Cessna 177

Le Cessna Cardinal vu par Wikipedia.en

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The Cessna 177 Cardinal is a light, high-wing [Vous devez être inscrit et connecté pour voir ce lien] that was intended to replace Cessna's [Vous devez être inscrit et connecté pour voir ce lien]. First announced in [Vous devez être inscrit et connecté pour voir ce lien], it was produced from 1968 to 1978.

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Development

The Cessna 177 was designed in the mid-1960s when the engineers at Cessna were asked to create a "futuristic 1970s successor to the [Vous devez être inscrit et connecté pour voir ce lien]".

The resulting aircraft featured newer technology such as a [Vous devez être inscrit et connecté pour voir ce lien] wing with a [Vous devez être inscrit et connecté pour voir ce lien].

Cessna 177

The 1968 model 177 was introduced in late 1967 with a 150 hp (112 kW) engine.

One of the design goals of this 172 replacement was to allow the pilot an unobstructed view when making a turn.

In the 172 the pilot sits under the wing and when the wing is lowered to begin a turn that wing blocks the pilot's view of where the turn will lead to.

The engineers resolved this problem by placing the pilot forward of the wing's leading edge, but that led to a too-far-forward center of gravity.

This problem was partially counteracted by the decision to use the significantly lighter [Vous devez être inscrit et connecté pour voir ce lien] four-cylinder engine in place of the six-cylinder O-300 Continental used on the 172.

The forward CG situation still existed even with the lighter engine, so a [Vous devez être inscrit et connecté pour voir ce lien] was chosen, to provide sufficient elevator control authority at low airspeeds.

The 177 design was intended to be a replacement for the 172, which was to be discontinued after introduction of the new aircraft.

The new design was originally to be called the 172J (to follow the 1968 model 172I).

However, as the time came to make the transition, there was considerable resistance to the replacement of the 172 from the company's Marketing Division.

The 1969 172 jumped to the designator 172K—there is no 172J

Performance and Handling Problems

Soon after delivery of the first Cardinals to customers there were reported incidents of pilot-induced oscillation that alarmed Cessna enough that the factory initiated a priority program to eliminate the problem.

Reviewer Joe Christy explains:

We liked that airplane, and found almost nothing to pick at. However, owners soon discovered to their horror that it didn’t fly or land exactly like a strutless Skyhawk, and some heavy-handed Super-Car drivers managed to smash the Cardinal tail into the pavement on landing, knock-off a few nose-wheels, etc. (apparently, this was possible if one closed his eyes, used full back-pressure on the wheel at the flare and then sat rigidly waiting for the crashing noises to subside). Cessna accepted the blame gracefully. That was proper because, after all, they had lulled a generation of Cessna pilots into near-effortless flying with the extremely forgiving 172 series, and it probably wasn’t ethical to suddenly offer, to many of those same customers, a Cessna that didn’t handle exactly like a Cessna. The company therefore picked up the tab for a list of modifications that gentled the Cardinal and returned the smiles to the faces of dealers and customers.

The solution, which was provided to all aircraft already delivered at no cost, was known as Operation "Cardinal Rule" and included a series of 23 inspection, installation, and modification instructions.

This Service Letter, SE68-14, consisted of modifying the stabilator to install slots just behind the leading edge (to delay the onset of stabilator stall) and installing full counterbalance (11 pounds versus the original 7 pounds) on the stabilator to eliminate the PIO problem.

The 177, with its 150 hp (112 kW) powerplant, was considered "underpowered", even though it had more power than the 145 hp (108 kW) Cessna 172.

Cessna 177A

Recognizing that the aircraft was underpowered, Cessna introduced the 177A in 1969.

The revision featured a 180 hp (135 kW) version of the same four-cylinder Lycoming used in the 177, moving the design's price and role somewhere between that of the 172 and [Vous devez être inscrit et connecté pour voir ce lien].

The additional power improved cruise speed by 11 knots (20 km/h).

The 177A also included the fiberglass, downward-shaped, conical wing tips that had been introduced on the 172 of the same year.

Cessna 177B

[Vous devez être inscrit et connecté pour voir ce lien] saw the introduction of the 177B, which had a new wing [Vous devez être inscrit et connecté pour voir ce lien], a [Vous devez être inscrit et connecté pour voir ce lien], and other minor improvements.

The 177B weighed 145 lb (66 kg) more empty than the earlier 177, with maximum takeoff weight increased from
2,350 lb (1,067 kg) to 2,500 lb (1,135 kg).^{[Vous devez être inscrit et connecté pour voir ce lien][Vous devez être inscrit et connecté pour voir ce lien]}

In 1978, Cessna built a deluxe version of the 177B, the Cardinal Classic, with leather upholstery, a table for the rear passengers, and a 28-Volt electrical system.^{[Vous devez être inscrit et connecté pour voir ce lien]}

Cessna 177RG

The final aircraft in the 177 line was the [Vous devez être inscrit et connecté pour voir ce lien] 177RG Cardinal RG, which Cessna began producing in 1971 as a direct competitor to the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien].

To offset the 145 lb (66 kg) increase in empty weight, much of which was from the electrically powered [Vous devez être inscrit et connecté pour voir ce lien] gear mechanism, the 177RG has a 200 hp (149 kW) [Vous devez être inscrit et connecté pour voir ce lien] engine.

This also allowed increase of the maximum weight by 300 lbs.