Can we use the Halo structure for our E-HPV design ?

[Saam 4]

Hello, I just want to ask question regarding the e-HPVC (e-Human Powered Vehicle Challenge).

Are we allowed to use the Halo structure similar to the one used in F1 formula cars to our E-human powered vehicle?

One of the requirements for the rollover protection system is it "The RPS must be primarily a continuous hoop or truss, capable of withstanding all forces throughout a plausible rollover crash sequence"

So does the halo structure align with the design requirements?

Kind regards, saam A,

[Ankur Singh]

Hi Saam,

The RPS needs to fulfill the requirements mentioned in the rulebook. These requirements include (not an exhaustive list)-

1. The RPS must be a continous loop around the rider

2. The RPS must provide rigid structure for seat belt mounting

3. The RPS must satisfy the top and side loading conditions.

4. The RPS must extend above the rider's head (with helmet)

Any design which fulfills these criterias will be allowed to participate in the event.

The teams are also encouraged to add additional safety features that further improve upon the safety of the vehicle.

Ankur Singh

Chair eHPVC 

[Saam 4]

I can argue the Halo structure might meet all the requirements, but I'm not so sure about requirement 1 and 4, because the halo kind of looks like a continuous loop around the rider, and it does extend above the rider's head.

1. The RPS must be a continous loop around the rider

2. The RPS must provide rigid structure for seat belt mounting

3. The RPS must satisfy the top and side loading conditions.

4. The RPS must extend above the rider's head (with helmet)

Or does it have to be modified to be something like this ??

[Saam 4]

I can argue the Halo structure might meet all the requirements, but I'm not so sure about requirement 1 and 4, because the halo kind of looks like a continuous loop around the rider, and it does extend above the rider's head.

1. The RPS must be a continous loop around the rider

2. The RPS must provide rigid structure for seat belt mounting

3. The RPS must satisfy the top and side loading conditions.

4. The RPS must extend above the rider's head (with helmet)

Link for the Image of Halo structure:    https://postimg.cc/Vr5bjP8k

Or does it have to be modified to be something like this ??

Link for the Image of modified Halo structure:   https://postimg.cc/HVmkm1h8

Best, Saam A

On Sunday 10 March 2024 at 21:56:58 UTC-4 Ankur Singh wrote:

[Ankur Singh]

Hi Saam,

The 4 points mentioned in my previos reply were the key points and were not the complete list of requirements for the RPS. 

Please refer to the rulebook for complete details.

One additional requirement for the RPS is that during an accident, the RPS must prevent significant body contact with the ground - this might be evaluated during the safety inspection of the vehicle in which teams may be asked to invert the vehicle to check if the rider is safe inside the vehicle.

Again, it is recommended to go through the rulebook to check if the proposed design meets all the criterias or not.

It would be difficult to answer a simple yes/no only based on the image provided (because there are other factors at play like how the harness would be attached, would the harness properly fasten down the rider, will the rider be safe if the vehicle is upside down etc)

But assuming if the design fulfills all requirements mentioned in the rulebook, the Halo structure would be considered as a valid RPS design.

Ankur Singh

Chair eHPVC