# FSAE Rule 2024-chassis goup
[toc]

## overview
參與FSAE賽事的車輛必須符合SAE制定的規則，與底盤直接相關的規則主要有V、T、D三大類，其他部分也會有一些與底盤相關的規則，建議是整本看完，可以從[這裡](https://fsaeonline.com/cdsweb/gen/DocumentResources.aspx) 下載

## 簡介
### GR
通用規則，主要在講競賽精神、參賽資格和繳交文件等細項，像是做出來三年的車輛不得參加FSAE競賽等，比較需要注意的是有提到後續規則書的用詞定義

**重點:**
GR.6.1 Definition of Terms
==• Must - designates a requirement==
==• Must NOT - designates a prohibition or restriction==
==• Should - gives an expectation==
==• May - gives permission, not a requirement and not a recommendation==
GR.6.2 Capitalized Terms
Items or areas which have specific definitions or are covered by specific rules are capitalized.
For example, “Rules Questions” or “Primary Structure”
GR.6.3 Headings
The article, section and paragraph headings in these rules are provided only to facilitate reading: they do not affect the paragraph contents.
GR.6.4 Applicability
GR.6.4.1 Unless otherwise specified, all rules apply to all vehicles at all times
GR.6.4.2 Rules specific to vehicles based on their powertrain will be specified as such in the rule text:
• Internal Combustion “IC” or “IC Only”
==• Electric Vehicle “EV” or “EV Only”==

### AD
通用規則，主要在講網站資源與個人參賽資格等細項
**重點**
AD.1.3 Official Languages
The official language of the Formula SAE series is English.
Document submissions, presentations and discussions in English are acceptable at all
competitions in the series.
AD.2 OFFICIAL INFORMATION SOURCES
The following websites are referenced in these rules. Refer to the websites for additional
information and resources.
AD.2.1 Event Website
==The Event Website for Formula SAE is specific to each competition, refer to:==
==https://www.sae.org/attend/student-events==
AD.2.2 FSAE Online Website
==The FSAE Online website is at: http://fsaeonline.com/==
AD.2.2.1 Documents, forms, and information are accessed from the “Series Resources” link
AD.2.2.2 Each registered team must have an account on the FSAE Online Website.
AD.2.2.3 Each team must have one or more persons as Team Captain. The Team Captain must accept
Team Members.
AD.2.2.4 Only persons designated Team Members or Team Captains are able to upload documents to
the website.
AD.2.3 Contacts
Contact [e-mail] with any problems/comments/concerns
Consult the specific website for the other competitions requirements.
### DR
通用規則，主要在講文件繳交規定細則

**重點**

### V
車輛規則，規定軸距或轉向形式等細項，底盤組須詳讀
### F
車體結構規則，詳細約束了車架的設計原則，有一些定義其他系統也會用到

**重點**
F.1.10 Primary Structure
The combination of the following components:
• Front Bulkhead and Front Bulkhead Support
• Front Hoop, Main Hoop, Roll Hoop Braces and Supports
• Side Impact Structure
• (EV Only) Tractive System Protection and Rear Impact Protection
• Any Frame Members, guides, or supports that transfer load from the Driver Restraint
System
F.1.11 Primary Structure Envelope
A volume enclosed by multiple tangent planes, each of which follows the exact outline of the
Primary Structure Frame Members
F.1.12 Major Structure
The portion of the Chassis that lies inside the Primary Structure Envelope, excluding the Main Hoop Bracing and the portion of the Main Hoop above a horizontal plane located at the top of the Upper Side Impact Member or top of the Side Impact Zone.
F.5.6.5 Driver Template
A two dimensional template used to represent the 95th percentile male is made to these
dimensions (see figure below):
• A circle of diameter 200 mm will represent the hips and buttocks.
• A circle of diameter 200 mm will represent the shoulder/cervical region.
• A circle of diameter 300 mm will represent the head (with helmet).
• A straight line measuring 490 mm will connect the centers of the two 200 mm circles.
• A straight line measuring 280 mm will connect the centers of the upper 200 mm circle
and the 300 mm head circle.
F.5.6.6 Driver Template Position
The Driver Template will be positioned as follows:
• The seat will be adjusted to the rearmost position
• The pedals will be put in the most forward position
• The bottom 200 mm circle will be put on the seat bottom where the distance between
the center of this circle and the rearmost face of the pedals is no less than 915 mm
• The middle 200 mm circle, representing the shoulders, will be positioned on the seat
back
• The upper 300 mm circle will be positioned no more than 25 mm away from the head
restraint (where the driver’s helmet would normally be located while driving)

### T
技術規則，主要是模板規格和各系統的基本技術要求，像是煞車系統的具體要求，其中會摻雜一些其他組別相關的規則，像是油門訊號要求等，這些在與其他組合作時相當重要，建議全部熟讀，尤其是T.8

### VE
主要是車輛與車手的周邊配備要求
### IC
油車專用，可略過
### EV
電車專用，電力系統規則，如果有設計到需要電力驅動的配備時建議來此查詢是否有相關規定
### IN
技術檢驗規則，建議是讀過一遍，雖然底盤會被強制要求的檢驗很少但還是有一些與底盤相關，像是煞車測試等
**重點**
IN.14.2 After Inspection Approval
IN.14.2.1 The vehicle must maintain all required specifications (including but not limited to ride height, suspension travel, braking capacity (pad material/composition), sound level and wing location)throughout the competition.
IN.14.2.2 Changes to fit the vehicle to different drivers are allowed. Permitted changes are:
• Adjustment of the driver restraint system, Head Restraint, seat and pedal assembly
• Substitution of the Head Restraint or seat insert
• Adjustment of mirrors
IN.14.2.3 Once the vehicle receives Inspection Approval, the ONLY modifications permitted to the vehicle are:
• Adjustment of belts, chains and clutches
• Adjustment of brake bias
• Adjustment to engine / powertrain operating parameters, including fuel mixture and
ignition timing, and any software calibration changes
• Adjustment of the suspension
• Changing springs, sway bars and shims in the suspension
• Adjustment of Tire Pressure, subject to V.4.3.4
• Adjustment of wing or wing element(s) angle, but not the location T.7.1
• Replenishment of fluids
• Replacement of worn tires or brake pads. Replacement tires and brake pads must be
identical in material/composition/size to those presented and approved at Technical
Inspection.
• Changing of wheels and tires for weather conditions D.6
• Recharging Low Voltage batteries
• Recharging High Voltage Accumulators
IN.14.3 Repairs or Changes After Inspection Approval
The Inspection Approval may be voided for any reason including, but not limited to:
a. Damage to the vehicle IN.13.1.3
b. Changes beyond those allowed per IN.14.2 above

### S
靜態競賽項目規則，主要講述設計報告與成本報告等如何計分，建議是讀過一遍，才會知道報告怎麼寫

### D
動態競賽項目規則，主要講述skidpad與autocross等動態項目如何計分，並介紹大概賽道layout
**重點**
D.9.1 Acceleration Layout
D.9.1.1 Course length will be 75 m from starting line to finish line
D.9.1.2 Course width will be minimum 4.9 m wide as measured between the inner edges of the bases of the course edge cones
D.9.1.3 Cones are placed along the course edges at intervals, approximately 6 m
D.9.1.4 Cone locations are not marked on the pavement
D.10 SKIDPAD EVENT
The Skidpad event measures the vehicle cornering ability on a flat surface while making a
constant radius turn.
D.10.1 Skidpad Layout
D.10.1.1 Course Design
• Two pairs of concentric circles in a figure of eight pattern
• Centers of the circles 18.25 m apart
• Inner circles 15.25 m in diameter
• Outer circles 21.25 m in diameter
• Driving path the 3.0 m wide path between the inner and outer circles
D.10.1.2 Cone Placement
a. Sixteen (16) pylons will be placed around the inside of each inner circle and thirteen (13)
pylons will be positioned around the outside of each outer circle in the pattern shown in
the Skidpad layout diagram.
b. Each circle will be marked with a chalk line, inside the inner circle and outside the outer
circle
The Skidpad layout diagram shows the circles for cone placement, not for course marking.
Chalk lines are marked on the opposite side of the cones, outside the driving path
c. Additional pylons will establish the entry and exit gates.
d. A cone may be placed in the middle of the exit gate until the finish lap.
D.10.1.3 Course Operation
a. Vehicles will enter and exit through gates on a 3.0 m wide path that is tangential to the
circles where they meet.
b. The line between the centers of the circles defines the start/stop line.
c. A lap is defined as traveling around one of the circles from the start/stop line and
returning to the start/stop line
D.11.1.1 The Autocross course will be designed with the following specifications. Average speeds
should be 40 km/hr to 48 km/hr
a. Straights: No longer than 60 m with hairpins at both ends
b. Straights: No longer than 45 m with wide turns on the ends
c. Constant Turns: 23 m to 45 m diameter
d. Hairpin Turns: 9 m minimum outside diameter (of the turn)
e. Slaloms: Cones in a straight line with 7.62 m to 12.19 m spacing
f. Miscellaneous: Chicanes, multiple turns, decreasing radius turns, etc.
g. Minimum track width: 3.5 m
h. Length of each run should be approximately 0.80 km
D.11.1.2 The Autocross course specifications may deviate from the above to accommodate event site
requirements.
D.12.2.1 The Endurance event will consist of multiple laps over a closed course to a total distance of
approximately 22 km.
D.12.2.2 The Endurance course will be designed with the following specifications. Average speed
should be 48 km/hr to 57 km/hr with top speeds of approximately 105 km/hr.
a. Straights: No longer than 77 m with hairpins at both ends
b. Straights: No longer than 61 m with wide turns on the ends
c. Constant Turns: 30 m to 54 m diameter
d. Hairpin Turns: 9 m minimum outside diameter (of the turn)
e. Slaloms: Cones in a straight line with 9 m to 15 m spacing
f. Miscellaneous: Chicanes, multiple turns, decreasing radius turns, etc.
g. Minimum track width: 4.5 m
h. Designated passing zones at several locations
D.12.2.3 The Endurance course specifications may deviate from the above to accommodate event site
requirements.

## 檢驗熟悉程度
可以試回答以下問題檢測自己對規則理解是否熟悉

1. (V)請填入下圖缺失的尺寸的規定下限
* wheelbase
* track rear
* wheel size

2. (V)下圖為使用桿端軸承來將A臂連結至車架的範例,請判斷其是否合規,如不合規,請更改設計並解釋原因

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3. (V)方向盤轉動時，規則允許的空行程(free play)為?

4. (V)wheel travel是什麼?而在規則內wheel travel的最小值是多少?

5. (T)CF(Critical Fasteners)的定義是甚麼?
6. (T)轉向機柱支架和轉向機的相對位置會受甚麼模板影響?

7. (T)煞車踏板的材質必須是?必須能承受多少N的力?
8. (T)煞車系統哪部分的緊固件必須使用CF?
9. (T)油門踏板的復位機制必須使用甚麼達成?
10. (D)Acceleration項目總行駛距離為?
11. (D)Skidpad的內圈半徑為?
12. (D)Autocross最小彎道外徑為