CHETAK

With advances in technology, nano-satellites are becoming more and more capable. Bellatrix offers a simple and reliable dedicated nano-satellite launch vehicle with an aim to make nano-satellite launches more affordable than ever before. Chetak is a two stage vehicle, where the first stage is designed for reuse. Both the stages of Chetak will use liquid methane as fuel. Chetak features an all-carbon composite construction.

Payload

150kg to 700km Sun Synchronous Orbit

Designed to take multiple satellites to their dedicated orbits
Simple to integrate the payload

Payload Fairing Height 3m
Payload Fairing Diameter 2m

First Stage

The first stage of Chetak will use a four Aeon engines each capable of generating 41kN of thrust, giving a total thrust of 164kN. This stage is designed for multiple restart capability. The Aeon engine will feature turbo-pumps driven by Brushless DC motors power by advanced batteries. This will eliminate the need for complex turbo-machinery and plumbing.

Second Stage

The second stage of Chetak will use a single Aeon engine. This stage is optimized for vacuum operation at a down rated 21kN thrust. Tis stage is also designed for multiple restart capability.

Chetak

Payload

150kg

to 700km sso

Mass

12,000kg

Height

19m

Diameter

1.4m

First Stage

164kN

sea level thrust

Second Stage

21kN

vacuum thrust

Payload Fairing

3m

Height

Payload Fairing

2m

Diameter

Price

2m

USD

Fuel

Chetak is designed to launch payloads in sun synchronous orbits and inclined orbits. It is designed to be capable of launching multiple satellites in the same launch mission and placing satellites in equatorial, inclined as well as polar orbits. Bellatrix promises minimum wait periods of less than 1 month on Chetak.

Capabilities

Both the stages of Chetak will use Liquid Methane and Liquid Oxygen as its propellants. These are clean burning fuels. Clean burning do not produce carbon compounds (coking), making it easier for reuse. This propellant combination also provides high specific impulse. Many rocket engines employ helium pressurization system is extremely complex and carries certain risk. Chetak's engines are autogenously pressurized, thus simplifying the design and eliminating the risk of explosion.

Avionics

The avionics are responsible for control and monitoring of the engines, launch sequencing, trajectory planning, guidance, navigation and control from the beginning of the countdown all the way to orbit. To shrink our development time and costs, we use distributed computing architecture with a focus on common hardware and modularity across each rocket stage and function. To make the avionics systems fail proof, we employ triple redundant systems.