A quick overview of the Zero-Point Inline Fairings mod for KSP. This is a stock-alike mod, not using any mod code, but rather just adding parts that use the stock engine-fairing ejection module.
To use, download and install into your GameData folder. Start with building your internal payload, and then choose a fairing base to install at the bottom of it. Then, attach more parts, or a nose-cone, at the "floating node" above the fairing, and your panels will appear automatically.
For more information, or to download, visit the 0P Inline Fairings page at Kerbal Stuff:
https://kerbalstuff.com/mod/196/Zero%20Point%20Inline%20Fairings