where W = W − W .
“airplane.” U U E
3.1.4 night—hoursbetweentheendofeveningciviltwilight
1.2 This specification is applicable to the design of a light
and the beginning of morning civil twilight.
sport aircraft/airplane as defined by regulations and limited to
3.1.4.1 Discussion—Civiltwilightendsintheeveningwhen
VFR flight.
the center of the sun’s disc is 6 degrees below the horizon, and
1.3 This standard does not purport to address all of the
begins in the morning when the center of the sun’s disc is 6
safety concerns, if any, associated with its use. It is the
degrees below the horizon.
responsibility of the user of this standard to establish appro-
3.2 Abbreviations:
priate safety and health practices and determine the applica-
2
3.2.1 AR—aspect ratio = b S
bility of regulatory requirements prior to use.
/
3.2.2 b—wing span, (m)
2. Referenced Documents
3.2.3 c—chord, (m)
2
3.2.4 CAS—calibrated air speed, (m/s, kts)
2.1 ASTM Standards:
3.2.5 C —lift coefficient of the airplane
F2316 Specification for Airframe Emergency Parachutes L
3.2.6 C —drag coefficient of the airplane
for Light Sport Aircraft
D
3.2.7 CG—center of gravity
F2339 Practice for Design and Manufacture of Reciprocat-
3.2.8 C —moment coefficient (C is with respect to c/4
ing Spark Ignition Engines for Light Sport Aircraft
m m
3
point, positive nose up)
2.2 Federal Aviation Regulations:
3.2.9 C —zero lift moment coefficient
FAR-33 Airworthiness Standards: Aircraft Engines MO
4
3.2.10 C —normal coefficient
2.3 Joint Aviation Requirements:
n
2
3.2.11 g—acceleration as a result of gravity = 9.81 m/s
JAR-E Engines
3.2.12 IAS—indicated air speed (m/s, kts)
JAR-22 Sailplanes and Powered Sailplanes
3.2.13 ICAO—International Civil Aviation Organization
3. Terminology
3.2.14 LSA—light sport aircraft
3.2.15 MAC—mean aerodynamic chord (m)
3.1 Definitions:
3.2.16 n—load factor
3.1.1 flaps—any movable high lift device.
3.2.17 n —airplane positive maneuvering limit load factor
3.1.2 maximum empty weight, W (N)—largest empty
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E
3.2.18 n —airplane negative maneuvering limit load factor
weightoftheairplane,includingalloperationalequipmentthat
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3.2.19 n —load factor on wheels
is installed in the airplane: weight of the airframe, powerplant,
3
3.2.20 P—power, (kW)
required equipment, optional and specific equipment, fixed
3
3.2.21 r—air density (kg/m )=1.225 at sea level standard
ballast, full engine coolant and oil, hydraulic fluid, and the
conditions
3.2.22 POH—Pilot Operating Handbook
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This specification is under the jurisdiction of ASTM Committee F37 on Light
2 2
3.2.23 q—dynamic pressure (N/m)= 1 2rV
/
SportAircraft and is the direct responsibility of Subcommittee F37.20 onAirplane.
3.2.24 RC—climb rate (m/s)
Current edition approved Dec. 15, 2007. Published January 2008. Originally
2
approved in 2004. Last previous edition approved in 2007 as F2245–07.
3.2.25 S—wing area (m )
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.2.26 V—airspeed (m/s, kts)
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.2.27 V —design maneuvering speed
A
Standards volume information, refer to the standard’s Document Summary page on
3.2.28 V —design cruising speed
the ASTM website.
C
3
Available from Federal Aviation Administration (FAA), 800 Independence
3.2.29 V —design diving speed
D
Ave., SW, Washington, DC 20591, http://www.faa.gov.
3.2.30 V —demonstrated flight diving speed (V # V )
4
DF DF D
Available from Global Engineering Documents, 15 Inverness Way, East
Englewood, CO 80112-5704, http://global.ihs.com.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F 2245 – 07a
3.2.31 V —design flap speed 4.3 Propeller Speed and Pitch Limits—Propeller configura-
F
3.2.32 V —maximum flap extended speed tion shall not allow the engine to exceed safe operating limits
FE
established by the engine manufacturer under normal condi-
3.2.33 V —maximum speed in level flight with maximum
H
tions.
continuous power (corrected for sea level standard condi
...