These are the ideas of what we want to get from a Balloon Launch. At this point no timescale or level of importance has been placed on items in the list.

Mat’s list dated 24/4/2024 Version 1¶

** GPS Modual to record Long/Lat and ASL. Also it will provide track and speed if required
** Digital Temp Sensor
** CPU of some type to process the data flow from GPS etc and and control the TX time and maybe format data
** TX on VHF if we are using APRS Tracking or 440MHz if on ISM.
** Digital voice syth for transmission of Lat/Lon/Height and any other telemetery we send

Some type of impact detector, so that the CPU knows when it hits the ground/tree ect so
it can switch to a "Help me" mode and report where it is - Maybe a device that can be remote accessed to start an internal beeper/light to help locate?

While in assent the system should transmit say every 30 seconds until it is in stable flight or 10 mins after launch, then switch to 5 min bursts to save power
This Burst should be APRS and the synth voice transmission This should be 144.800MHz for APRS and say 145.475MHz for speech.
A sub system that puts the system to sleep between transmissions. Keeping GPS alive to ensure possitional data can be read. Maybe the 1pps can be used to run a ripple counter or somethign.
Depends on CPU. This would save power and reduce battery weight.

3.3V should be used. again reduce power use.

Battery may have some type of heating if needed, or a good set of Batteries.
Possible TX a CW Carrier a bit like sputnik ?

Version 0 not subsumed into version 1:- While in flight, the data shoud be an APRS burst, and maybe synth voice transmission of Lat/Long location, every 5 mins when over a set hight.

Mike’s list 16/2/2024¶

Here's the list for a payload from this evening:

GPS
Radio
Storage for Logging
Batteries
Insulated Enclosure
Antenna
Camera ?

A few thoughts that went along side that list:
Does storage have to be onboard - or do we get regular enough updates via radio

How easy is it for other groups to track it (radio modulations)

Not all GPS modules are created equal (some may not be suitable for HAB....)

Mike M1ARI

EOF

Dave BYN’s list dated 24/3/2024¶

Hi all. A few things I would like to consider..

Live tv stream. This would not be digital, a discussion I had with our TV expert, Shaun.
Another thing for the future is a guided recovery. I know I said to come into different legislation, if we need permission, so be it ,we obtain it.

Just my thoughts for the future 73

Dave RKE’s list¶

Payload:-

Usual weather balloon data collection:-

External:-

Barometric pressure
Temperature
Wind speed and direction
Altitude

Other:-

Internal temp, pressure

GPS latitude, longitude
Amateur Radio Project tracking beacon with suitable identification

Aviation identifier (eg tracking identifier, SQUARK, Flight Radar identification), external strobe nav. light

Real time images- stills: up towards Balloon, down to ground, all round 360 degree horizontal. Embedded basic data eg lat, lon, altitude, internal and external temp, internal and external pressure

Real time video – at least ONE direction (my choice is downwards looking).

Payload recoverable having location beacon and flashing light

Balloon:-

Capable of reaching above the Armstrong layer (60,000 ft) aim for at least 100,000 ft
Controlled descent eg descent rate, ability to avoid z axis spinning
Latex structure with over pressure venting into supplementary uninflated (at time of initial launch) balloon(s)
High visibility both to radar and visually
Ground proximity audible warning eg for pedestrians.

Maybe innovate a sideways movement system for obstacle avoidance

Other:-

Progressive development aiming at parallel development of balloon launch vehicle and what payload consists of. Initial goal of a very simple initial launch to the ‘ultimate’ !!!!