India marked a milestone in its private space sector on Saturday as Vikram-1, the country's first private orbital-class rocket, lifted off carrying multiple technology demonstration payloads and a postcard from Prime Minister Narendra Modi.

Named "Mission Aagaman" (arrival), the test flight's launch marks a historic milestone for the country's commercial space sector, executed by Hyderabad-based Skyroot Aerospace.

On a cloudy day, the seven-storey-tall, four-stage Vikram-1 rocket lifted off at 12.05 pm on Saturday from the first launch pad at the Satish Dhawan Space Centre, Sriharikota.

Following a "planned hold," due to apparent navigation issues, the launch was revised 35 minutes late than the original prefixed time of 11.30 am.

After its initial journey of a little short of 16 minutes, Vikram-1 is expected to place the payloads, both domestic and foreign, into a Low Earth Orbit (LEO) at an altitude of 450 km with an inclination of 60 degrees.

Vikram-1, named after the legendary Vikram Sarabhai who is often regarded as the Father of India's space programme, is built with an all-carbon composite structure and powered by in-house developed propulsion systems, including 3D-printed engines and high-thrust solid-fuel rocket boosters.

The rocket is carrying payloads from Grahaa Space, Cosmoserve, DCubed, and Skyroot's own SCOPE, along with an artwork titled 'Cosmic Bloom'.

The successful Vikram-1 launch will take Skyroot closer to its goal of offering what it calls a "cab service to space", where companies can hire a rocket "to ride to a unique location in the orbit to place a satellite or visit a space station," the report noted.

(With inputs from PTI)