I appreciated the science that went into Delta-V but I just couldn't enjoy the book itself. Random things happening that provide continual doses of danger and

I appreciated the science that went into Delta-V but I just couldn't enjoy the book itself. Random things happening that provide continual doses of danger and excitement I can deal with. But main characters making engineering decisions that seem designed to provide that less so. And secondary characters whose only motivation I could figure out was to keep up that same danger and excitement just ended up making the book unenjoyable for me.