And will either go for:
- Zoom climb or at least steep climb where it trades most of its speed for altitude, which can leave it vulnerable if sufficient separation was achieved during the shallow climb (ergo: if the slow plane does not realize what’s happening until too late). Low speed is not just a vulnerability for running away, but also maneuverability
- If they do react in time and go for a steep climb and break off before falling for the trap… well, they’re no longer pressuring you in the faster plane allowing you to do whatever you like.
And there’s also a third thing RXDimA didn’t mention:
Some planes turn better slow and get pretty stiff while fast, while planes that are normally expected to be boats become quite nimble provided they have speed.
I’ve had a quite handy demonstration of this in a P-51-D-5 (maneuvers nicely at 450-550 IAS) vs Bf109K4 (gets stiff above 450 IAS).
Combat between the 2 planes, broken down:
- P-51D-5 with 480 km/h IAS @ 4.4km altitude engages Bf109K4
- P-51D-5 sacrifices a lot of speed in a loop to gain controlling position of Bf109K4 (slows down to 370 IAS but altitude is increase to 4.8 km)
- Bf109K4 sacrifices a lot of speed sharply turning into the P-51D-5
- P-51D-5 sacrifices altitude to maintain speed to keep position over Bf109K4 (370 IAS, 3.7 km altitude)
- Bf109K4 pulls out all stops and manages to almost pivot in place.
- P-51D-5 does not keep turning, instead shallow dives away to gain separation & speed 430 km/h at 3.6 km and then merges again.
- In the head-on that ensues neither gets a hit in.
- P-51D-5 disengages again. After some separation, climbs some while turning around (330 km/h, 4km altitude)
- Notices Bf109K4 start steep/zoom climbing, so P-51D-5 dives to gain speed (450 km/h, 3.7 km altitude)
- P-51D-5 gains position on the Bf109K4 who starts diving away to escape
- Spiralling descent ensues where P-51D-5 maintains 500 km/h speed in a relaxed lag pursuit.
- Bf109K4 tries to pull out of the dive, P-51D-5 follows.
- Both of them stall on top of each other and P-51D-5 maintains position.
- They dive down to 1km altitude and turn at 550 km/h.
- Bf109K4 cannot out turn the P-51D-5 due to flying much faster than control stiffening permits while the P-51D-5 remains perfectly controllable.
- Bf109K4 goes down to P-51D-5 at 900 meter altitude with a final speed of 406 km/h
All speeds given in IAS.
The fight:
https://youtu.be/OxQ-yBmCxyc?si=v_QAJnos7w6VoXBB&t=202
Second fight I lost. My mistake? Didn’t dive away when I lost contact and got slow and greedy thinking that if I climbed over the clouds I could ambush him and then when he showed up, rather than dive to regain speed I climbed which sealed my fate - I served myself on a silver platter flying at 350 km/h IAS. Might have been saveable, but right wing damage made flying it too hard