UAS Challenge

 

UAS Challenge - Your questions answered

FAQs 2025

Airframes: Ready-made or made for the competition

Question: Are we allowed to use ready-made frames/structures for our unmanned aircraft or do we make it from scratch? 

Answer: The UAS airframe and physical control systems shall be designed from scratch, and not based upon commercially available kits or systems.’’ The airframe and control systems design should be your own and not a copy of a commercial UAS. We are looking for innovative ideas.

COTS Budget

Question: The COTS products budget is set at £1300. I am aware this includes off the shelf components such as motors and batteries etc. Does this also include all material and manufacturing costs too? Is the cost of either the sandwich panel itself or the associated manufacturing costs included in this COTS budget?

Answer: The rules state that the guideline maximum value of COTS is £1,300; it is not a limit but we are looking for the best value for money (competitiveness) of the UAS. COTS, in this context, is for bought-in finished components, e.g. motors, batteries, servos, control boards, etc., (see T2.4.3 of the rules). Any expenditure above the £1,300 needs to be justified. You are not limited to what you spend on materials but you do need to consider whether an aid agency will be able to afford your UAS for delivering the humanitarian aid. We will be judging your business case from your Business Presentation. You also need to consider the environmental impact of the materials that you are using

Deliverable documents: Structure and content of deliverable documents

Question: Section D specifies the structure and content of the deliverable documents: is this mandatory or guidance on how to cover the subject matter?

Answer: The content specified in Section D for all documents are mandatory. Failure to follow these requirements may result in the document being declared ineligible.

Electrical power system – energy source

Question: Is it permissible to use power sources other than Li-Po batteries e.g. hydrogen fuel cells?

Answer: No, only Li-Po batteries may be used as stated in T3.1.

Electrical power system – removable link

Question: If we have a two-engine design does it need to be one isolator, or can a two-engine design run on separate circuits with one for each engine?

Answer: The requirement for the external removable link is for the safety of the operator and so that the Scrutineers and Flight Safety Officer can see that the aircraft is in a safe to handle state. A single link disabling power to all motors and positioned as specified in T3.2 See also the whole aircraft isolation link requirement in T3.2.

Design Changes

Question: Once the concept paper is submitted, how much is our design allowed deviate from it In case we encounter problems?

Answer: You may make detail changes to your design at any stage as your design evolves and as testing raises issues. You must list any significant changes with an explanation of why they have become necessary in your next document release. These changes should also feature in your Design Review meetings.

Funding: Backup components

Question: If we acquire backup components for the build that may not be used in the final system during the flight missions, should we include it in the budget/ cost declaration?

Answer: No, you need not declare backup components in your cost budget but you may want to mention that you have taken the precaution of buying some as a risk mitigation.

Flight demonstration: PPE requirement

Question: Could you please provide a full list of all PPE that the team will require to be compliant with your risk assessment?

Answer: All members involved in the launch and recovery of the UA are required to wear safety glasses. Other PPE requirements will vary for each team, depending on what tooling will be used at the event, therefore, no specification will be provided by the IMechE; if we did it would state “all PPE required for the tasks to be performed”.

Teams should be advised to consult the Health and Safety Executive (HSE) guidance for PPE at work and demonstrate to the IMechE that they have selected suitable PPE for the maintenance/manufacturing tasks they will be performing, as part of their own Safety Assessment/Risk Assessment. Appropriate use of PPE will be monitored at the Demonstration Event.

Funding: Declaring sponsor's assistance/costs

Question: We have a sponsor who will be helping us fabricate our frame. If we have to, how do we declare the costs associated with this?

Answer: You need to clearly state what work your sponsor is doing for you. Please take particular note of the words in sections 5.3 and T2.4 of the Rules.

The idea of the competition is that this should be your own airframe and control system design and aside from off-the-shelf components, e.g. autopilots, batteries, motors, etc. should largely be manufactured and assembled by yourselves.

If it is a specialised component/assembly from your sponsor then it should be included in the COTS budget. If the sponsor is helping with specialised manufacturing equipment then it need not but should be acknowledged.

Funding: Financial assistance/grants

Question: Is it possible for the Institution of Mechanical Engineers to help our team financially in order to cut down costs?

Answer: The Institution is not able to sponsor any UAS Challenge teams directly, but you are eligible to apply for a Group Project Award.

Team composition: Original team membership numbers

Question: If we want to add an additional member to the team (giving more than 8 people + supervisor) is this possible?

Answer: Team attendance at the Demonstration Event is currently limited to no more than 8 members per team, plus your Academic Lead or Team Supervisor. This is because of the expected number of teams and the logistics constraints at the BMFA Buckminster site. We will communicate any changes to teams as/when we are able

Team composition: Team supervisor

Question: Can this just be anyone, for instance, someone from the team, or does this have to be someone more official, such as a university lecturer?

Answer: The team supervisor should be a university staff member or a professionally registered engineer (A5.2).

Clarification on Pilot licenses 4.6.1

All flying at the competition event itself will be conducted by the event Safety Pilots and the Flight Safety Officer. The team’s pilot will not fly your UAS at BMFA Buckminster. In terms of your own Pre-Demonstration event practice and testing, teams need to comply with their local Aviation Authority regulations. In the UK that is the Civil Aviation Authority and the UK Air Navigation Orders for safe and lawful flying.

In summary UK teams must ensure the following:

  1. That they or the University hold an Operator ID form the UK CAA and that said number is displayed correctly on their aircraft.
  2. That any person flying the aircraft meets the competency requirements set out by the UK CAA, which is typically the Flyer ID element.
  3. That any flights are only performed under UK CAA regulations, i.e. that they fly safely and lawfully. As they are likely to be flying aircraft near 10kg, this will mean they are likely to be flying in the A3 Open Category.

There is no official need legally for insurance unless any flights are considered ‘commercial’, however the IMechE do require that teams use insurance, for which the British Model Flying Association can help (www.bmfa.org).  

A quick start guide on regulations can be found here: https://rcc.bmfa.uk/quick-start-guide-to-model-flying-operation-of-unmanned-aircraft

Commercial flying is often considered a flight performed for payment or reward, but if the pilot is a paid member of staff, that also makes it a commercial flight.

International teams:

International teams will need to comply with their relevant Aviation Authority regulations, which may differ to those in the UK

X Plane

Question: What version of X Plane do we use?

Answer: Please use X Plane version 11, which is available for free at https://www.x-plane.com/desktop/try-it/older/

Get in touch

Have a question? Would like to get involved?

Join the conversation

facebook_40_t Twitter Google Photos flickr instagram 



Challenge Sponsors and Partners

Working in collaboration with