ASTM F2245-04

Standard Specification for Design and Performance of a Light Sport Airplane

SCOPE
1.1 This specification covers airworthiness requirements for the design of powered fixed wing light sport aircraft, an "airplane."
1.2 This specification is applicable to the design of a light sport aircraft/airplane as defined by regulations and limited to day VFR flight.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

General Information

• Status: Historical
• Publication Date: 30-Apr-2004
• ICS: 49.020 - Aircraft and space vehicles in general
• Technical Committee: F37 - Light Sport Aircraft
• Drafting Committee: F37.20 - Airplane

Relations

• Replaced By: ASTM F2245-06 - Standard Specification for Design and Performance of a Light Sport Airplane
• Effective Date: 15-Oct-2006
• Referred By: ASTM F2483-18e1 - Standard Practice for Maintenance and the Development of Maintenance Manuals for Light Sport Aircraft
• Effective Date: 01-May-2004
• Referred By: ASTM F2745-15(2023) - Standard Specification for Required Product Information to be Provided with an Airplane
• Effective Date: 01-May-2004
• Referred By: ASTM F3298-19 - Standard Specification for Design, Construction, and Verification of Lightweight Unmanned Aircraft Systems (UAS)
• Effective Date: 01-May-2004
• Referred By: ASTM F2930-16e1 - Standard Guide for Compliance with Light Sport Aircraft Standards
• Effective Date: 01-May-2004
• Referred By: ASTM F3409-19e1 - Standard Practice for Simplified Aircraft Loads Determination
• Effective Date: 01-May-2004
• Referred By: ASTM F2840-14(2023) - Standard Practice for Design and Manufacture of Electric Propulsion Units for Light Sport Aircraft
• Effective Date: 01-May-2004
• Referred By: ASTM F2746-14(2023) - Standard Specification for Pilot’s Operating Handbook (POH) for Light Sport Airplane
• Effective Date: 01-May-2004
• Referred By: ASTM F3035-22 - Standard Practice for Production Acceptance in the Manufacture of a Fixed Wing Light Sport Aircraft
• Effective Date: 01-May-2004
• Referred By: ASTM F3060-20 - Standard Terminology for Aircraft
• Effective Date: 01-May-2004
• Referred By: ASTM F2507-15 - Standard Specification for Recreational Airpark Design
• Effective Date: 01-May-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F 2245 – 04
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope ballast, full engine coolant and oil, hydraulic fluid, and the
unusable fuel. Hence, the maximum empty weight equals
1.1 This specification covers airworthiness requirements for
maximumtakeoffweightminusminimumusefulload:W =W
E
the design of powered fixed wing light sport aircraft, an
− W .
“airplane.” U
3.1.3 minimum useful load, W (lb)—where W = W − W .
U U E
1.2 This specification is applicable to the design of a light
3.2 Abbreviations:
sport aircraft/airplane as defined by regulations and limited to
2
3.2.1 AR—aspect ratio = b S
day VFR flight.
/
3.2.2 b—wing span, (ft)
1.3 This standard does not purport to address all of the
3.2.3 BHP—brake horse power
safety concerns, if any, associated with its use. It is the
3.2.4 c—chord, (ft)
responsibility of the user of this standard to establish appro-
3.2.5 CAS—calibrated air speed, (fps, kts, mph)
priate safety and health practices and determine the applica-
3.2.6 C —lift coefficient of the airplane
bility of regulatory requirements prior to use. L
3.2.7 C —drag coefficient of the airplane
D
2. Referenced Documents
3.2.8 CG—center of gravity
2
3.2.9 C —moment coefficient (C is with respect to c/4
2.1 ASTM Standards:
m m
point, positive nose up)
F2316 Specification for Airframe Emergency Parachutes
3.2.10 C —zero lift moment coefficient
for Light Sport Aircraft
MO
3.2.11 C —normal coefficient
F2339 Practice for Design and Manufacture of Reciprocat- n
3.2.12 FPM—feet per minute
ing Spark Ignition Engines for Light Sport Aircraft
2
3
3.2.13 g—acceleration as a result of gravity = 32.2 ft/s
2.2 Federal Aviation Regulations:
3.2.14 IAS—indicated air speed (fps, kts, mph)
FAR-33 Airworthiness Standards: Aircraft Engines
4
3.2.15 ICAO—International Civil Aviation Organization
2.3 Joint Aviation Requirements:
3.2.16 LSA—light sport aircraft
JAR-E Engines
3.2.17 MAC—mean aerodynamic chord
JAR-22 Sailplanes and Powered Sailplanes
3.2.18 n—load factor
3. Terminology
3.2.19 n —airplane positive maneuvering limit load factor
1
3.2.20 n —airplane negative maneuvering limit load factor
3.1 Definitions:
2
3.2.21 n —load factor on wheels
3.1.1 flaps—any movable high lift device.
3
3.2.22 POH—Pilot Operating Handbook
3.1.2 maximum empty weight, W (lb)—largest empty
E
2
2
weightoftheairplane,includingalloperationalequipmentthat 3.2.23 q—dynamic pressure= V 19.77 5 V 391
~ !
/ /
2
is installed in the airplane: weight of the airframe, powerplant,
lb/ft , when V is in mph
2
required equipment, optional and specific equipment, fixed 3.2.24 S—wing area (ft )
3.2.25 V—airspeed (mph)
3.2.26 V —design maneuvering speed
A
1
This specification is under the jurisdiction of ASTM Committee F37 on Light
3.2.27 V —design cruising speed
C
SportAircraft and is the direct responsibility of Subcommittee F37.20 onAirplane.
3.2.28 V —design diving speed
D
Current edition approved May 1, 2004. Published August 2004.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 3.2.29 V —demonstrated flight diving speed (V # V )
DF DF D
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3.2.30 V —design flap speed
F
Standards volume information, refer to the standard’s Document Summary page on
3.2.31 V —maximum flap extended speed
FE
the ASTM website.
3
3.2.32 V —maximum speed in level flight with maximum
Available from Federal Aviation Administration, 800 Independence Ave. SW, H
Washington, DC 20591. continuous power (corrected for sea level standard conditions)
4
Available from Global Engineering Documents, 15 Inverness Way, East
3.2.33 V —never exceed speed (V # V # 0.9V )
NE H NE DF
Englewood, CO 80112-5704
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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F2245–04
3.2.34 V —stallingspeedorminimumsteadyflightspeedat 4.3.1 Maximum RPM shall not be exceeded with full
S
which the airplane is controllable (flaps retracted) throttle during takeoff, climb, or flight at 0.9V , and 110%
H
maximum continuous RPM shall not be exceeded during a
3.2.35 V —stalling speed or minimum steady flight speed
S1
glide at V with throttle closed.
with the flaps in a specific configuration
NE
4.4 Performance, General—All performance requirements
3.2.36 V —stalling speed or minimum steady flight speed
S0
apply in standard ICAO atmosphere in still air conditions an
...