3.1 Speed Measuring Device (SMD)
3.1.1 The SMD must record real-time three-dimensional (3D) data with a resolution of at least 5Hz and a position accuracy (SEP) of less than 10 meters.
3.1.2 The SMD must be capable of gathering data or transmitting real-time data to a ground station or stations, which allows the competitor’s vertical freefall speed between 4115m and 1700m above ground to be displayed to a resolution of one hundredth of a kilometer per hour, and the competitors exit altitude to be determined to an accuracy of 10m. The SMD must also be capable of recording the exit altitude.
3.1.3 The data from an SMD may or may not be required to be downloaded to a computer in order to determine the competitor’s speed.
3.1.4 The device must not require any action by the competitor in order for it to function, and it must activate its recording function automatically upon exit of the competitor.
3.1.5 If settings on the device can be altered after the device has been attached to the competitor, it must be evident to the judges that this has occurred, any alteration must be easily reversed and must not affect the device’s data gathering or previous data gathered. Alternatively, it must be impossible for the competitor to alter the device settings once the device is attached.
3.1.6 If the device measures altitude from pressure readings, then the altitude is not to be compensated for ambient temperature, and temperature according to International Standard Atmosphere is to be used.
3.1.7 If the analysis software can compensate for ambient temperature, that facility is not to be used, and temperature according to International Standard Atmosphere is to be used.
3.1.8 If the SMD transmits its data to the ground station during the jump, then that data must be recorded and saved when it is received.
3.1.9 If the data from the SMD is downloaded for analysis to a computer after landing, then that data must be recorded and saved when it is downloaded.
3.1.10 If the speed result is to be read directly from the SMD after landing, then the result needs to be retained on the SMD for the duration of the competition and recorded on the score sheets.
3.2.1 Competitors shall not use propulsion systems. If any propulsion system is used, the score will be zero for that jump.
3.2.2 Parachutes and equipment will be inspected by the Chief Judge or Meet Director to confirm that they conform to normal weights for that equipment. Chief Judge and Meet Director may delegate this task to a qualified person, such as a Rigger, Senior Rigger or Master Rigger. If, in the opinion of the Chief Judge and Meet Director, the equipment does not conform to normal weights for that equipment, the competitor may be required to demonstrate that the equipment does not contain extra weight. This decision is not grounds for protest.
188.8.131.52 The use of parachute equipment (e.g., a tandem rig or student equipment) to add weight as described in 3.2.2 is not permitted, as determined by the Chief Judge or Meet Director. This decision shall not be grounds for protest.
3.2.3 Parachutes and equipment will be inspected by the Chief Judge, Meet Director or USPA Controller to confirm that they are safe for the event. Chief Judge, Meet Director or USPA Controller may delegate this task to a qualified person, such as a Rigger, Senior Rigger or Master Rigger. If, in the opinion of the Chief Judge, Meet Director and USPA Controller, the parachute and/or equipment are not safe for the event, the competitor will not be permitted to use it. Inspections that do not interfere with a competitor’s performance may be made at any time during the competition, as determined by the Chief Judge. If any equipment does not meet the requirements as determined by the Chief Judge, Meet Director or USPA Controller, this equipment will be deemed to be unusable for the competition. This decision is not grounds for protest.
3.2.4 Competitors shall not carry additional or removable weight on their body or equipment. They must be weighed by the USPA Controller, or a person appointed by the USPA Controller for the purpose, at the start of the competition wearing all their normal jump equipment to establish a baseline weight. The USPA Controller, or a person appointed by the USPA Controller for the purpose, must conduct subsequent random weight checks, which may fluctuate from the baseline weight by no more than +/- 2kg before requiring an inspection. If the addition or removal of weight is detected, the score for that jump will be zero. This decision shall not be grounds for protest.
3.2.5 If a competitor changes his equipment during competition, the new equipment must be inspected by the Chief Judge, Meet Director or USPA Controller, or a person appointed by the appropriate official for the purpose, according to 3.2.2, 3.2.3, and 3.2.3 before the competitor is allowed to jump with the new equipment.
3.2.6 Each competitor shall wear one SMD provided by the Host and issued by a Judge. The device will be attached on the jumper’s equipment with the antenna having a clear view of the sky, located and positioned to the satisfaction of the Judge. This decision shall not be grounds for a protest.
3.2.7 A competitor shall not wear any other electronic device or wires closer than 2.54cm from the official SMD as measured by the judging staff. However, a second identical SMD unit may be worn without regard to this separation requirement. If any such electronic device affects the SMD system, and the source of the interference is not obvious and beyond the reasonable control of the jumper, a rejump may be granted by the Chief Judge.
3.2.8 Each competitor must wear a functioning audio altitude warning device on every jump. Failure to do so will result in a score of zero for that jump. Two suitable audible altitude warning devices, with visual indications in the goggles/visor, are recommended.
3.2.9 The SMD will be attached in its location by a Judge.
3.2.10 The SMD will be turned on and off by a Judge or by the competitor if instructed to do so by any Judge. The judge will verify that the
SMD is on and receiving satellite signal.
The SMD will be turned off by a Judge or by the competitor if instructed to do so by any Judge.
3.2.12 Immediately after landing, the competitor shall return the SMD used on that jump to a Judge.
3.2.13 If the SMD is found to have been tampered with, and if in the opinion of the Panel of Judges, this was not caused by circumstances beyond the control of the competitor, then no rejump will be awarded, and the competitor will receive a score of zero for that jump. This decision shall not be grounds for a protest.
3.2.14 If the SMD malfunctions and, in the opinion of the Panel of Judges, the malfunction was not caused by action or interference by the competitor, then the competitor will be given the option of making a rejump or receiving a score of zero for that jump.