2006 = Rules

23Aug05 Update

2006=20 Rules and Vehicle Design
Rules = Posting:=20 15=20 Aug 2005
Entry = Deadline:=20 31 Oct 2005
The contest = rules may=20 be augmented/supplemented at any time during the competition.
During = the=20 period from the rules posting up to the entry deadline the FAQ will be = used to=20 document any changes.
Following the entry deadline changes will be = e-mailed=20 to each teams contact e-mail address.
Questions may be submitted at = any time,=20 answers will be provided ONLY as outlined above.

Summary:

The AIAA through the Applied Aerodynamics, = Aircraft=20 Design, Design Engineering and Flight Test Technical Committees and the = AIAA=20 Foundation invites all university students to participate in the = Cessna/ONR Student Design/Build/Fly=20 Competition. The = contest=20 will provide a real-world aircraft design experience for engineering = students by=20 giving them the opportunity to validate their analytic studies.

Student teams will design, fabricate, and=20 demonstrate the flight capabilities of an unmanned, electric powered, = radio=20 controlled aircraft that can best meet the specified mission profile. = The goal=20 is a balanced design possessing good demonstrated flight handling = qualities and=20 practical and affordable manufacturing requirements while providing a = high=20 vehicle performance.

To encourage innovation and maintain a = fresh design=20 challenge for each new year, the design requirements and performance = objectives=20 will be updated for each new contest year. The changes will provide new = design=20 requirements and opportunities, while allowing for application of = technology=20 developed by the teams from prior years.

Check the rules package carefully as = items and=20 approaches that were legal in past years may not be legal for this = contest=20 year. Only the contents of this Rules package, the 2006 FAQ, and = 2006=20 Q&A documents hold bearing on the requirements and/or allowances for = the=20 current contest year. It is the responsibility of the = teams to=20 know and follow all provided rules, the FAQ, and all contest day = briefings.

Questions may be addressed to the contest = director=20 as outline in the communications section below.

Cash prizes are $2500 = for=20 1^st, $1500 for 2^nd and $1000 for 3^rd=20 place. The winning team will be invited to present their design at = an AIAA=20 conference hosted by the sponsoring technical committees.

Judging:

Students must design, document, fabricate, = and=20 demonstrate the aircraft they determine to be capable of achieving the = highest=20 score on the specified mission profile(s). Flight scores will be based = on the=20 demonstrated mission performance obtained during the contest.

Each team must also submit a written = Design Report.=20 A maximum of 100 points will be awarded for the team design report. = Scores for=20 the written reports will be announced at the beginning of the = fly-off.

Each aircraft will have computed a Rated = Aircraft=20 Cost, reflecting the complexity/technology of the design.

The overall team score is a combination of = the=20 Design Report, Rated Aircraft Cost and Flight scores. The team with the = highest=20 overall team score will be declared the winner.

Scores will be FINAL 7 working days after = the=20 completion of the contest. This period will allow for review of = the scores=20 in a timely fashion following the contest.

All submitted reports are the property of = AIAA,=20 Cessna and ONR and may be published or reproduced at their discretion. =

Contest Site:

Host for the competition = will be the=20 Cessna Aircraft Company. The fly-off is planned to be held at their = facilities=20 in Wichita,=20 KS. You can check on weather = historical=20 conditions at www.weatherbase.com or www.weatherunderground.com.

Team Requirements:

All team members (except for non-student = pilots)=20 must be full time students at an accredited University or College and = student=20 members of the AIAA. At least 1/3 of the team members must consist of = Freshman,=20 Sophomores or Juniors. The pilot must be an AMA=20 (Academy of = Model=20 Aeronautics) member. Teams may use a = non-university=20 member for the pilot if desired. We will also provide qualified pilots = on the=20 contest day for any teams who are unable to have their pilot attend.

Past Year Reports:

The top scoring report from the past = year=92s=20 competition will be available for reference on the contest web site. The = team=20 with the top scoring report from this year=92s contest will be required = to submit=20 an electronic copy of their report following the competition, which will = be=20 placed on the contest web site for the next year=92s competition.

Sponsorship:

Teams may solicit and accept sponsorship = in the form=20 of funds or materials and components from commercial organizations. All = design, analysis and=20 fabrication of the contest entry is the sole = responsibility of the=20 student team members.

Schedule:

A completed electronic entry must be RECEIVED by the contest administrator on or = before=20 31 October = 2005.

The entry form for the DBF is different = from the=20 ones used for all other AIAA student competitions. The DBF entry = form is a=20 MS-Word file and can be found on the contest web site. It must be = submitted by=20 e-mail to the contest administrator at greg.page@nrl.navy.mil . Be = sure to=20 include the Phone and FAX number for your team advisor and at least one = student=20 contact so we may reach you in case of any last minute problems or=20 changes. All teams are required to provide two point-of-contact = e-mail=20 addresses with their contest application, one of which must be the teams = advisor. It is the teams responsibility to make sure the = e-mail=20 contact addresses they supply remain active during the entire period = from entry=20 to the close of the competition, as e-mail will be the primary means to = provide=20 information and updates.

Please Note: The Entry Name may not be changed once the = form is=20 submitted, but must be retained and used on all reports and=20 correspondence during the competition year.

Written reports (5=20 hard copies, electronic reports will not be accepted), = must ARRIVE at the Chief of Scoring address by 5 = pm local=20 time on 7 March 2006. = Reports will=20 be judged =93as received=94, no =93corrections/additions/page changes=94 = will be made by=20 the organizers so check your reports carefully before sending them.

(A note primarily for foreign entrants = but also=20 allowed for domestic teams. If sending the report by courier is=20 prohibitive you may send it electronically to a commercial = printer=20 (KINKO=92s comes to mind) local to the report submission address and = have them=20 print/collate and DELIVER the reports to meet the deadline. No = deadline=20 exceptions will be made, but this may be easier than international = courier=20 service.)

The contest is scheduled for 21-23 April 2006. = The=20 competition will run from Noon to=20 5PM on Friday, and = 8AM to 5PM on Saturday and Sunday. Final = awards will=20 be presented at the end of Sunday's competition. All teams should plan = their=20 travel so that they may stay for the awards presentations on Sunday.

Please note that tech inspections will be = available=20 on Friday 21 April. All teams = are=20 encouraged to be prepared to have your plane inspected on Friday. = Inspections=20 will also be available on Saturday, but waiting until Saturday to go = through=20 tech may mean that your team will miss one or more rounds through the = flight=20 queue. If we have a full turnout you may not be able to get in a full = set of=20 scoring flights unless you are "ready to fly" at every opportunity.

Late entries will NOT be = accepted. Late=20 or incomplete report submissions will NOT be judged. Teams who do = not=20 submit the required written reports will NOT be allowed to = fly. It=20 is the team=92s responsibility to assure that all deadlines are met, as = they will=20 be strictly enforced.

Communications:

The contest administration will maintain a = World=20 Wide Web site containing the latest information regarding the contest = schedules,=20 rules, and participating teams. The contest web site will also contain a = list of=20 potential suppliers for materials and equipment available to build an = entry. The=20 contest web site is located at:

http://www.ae.uiuc.edu/aiaadbf

Questions regarding the contest, = schedules, or rules=20 interpretation may be sent to the contest administrator by e-mail = at:

greg.page@nrl.navy.mil

Questions received prior to the official = entry=20 submission date will not be answered directly. Select questions = =93may=94 be=20 answered in the FAQ prior to the entry submission date. Official = questions=20 and answers received following the entry submission date will be = provided by=20 e-mail to all teams of record.

Written reports (only) should be sent to = the Chief=20 of Scoring at:

AIAA = Design/Build/Fly=20 Contest/Report Judging
Mr. David Levy
Cessna Aircraft = Company
5701 East=20 Pawnee MS-PAW
Wichita, KS 67218
316-831-2014

Aircraft Requirements -=20 General

The = aircraft may be=20 of any configuration except rotary wing or lighter-than-air.=20
No structure/components may be dropped = from the=20 aircraft during flight.=20
No=20 form of externally assisted take-off is allowed. All energy = for=20 take-off must come from the on-board propulsion battery = pack(s).=20
Must be = propeller=20 driven and electric powered with an unmodified over-the-counter = model=20 electric motor. May use multiple motors and/or propellers. May be = direct=20 drive or with gear or belt reduction.=20
Motors = may be any=20 commercial brush or brushless electric motor.=20
For = safety, each=20 aircraft will use a commercially produced propeller/blades. = Must use a=20 commercially available propeller hub/pitch mechanism. Teams = may modify=20 the propeller diameter by clipping the tip, and may paint the blades = to=20 balance the propeller. No other modifications to the propeller = are=20 allowed. Commercial ducted fan units are allowed.=20
Motors = and=20 batteries will be limited to a maximum of 40 Amp current draw by = means of a=20 40 Amp fuse (per motor or battery pack) in the line from the = positive=20 battery terminal to the motor controller. Only ATO or blade style = plastic=20 fuses may be used. (e.g. "Maxi" size Slow Blow, 1.15"x0.85". = Available=20 online www.Mcmaster.com part #7460K51 $1.66 each)=20
Must use = over the=20 counter NiCad or NiMH batteries. For safety, battery packs must have = shrink-wrap or other protection over all electrical contact points. = The=20 individual cells must be commercially available, and the = manufacturers label=20 must be readable (i.e. clear shrink wrap preferred). All battery = disconnects=20 must be "fully insulated" style connectors.=20
Maximum propulsion battery = pack weight=20 is 3 lb. This battery pack must power propulsion = systems only.=20 Radio Rx and servos MUST be on a separate battery pack. = Batteries may=20 not be changed or charged between sorties during a flight period.=20
Aircraft = and pilot=20 must be AMA legal. This means that the aircraft TOGW (take-off gross = weight=20 with payload) must be less than 55-lb, and the pilot must be a = member of the=20 AMA.=20
Since = this is an=20 AMA sanctioned event, the team must submit proof that the aircraft = has been=20 flown prior to the contest date (in flight photo) to the technical=20 inspection team. Contest supplied qualified pilots will be available = to=20 teams who require them. =

Aircraft Requirements -=20 Safety

All vehicles will undergo a safety = inspection by a=20 designated contest safety inspector prior to being allowed to make any=20 competition or non-competition (i.e. practice) flight. All decisions of = the=20 safety inspector are final. Safety inspections will include the = following as a=20 minimum.

Physical = inspection=20 of vehicle to insure structural integrity.

Verify = all=20 components adequately secured to vehicle. Verify all fasteners = tight and=20 have either safety wire, locktite (fluid) or nylock nuts. Clevises = on=20 flight controls must have an appropriate safety device to prevent = their=20 disengaging in flight.=20
Verify = propeller=20 structural and attachment integrity.=20
Visual = inspection=20 of all electronic wiring to assure adequate wire gauges and = connectors in=20 use.=20
Radio = range=20 check, motor off and motor on.=20
Verify = all=20 controls move in the proper sense.=20
Check = general=20 integrity of the payload system.

Structural=20 verification. All aircraft will be lifted with one lift point at = each wing=20 tip to verify adequate wing strength (this is "roughly" equivalent = to a 2.5g=20 load case) and to check for vehicle cg location. Both upright and inverted wing lift tests will = be=20 performed. Teams must mark the expected empty and = loaded cg=20 locations on the exterior of the aircraft. Special provisions will = be made=20 at the time of the contest for aircraft whose cg does not fall = within the=20 wing tip chord. This test will be made with the aircraft filled to = its=20 maximum payload capacity.=20
Radio = fail-safe=20 check. All aircraft radios must have a fail-safe mode that is = automatically=20 selected during loss of transmit signal. The fail-safe will be = demonstrated=20 on the ground by switching off the transmit radio. During fail safe = the=20 aircraft receiver must select:

Throttle closed
Full up elevator =
Full=20 right rudder
Full right (or left) aileron
Full Flaps down (if so = equipped)

The radio Fail Safe provisions = will be=20 strictly enforced.

All = aircraft must=20 have a mechanical motor arming system separate from the onboard = radio Rx=20 switch. This MUST be the contest = specified=20 "blade" style fuse. This device must be located so it is accessible = by a=20 crewmember standing ahead of the propeller(s) for = pusher=20 aircraft, and standing behind the propeller(s) for = tractor=20 aircraft (i.e. the crew member must not reach across the propeller = plane to=20 access the fuse). The "Safety Arming Device" will be in "Safe" mode = for all=20 payload changes. The aircraft Rx should always be powered on and the = throttle verified to be "closed" before activating the motor arming=20 switch. Fuses MUST be accessible from outside the aircraft and = act as=20 the "safeing" device.

Note: The aircraft must be =93safed=94 = (arming fuse=20 removed) any time the aircraft is being manually moved, or while=20 loading/unloading payload during the mission. The arming fuse = must be=20 removed anytime the aircraft is in the hanger area.

Mission Profile:

Teams must complete the flight missions as = outlined=20 in the mission matrix below. Teams will have a maximum of 5 flight attempts. A flight attempt = is=20 defined as advancing the throttle =93stick=94 for take-off, or going = past the 2=20 minute preparation time. The best Single Flight Score from = each of=20 2 different mission types will be summed for the team's=20 Total Flight Score.

In the event that, due to time or = facility=20 limitations, it is not possible to allow all teams to have the maximum = number of=20 flight attempts, the contest committee reserves the right to ration = and/or=20 schedule flights. The exact determination of how to ration flights will = be made=20 on the contest day based on the number of entries, weather, and field=20 conditions.

Each team's overall score will be computed = from=20 their Written Report Score, Total Flight Score, and = the=20 Rated Aircraft Cost using the formula:

SCORE =3D Written = Report Score *=20 Total Flight Score
Rated Aircraft Cost

Mission Task Matrix

Mission

Description

General Mission Information

=B7 =20 Aircraft must fit into a 4 foot x 2 foot x 1-1/4 = foot=20 internal dimension box.

=B7 =20 Aircraft must be designed and be physically capable = of=20 supporting all specified missions even if it is the intent or = practice of=20 the team to fly only one or two of the missions during the = contest.

=B7 =20 Cargo must be securely restrained in the aircraft by = mechanical means. Tape and Velcro are not allowed = restraining=20 methods.

=B7 =20 Payloads may not be carried in external pods.

=B7 =20 Speed Loaders may be used but may not be loaded = until the=20 ground crew is directed to start the payload loading/unloading = operation=20 (ie. They can not be pre-loaded while the aircraft is in the air = on a=20 prior lap).

=B7 =20 On all flight laps the aircraft must complete at = least one=20 360^o turn in the opposite direction of the flight = pattern.

=B7 =20 Take-off distance is 100 ft wheels off the = runway. For=20 each take-off of a multi-sortie mission the aircraft may be = returned to=20 the start line for each new take-off, or may start from it=92s = present=20 location providing that location is =93past=94 the take-off line. = In either=20 case the maximum take-off distance allowance will be MEASURED from = the=20 start line.

=B7 =20 Note: There is no timed-repair of damage allowed in = this=20 year=92s competition.

=B7 =20 Maximum mission time is 10 minutes.

Cargo = Flexibility

DF =3D 10.0

=B7 =20 Aircraft must be capable of carrying all of the = three=20 standard payloads:

48=20 loose tennis balls. Tennis balls are 2.5-2.625=94 diameter and = 57-58g.=20
Two=20 2-Liter soda bottles full of water=20
A=20 single large rectangular wood block no larger than = 4=94x4=94x24=94 weighing=20 not more than 8 lbs

The = contest=20 administration will supply the payload items to be flown so all = teams will=20 be using the same payloads.

=B7 =20 Special =93inserts=94 may be used to aid in securing = the cargo,=20 but must be installed/removed as part of the team cargo handling=20 time. Payloads may not be installed into the cargo handler = until the=20 designated =93Loading_Time=94.

=B7 =20 The =93Loading_Time=94 will be the cumulative = loading/unloading=20 time (in minutes), flight time is not included.

=B7 =20 =93Loading_Time=94 for each lap starts when the team = is cleared=20 to go and get the payload and begin loading and ends when the = prior=20 payload is returned to the staging area and the aircraft is = secured and=20 begins the take-off roll. On the final lap =93Loading = Time=94 begins=20 when the aircraft stops moving and ends when the last payload is = removed=20 and returned to the staging area.

=B7 =20 For partial missions there will be = a 3=20 minute penalty for each payload not flown. Payloads must be flown in = the order=20 specified.

=B7 =20 Mission=20 Profile:

Select=20 and load payload #1 (tennis balls). Fly one lap of course = and=20 land.=20
Remove=20 payload #1 and return it to the staging area. Select and = load=20 payload #2 (soda bottles). Fly one lap of course and land. =
Remove=20 payload #2 and return it to the staging area. Select and = load=20 payload #3 (wood block). Fly one lap of course and land.=20
Remove=20 payload #3 and return it to the staging area.

=B7 =20 Single Flight Score is:

SCORE =3D DF * = #Laps/Loading_Time

Minimum = RAC

DF =3D 150

=B7 =20 Aircraft must carry 96 loose tennis balls for a = minimum=20 flight (air) time of 2 minutes. Tennis balls are 2.5-2.625=94 = diameter and=20 57-58g.

The = contest=20 administration will supply the payload items to be flown so all = teams will=20 be using the same payloads.

=B7 =20 You may carry all of the balls on a single flight if = desired, or you may make multiple flights each with fewer = balls.

=B7 =20 There is no score if you do not successfully fly all = of the=20 required payload.

=B7 =20 Mission Profile:

Load=20 any amount of tennis balls into aircraft. Take off and fly = as many=20 laps of the course as required to have an =93in air=94 time of = greater than=20 2 minutes, then land.=20
Remove=20 the =93flown=94 tennis balls, reload with additional tennis = balls.=20
Repeat=20 as required until all 96 tennis balls have been flown. =

=B7 =20 Single Flight Score is:

SCORE =3D=20 DF/RAC

Incremental=20 Payload

DF=3D = 1.25

=B7 =20 Aircraft will fly as many laps as the team = determines=20 possible. On each lap the payload to be carried will be=20 increased.

=B7 =20 Mission Profile:

Load=20 2 x 2-Liter soda bottles filled with water.=20 Take off and fly one lap of the course and land.=20
Load=20 an additional 2-Liter soda bottle filled with water. Take = off and=20 fly one lap of the course and land.=20
Load=20 an additional 2-Liter soda bottle filled with water. Take = off and=20 fly one lap of the course and land.=20
Load=20 an additional 2-Liter soda bottle filled with water. Take = off and=20 fly one lap of the course and land.

=B7 =20 Single Flight Score is:

SCORE =3D DF * = #Laps x=20 #Laps

Aircraft that run off the runway before = reaching the=20 start line may be returned to the runway to taxi back to the line or may = be=20 carried to the line by the ground crew as determined by the requirements = of the=20 specific mission.

Aircraft Cost = Model:

Rated = Aircraft Cost=20 (RAC) =3D MEW

Coef.

Description

Value

MEW

Manufacturers Empty Weight

Actual airframe weight [lb] WITH all flight and = propulsion=20 batteries but without any = payload.

General Mission Specification and=20 Notes:

=B7 =20 Aircraft are to remain assembled while waiting in the = queue. =20 Teams will install the propulsion batteries once reaching the 3^rd =93On Deck=94 position = (i.e. when the=20 aircraft is 3^rd in the queue, the team must begin to install = the=20 batteries).

=B7 =20 Aircraft may not have = any work=20 performed in the starting line queue, other than as specified above at = the=20 3^rd On Deck position. Aircraft propulsion batteries may be = left out=20 of the aircraft when in line.

=B7 =20 Aircraft batteries may be charged while the aircraft is in = the=20 queue IF AND ONLY IF the batteries are = removed=20 from the aircraft.

=B7 = The=20 aircraft propulsion system(s) must be disarmed or "safed" during any = time when=20 crew members are preparing the aircraft.

=B7 =20 Maximum flight support crew is: pilot, observer, and 3 = ground=20 crew. Only the designated ground crew may reload the aircraft payload . = Pilot=20 and observer may be members of the ground crew, provided total ground = crew size=20 remains 3 people.

=B7 =20 Observer and all ground crew must be students. Only the pilot may be a non-student.

=B7 = The=20 upwind turn will be made after passing the upwind pylon. The downwind = turn will=20 be made after passing the downwind pylon. Upwind and downwind pylons = will be 500=20 ft from the starting line. Aircraft must be "straight and level" when = passing=20 the pylon before initiating the turn.

=B7 =20 Aircraft must land on the paved portion of the runway. = Aircraft=20 may "run-off" the runway during roll-out.

=B7 =20 After landing, aircraft may taxi=20 back to the starting line. Alternatively, aircraft may be carried back = to the=20 starting line; however, the team may not leave the pit area to retrieve = the=20 aircraft until the aircraft has come to a complete stop, and they are = signaled=20 it is "Ok" to retrieve the aircraft by the flight line judge. = Aircraft=20 experiencing significant damage = during=20 landing will be considered to have completed their flight where they = come to=20 rest and may not be =93carried=94 to the starting line to =93complete=94 = a lap. =20 Determination of =93significant =96vs- = non-critical=94 damage=20 will be made by the flight line judges. Aircraft with = =93significant=94 damage=20 will not receive a score for that flight. Aircraft with = =93non-critical=94=20 damage may continue to the disassembly task with no = penalty.

=B7 =20 Flight altitude must be sufficient for safe terrain = clearance and=20 low enough to maintain good visual contact with the aircraft. Decisions = on safe=20 flight altitude will be at the discretion of the flight line judges and = all=20 rulings will be final.

Additional information is included in the = FAQ = (Frequently Asked=20 Questions).

Protest Procedures

Submitting a protest is a serious matter = and will be=20 treated as such. Teams may submit a protest to the Contest = Administration at any=20 time during the competition. Protests must be submitted in writing = and=20 signed by the team advisor, designees are not allowed for protest=20 submissions. If the team advisor is not present, he may FAX a = signed=20 protest to the team for them to present. Protests may be = posted for=20 review at the decision of the administration.

Protests and penalties (up to = disqualification from=20 the contest for deliberate attempts to misinform officials, violate the = contest=20 rules, or safety infractions) will be decided by the Contest = Administration. The=20 decision of the Contest Administration is final.

Design Report:

Each team will submit a judged design = report as=20 outlined below. The submission date is contained in the schedule section = of this=20 document.

Reports must be bound. Simple spiral = bindings=20 are sufficient and preferred; 3-ring binders are not allowed. = Paper clips=20 or clamps are NOT sufficient. Unbound reports will not be = scored. =20 Stapled reports are discouraged and will be penalized 10 points. = Report=20 paper may be no larger than 8 =BD inches wide by 11 inches long = with the=20 exception of the drawing package. A4 paper may be used ONLY if it = is cut=20 to a maximum length of 11 inches. The drawing package may be on 11 = inch=20 long x maximum of 17 inch wide pages. A = 10 point=20 penalty will be given for the use of oversize paper.

Absolute maximum page count for the report = is=20 60 pages, inclusive of all = pages of any=20 type, printed or blank, including the front and back covers. Reports exceeding the maximum page count will be = given a 10=20 point penalty for each additional page.

All reports should be = at=20 least one and one half line spacing, 10-pt Arial font. Tables and = figures=20 will also be at least 10-pt Arial font. Margins should be at = least=20 1 inch on all sides. All figures and tables should be clear and readable = for the=20 judges. The reports will be judged on format and readability.

Reports will be scored on a 100 point = basis=20 following the guidelines outlined below. All information used for = scoring=20 must be in the outlined sections, content that is out of sequence, = including the=20 drawing package, will be treated as missing and scored accordingly.

Report scores will not be available prior = to the=20 contest weekend.

Please note that the judges will be using = this same=20 report outline for evaluating reports. ALL items listed will be = expected=20 to be present, easy to locate and identify, and be well documented in = the report=20 for a maximum score.

Please do not ship = reports packed in=20 =93packing peanuts=94. The scoring judge must redistribute the = reports to up=20 to 40 individual judges for review so please keep your packaging = recyclable and=20 as compact as possible.

Report scoring is based on the reports = AS=20 SUBMITTED. Final proofing of the report printed copies (ALL) = prior to=20 submission is STRONGLY encouraged.

Design Report

All = sections will be=20 weighted for format, completeness and readability

1. =20 Executive Summary: (5 points):
Provide a summary of the = development of your design. This should be a narrative description = highlighting=20 the major areas in the development process for your final configuration = and a=20 broad description of the range of design alternatives investigated.

2. =20 Management Summary (5 points):
Describe the = organization of the=20 design team. Provide a chart of design personnel and assignment areas. = Include a=20 (single) milestone chart showing planned and actual timing of major = elements of=20 the design process, including as a minimum the conceptual design stage,=20 preliminary design stage, detailed design stage, flight testing and = report=20 preparation periods.

3. =20 Conceptual Design (20 points):
Describe the key = elements of the=20 mission requirements (problem statement). Document the alternative = configuration concepts (e.g. biplane, canard, flying wing, pusher -Vs = tractor,=20 number of engines etc.) investigated during the conceptual design stage = and the=20 reason why each concept was considered. Describe and document the = numerical=20 figures of merit (FOM's) used to screen competing concepts, and the = mission=20 feature each FOM was selected to support. Rated Aircraft = Cost (RAC) MUST be one of the = FOM=92s used=20 during the screening process, teams should generate a sufficiently = accurate RAC=20 estimate to differentiate between design concepts. Numerical data = need not=20 be extensive at this stage, but should include as a minimum: a final = ranking=20 chart giving the quantitative value of each design for each FOM.

4. =20 Preliminary Design (30 points):
Document the design = parameter=20 and sizing trades investigated during the preliminary design stage, and = why each=20 was felt to be important to the mission. Describe the analysis methods = used.=20 Describe the mission model used and the predicted performance. Provide = estimates=20 of the aircraft lift, drag and stability characteristics. Document = the=20 design optimization and trade studies conducted and their results.

5. =20 Detail Design (15 points for discussion items, 10 points = for=20 drawing package, 25 points total for the section):
Document component = selection and systems architecture selection. Include your final = competition=20 aircraft's Rated Aircraft Cost using the contest supplied = cost=20 model. RAC table should include all input parameter, intermediate = and=20 final computation.

Include a table giving data for the sized=20 aircraft. The table should include;
Geometry: length, span, = height,=20 wing area, Aspect Ratio, control volumes
Performance: CL max, L/D = max,=20 maximum Rate of Climb, stall speed, maximum speed, take-off field length = (two=20 sets, empty and gross weight)
Weight and Balance Statement (airframe, = propulsion system, control system, payload system, payload, empty = weight, gross=20 weight, Center of Gravity)
Systems (radio used, servos used, battery=20 configuration used, motor used, propeller (nominal), gear ratio (if = used))

The Drawing Package will be included = with this=20 section and must contain drawings of the design in sufficient detail to = indicate=20 aircraft size and configuration; primary structure component size and = location;=20 payload size, location and restraint method; and location of propulsion = and=20 flight control system components.

6. =20 Manufacturing Plan and processes (5 points):
Document = the=20 process selected for manufacture of major components and assemblies of = the final=20 design. Detail the manufacturing processes investigated, and describe = the FOM's=20 used (including but not limited to: availability, required skill levels = and=20 cost) to screen competing concepts. Describe the analytic methods (cost, = skill=20 matrix, scheduling time lines) used to select the final set of = manufacturing=20 processes. Include a manufacturing milestone chart showing scheduled = event=20 timings.

7. =20 Testing Plan (10 points):
Detail testing objectives, = schedules,=20 check-lists, results and any lessons learned for component and full = aircraft=20 testing, both static and dynamic (ie. in flight). Realistic test = schedules=20 and expectations, ability to measure any key mission/design = parameters.

[AIAA Student = Design/Build/Fly=20 Competition homepage] [AIAA = Homepage]=20