Originally Posted by
hoss183
Not the case, you gain positive vertical acceleration you need more lift than cruise. Also its a not clean profile with more power.
hoss, not sure what the second sentence means but IMHO Capn Bloggs is correct with regard to the first bit.
You are (first approximation) only actually accelerating upwards until you achieve a constant rate of climb (ROC) or as Capn Bloggs describes it, during the pitch up itself (doesn’t matter whether it is a pitch up at takeoff or a pitch up to initiate a cruise climb). Once you’ve established in a steady climb you are
climbing upwards but you are not
accelerating upwards, and we are back to the possibility/probability of the required “wing lift” being less in the climb than in level flight due to the vertical component of thrust.